Merge github.com:grpc/grpc into slice_with_exec_ctx

772 files changed, 1801 insertions, 1139 deletions

diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index 126ea54b69..1ce3a49097 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -33,15 +33,18 @@
 
 #include "test/core/bad_client/bad_client.h"
 
+#include <stdio.h>
+
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
-#include <stdio.h>
+
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/channel/http_server_filter.h"
 #include "src/core/lib/iomgr/endpoint_pair.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/murmur_hash.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/completion_queue.h"
@@ -181,7 +184,7 @@ void grpc_run_bad_client_test(
       grpc_exec_ctx_finish(&exec_ctx);
       GPR_ASSERT(
           gpr_event_wait(&args.read_done, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)));
-      grpc_slice_buffer_destroy_internal(exec_ctx, &args.incoming);
+      grpc_slice_buffer_destroy_internal(&exec_ctx, &args.incoming);
     }
     // Shutdown.
     grpc_endpoint_shutdown(&exec_ctx, sfd.client);
@@ -194,7 +197,7 @@ void grpc_run_bad_client_test(
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(a.server);
   grpc_completion_queue_destroy(a.cq);
-  grpc_slice_buffer_destroy_internal(exec_ctx, &outgoing);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &outgoing);
 
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index 26fc3dc4a8..1e57df9026 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -107,6 +107,7 @@ static void test_create_channel_stack(void) {
       channel_init_func,
       channel_destroy_func,
       get_peer,
+      grpc_channel_next_get_info,
       "some_test_filter"};
   const grpc_channel_filter *filters = &filter;
   grpc_channel_stack *channel_stack;
diff --git a/test/core/client_channel/lb_policies_test.c b/test/core/client_channel/lb_policies_test.c
index 844db5e6cb..198aafb91f 100644
--- a/test/core/client_channel/lb_policies_test.c
+++ b/test/core/client_channel/lb_policies_test.c
@@ -48,7 +48,6 @@
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/server.h"
 #include "test/core/end2end/cq_verifier.h"
-#include "test/core/end2end/fake_resolver.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
@@ -501,7 +500,7 @@ void run_spec(const test_spec *spec) {
   request_data rdata;
   servers_fixture *f;
   grpc_channel_args args;
-  grpc_arg arg;
+  grpc_arg arg_array[2];
   rdata.call_details =
       gpr_malloc(sizeof(grpc_call_details) * spec->num_servers);
   f = setup_servers("127.0.0.1", &rdata, spec->num_servers);
@@ -509,14 +508,16 @@ void run_spec(const test_spec *spec) {
   /* Create client. */
   servers_hostports_str = gpr_strjoin_sep((const char **)f->servers_hostports,
                                           f->num_servers, ",", NULL);
-  gpr_asprintf(&client_hostport, "test:%s?lb_policy=round_robin",
-               servers_hostports_str);
+  gpr_asprintf(&client_hostport, "ipv4:%s", servers_hostports_str);
 
-  arg.type = GRPC_ARG_INTEGER;
-  arg.key = "grpc.testing.fixed_reconnect_backoff";
-  arg.value.integer = RETRY_TIMEOUT;
-  args.num_args = 1;
-  args.args = &arg;
+  arg_array[0].type = GRPC_ARG_INTEGER;
+  arg_array[0].key = "grpc.testing.fixed_reconnect_backoff";
+  arg_array[0].value.integer = RETRY_TIMEOUT;
+  arg_array[1].type = GRPC_ARG_STRING;
+  arg_array[1].key = GRPC_ARG_LB_POLICY_NAME;
+  arg_array[1].value.string = "round_robin";
+  args.num_args = 2;
+  args.args = arg_array;
 
   client = grpc_insecure_channel_create(client_hostport, &args, NULL);
 
@@ -540,19 +541,21 @@ static grpc_channel *create_client(const servers_fixture *f) {
   grpc_channel *client;
   char *client_hostport;
   char *servers_hostports_str;
-  grpc_arg arg;
+  grpc_arg arg_array[2];
   grpc_channel_args args;
 
   servers_hostports_str = gpr_strjoin_sep((const char **)f->servers_hostports,
                                           f->num_servers, ",", NULL);
-  gpr_asprintf(&client_hostport, "test:%s?lb_policy=round_robin",
-               servers_hostports_str);
+  gpr_asprintf(&client_hostport, "ipv4:%s", servers_hostports_str);
 
-  arg.type = GRPC_ARG_INTEGER;
-  arg.key = "grpc.testing.fixed_reconnect_backoff";
-  arg.value.integer = RETRY_TIMEOUT;
-  args.num_args = 1;
-  args.args = &arg;
+  arg_array[0].type = GRPC_ARG_INTEGER;
+  arg_array[0].key = "grpc.testing.fixed_reconnect_backoff";
+  arg_array[0].value.integer = RETRY_TIMEOUT;
+  arg_array[1].type = GRPC_ARG_STRING;
+  arg_array[1].key = GRPC_ARG_LB_POLICY_NAME;
+  arg_array[1].value.string = "round_robin";
+  args.num_args = 2;
+  args.args = arg_array;
 
   client = grpc_insecure_channel_create(client_hostport, &args, NULL);
   gpr_free(client_hostport);
@@ -638,6 +641,26 @@ static void test_pending_calls(size_t concurrent_calls) {
   test_spec_destroy(spec);
 }
 
+static void test_get_channel_info() {
+  grpc_channel *channel = grpc_insecure_channel_create(
+      "test:127.0.0.1:1234?lb_policy=round_robin", NULL, NULL);
+  // Ensures that resolver returns.
+  grpc_channel_check_connectivity_state(channel, true /* try_to_connect */);
+  // Use grpc_channel_get_info() to get LB policy name.
+  char *lb_policy_name = NULL;
+  grpc_channel_info channel_info;
+  channel_info.lb_policy_name = &lb_policy_name;
+  grpc_channel_get_info(channel, &channel_info);
+  GPR_ASSERT(lb_policy_name != NULL);
+  GPR_ASSERT(strcmp(lb_policy_name, "round_robin") == 0);
+  gpr_free(lb_policy_name);
+  // Try again without requesting anything.  This is a no-op.
+  channel_info.lb_policy_name = NULL;
+  grpc_channel_get_info(channel, &channel_info);
+  // Clean up.
+  grpc_channel_destroy(channel);
+}
+
 static void print_failed_expectations(const int *expected_connection_sequence,
                                       const int *actual_connection_sequence,
                                       const size_t expected_seq_length,
@@ -875,7 +898,6 @@ int main(int argc, char **argv) {
   const size_t NUM_SERVERS = 4;
 
   grpc_test_init(argc, argv);
-  grpc_fake_resolver_init();
   grpc_init();
   grpc_tracer_set_enabled("round_robin", 1);
 
@@ -933,6 +955,7 @@ int main(int argc, char **argv) {
 
   test_pending_calls(4);
   test_ping();
+  test_get_channel_info();
 
   grpc_exec_ctx_finish(&exec_ctx);
   grpc_shutdown();
diff --git a/test/core/client_channel/set_initial_connect_string_test.c b/test/core/client_channel/set_initial_connect_string_test.c
index d8eca036ed..b342d613b2 100644
--- a/test/core/client_channel/set_initial_connect_string_test.c
+++ b/test/core/client_channel/set_initial_connect_string_test.c
@@ -116,8 +116,8 @@ static void reset_addr_and_set_magic_string(grpc_resolved_address **addr,
   target.sin_family = AF_INET;
   target.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
   target.sin_port = htons((uint16_t)server_port);
-  (*addr)->len = sizeof(target);
   *addr = (grpc_resolved_address *)gpr_malloc(sizeof(grpc_resolved_address));
+  (*addr)->len = sizeof(target);
   memcpy((*addr)->addr, &target, sizeof(target));
 }
 
diff --git a/test/core/end2end/connection_refused_test.c b/test/core/end2end/connection_refused_test.c
index 07d7010daa..13414c0378 100644
--- a/test/core/end2end/connection_refused_test.c
+++ b/test/core/end2end/connection_refused_test.c
@@ -39,8 +39,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/method_config.h"
+
 #include "test/core/end2end/cq_verifier.h"
-#include "test/core/end2end/fake_resolver.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
@@ -62,7 +65,6 @@ static void run_test(bool wait_for_ready, bool use_service_config) {
   gpr_log(GPR_INFO, "TEST: wait_for_ready=%d use_service_config=%d",
           wait_for_ready, use_service_config);
 
-  grpc_fake_resolver_init();
   grpc_init();
 
   grpc_metadata_array_init(&trailing_metadata_recv);
@@ -70,21 +72,30 @@ static void run_test(bool wait_for_ready, bool use_service_config) {
   cq = grpc_completion_queue_create(NULL);
   cqv = cq_verifier_create(cq);
 
+  /* if using service config, create channel args */
+  grpc_channel_args *args = NULL;
+  if (use_service_config) {
+    GPR_ASSERT(wait_for_ready);
+    grpc_method_config_table_entry entry = {
+        grpc_mdstr_from_string("/service/method"),
+        grpc_method_config_create(&wait_for_ready, NULL, NULL, NULL),
+    };
+    grpc_method_config_table *method_config_table =
+        grpc_method_config_table_create(1, &entry);
+    GRPC_MDSTR_UNREF(entry.method_name);
+    grpc_method_config_unref(entry.method_config);
+    grpc_arg arg =
+        grpc_method_config_table_create_channel_arg(method_config_table);
+    args = grpc_channel_args_copy_and_add(args, &arg, 1);
+    grpc_method_config_table_unref(method_config_table);
+  }
+
   /* create a call, channel to a port which will refuse connection */
   int port = grpc_pick_unused_port_or_die();
   char *addr;
   gpr_join_host_port(&addr, "127.0.0.1", port);
-  if (use_service_config) {
-    GPR_ASSERT(wait_for_ready);
-    char *server_uri;
-    gpr_asprintf(&server_uri,
-                 "test:%s?method_name=/service/method&wait_for_ready=1", addr);
-    gpr_free(addr);
-    addr = server_uri;
-  }
   gpr_log(GPR_INFO, "server: %s", addr);
-
-  chan = grpc_insecure_channel_create(addr, NULL, NULL);
+  chan = grpc_insecure_channel_create(addr, args, NULL);
   call = grpc_channel_create_call(chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
                                   "/service/method", "nonexistant", deadline,
                                   NULL);
@@ -133,6 +144,8 @@ static void run_test(bool wait_for_ready, bool use_service_config) {
   gpr_free(details);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
 
+  if (args != NULL) grpc_channel_args_destroy(args);
+
   grpc_shutdown();
 }
 
diff --git a/test/core/end2end/end2end_test_utils.c b/test/core/end2end/end2end_test_utils.c
new file mode 100644
index 0000000000..46fb4ec1af
--- /dev/null
+++ b/test/core/end2end/end2end_test_utils.c
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <string.h>
+
+#include <grpc/support/log.h>
+
+const char *get_host_override_string(const char *str,
+                                     grpc_end2end_test_config config) {
+  return (config.feature_mask & FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER ? str
+                                                                       : NULL);
+}
+
+void validate_host_override_string(const char *pattern, const char *str,
+                                   grpc_end2end_test_config config) {
+  if (config.feature_mask & FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER) {
+    GPR_ASSERT(0 == strcmp(str, pattern));
+  }
+}
diff --git a/test/core/end2end/end2end_tests.h b/test/core/end2end/end2end_tests.h
index e20273de90..f25e90b5f6 100644
--- a/test/core/end2end/end2end_tests.h
+++ b/test/core/end2end/end2end_tests.h
@@ -43,7 +43,8 @@ typedef struct grpc_end2end_test_config grpc_end2end_test_config;
 #define FEATURE_MASK_SUPPORTS_HOSTNAME_VERIFICATION 2
 #define FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS 4
 #define FEATURE_MASK_SUPPORTS_REQUEST_PROXYING 8
-#define FEATURE_MASK_SUPPORTS_QUERY_ARGS 16
+#define FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL 16
+#define FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER 32
 
 #define FAIL_AUTH_CHECK_SERVER_ARG_NAME "fail_auth_check"
 
@@ -60,7 +61,7 @@ struct grpc_end2end_test_config {
   grpc_end2end_test_fixture (*create_fixture)(grpc_channel_args *client_args,
                                               grpc_channel_args *server_args);
   void (*init_client)(grpc_end2end_test_fixture *f,
-                      grpc_channel_args *client_args, const char *query_args);
+                      grpc_channel_args *client_args);
   void (*init_server)(grpc_end2end_test_fixture *f,
                       grpc_channel_args *server_args);
   void (*tear_down_data)(grpc_end2end_test_fixture *f);
@@ -69,4 +70,10 @@ struct grpc_end2end_test_config {
 void grpc_end2end_tests_pre_init(void);
 void grpc_end2end_tests(int argc, char **argv, grpc_end2end_test_config config);
 
+const char *get_host_override_string(const char *str,
+                                     grpc_end2end_test_config config);
+
+void validate_host_override_string(const char *pattern, const char *str,
+                                   grpc_end2end_test_config config);
+
 #endif /* GRPC_TEST_CORE_END2END_END2END_TESTS_H */
diff --git a/test/core/end2end/fake_resolver.c b/test/core/end2end/fake_resolver.c
index e6cdaf7bfe..55a42b8fa3 100644
--- a/test/core/end2end/fake_resolver.c
+++ b/test/core/end2end/fake_resolver.c
@@ -48,9 +48,9 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
-#include "src/core/lib/transport/method_config.h"
 
 //
 // fake_resolver
@@ -63,8 +63,6 @@ typedef struct {
   // passed-in parameters
   grpc_channel_args* channel_args;
   grpc_lb_addresses* addresses;
-  char* lb_policy_name;
-  grpc_method_config_table* method_config_table;
 
   // mutex guarding the rest of the state
   gpr_mu mu;
@@ -79,10 +77,8 @@ typedef struct {
 static void fake_resolver_destroy(grpc_exec_ctx* exec_ctx, grpc_resolver* gr) {
   fake_resolver* r = (fake_resolver*)gr;
   gpr_mu_destroy(&r->mu);
-  grpc_channel_args_destroy(r->channel_args);
-  grpc_lb_addresses_destroy(r->addresses);
-  gpr_free(r->lb_policy_name);
-  grpc_method_config_table_unref(r->method_config_table);
+  grpc_channel_args_destroy(exec_ctx, r->channel_args);
+  grpc_lb_addresses_destroy(exec_ctx, r->addresses);
   gpr_free(r);
 }
 
@@ -102,21 +98,9 @@ static void fake_resolver_maybe_finish_next_locked(grpc_exec_ctx* exec_ctx,
                                                    fake_resolver* r) {
   if (r->next_completion != NULL && !r->published) {
     r->published = true;
-    grpc_arg new_args[3];
-    size_t num_args = 0;
-    new_args[num_args++] = grpc_lb_addresses_create_channel_arg(r->addresses);
-    if (r->method_config_table != NULL) {
-      new_args[num_args++] =
-          grpc_method_config_table_create_channel_arg(r->method_config_table);
-    }
-    if (r->lb_policy_name != NULL) {
-      new_args[num_args].type = GRPC_ARG_STRING;
-      new_args[num_args].key = GRPC_ARG_LB_POLICY_NAME;
-      new_args[num_args].value.string = r->lb_policy_name;
-      ++num_args;
-    }
+    grpc_arg arg = grpc_lb_addresses_create_channel_arg(r->addresses);
     *r->target_result =
-        grpc_channel_args_copy_and_add(r->channel_args, new_args, num_args);
+        grpc_channel_args_copy_and_add(r->channel_args, &arg, 1);
     grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
     r->next_completion = NULL;
   }
@@ -157,7 +141,8 @@ static void fake_resolver_factory_unref(grpc_resolver_factory* factory) {}
 
 static void do_nothing(void* ignored) {}
 
-static grpc_resolver* fake_resolver_create(grpc_resolver_factory* factory,
+static grpc_resolver* fake_resolver_create(grpc_exec_ctx* exec_ctx,
+                                           grpc_resolver_factory* factory,
                                            grpc_resolver_args* args) {
   if (0 != strcmp(args->uri->authority, "")) {
     gpr_log(GPR_ERROR, "authority based uri's not supported by the %s scheme",
@@ -192,48 +177,9 @@ static grpc_resolver* fake_resolver_create(grpc_resolver_factory* factory,
   grpc_slice_buffer_destroy_internal(exec_ctx, &path_parts);
   grpc_slice_unref(path_slice);
   if (errors_found) {
-    grpc_lb_addresses_destroy(addresses);
+    grpc_lb_addresses_destroy(exec_ctx, addresses);
     return NULL;
   }
-  // Construct method config table.
-  // We only support parameters for a single method.
-  grpc_method_config_table* method_config_table = NULL;
-  const char* method_name = grpc_uri_get_query_arg(args->uri, "method_name");
-  if (method_name != NULL) {
-    const char* wait_for_ready_str =
-        grpc_uri_get_query_arg(args->uri, "wait_for_ready");
-    // Anything other than "0" is interpreted as true.
-    bool wait_for_ready =
-        wait_for_ready_str != NULL && strcmp("0", wait_for_ready_str) != 0;
-    const char* timeout_str =
-        grpc_uri_get_query_arg(args->uri, "timeout_seconds");
-    gpr_timespec timeout = {timeout_str == NULL ? 0 : atoi(timeout_str), 0,
-                            GPR_TIMESPAN};
-    const char* max_request_message_bytes_str =
-        grpc_uri_get_query_arg(args->uri, "max_request_message_bytes");
-    int32_t max_request_message_bytes =
-        max_request_message_bytes_str == NULL
-            ? 0
-            : atoi(max_request_message_bytes_str);
-    const char* max_response_message_bytes_str =
-        grpc_uri_get_query_arg(args->uri, "max_response_message_bytes");
-    int32_t max_response_message_bytes =
-        max_response_message_bytes_str == NULL
-            ? 0
-            : atoi(max_response_message_bytes_str);
-    grpc_method_config* method_config = grpc_method_config_create(
-        wait_for_ready_str == NULL ? NULL : &wait_for_ready,
-        timeout_str == NULL ? NULL : &timeout,
-        max_request_message_bytes_str == NULL ? NULL
-                                              : &max_request_message_bytes,
-        max_response_message_bytes_str == NULL ? NULL
-                                               : &max_response_message_bytes);
-    grpc_method_config_table_entry entry = {grpc_mdstr_from_string(method_name),
-                                            method_config};
-    method_config_table = grpc_method_config_table_create(1, &entry);
-    GRPC_MDSTR_UNREF(entry.method_name);
-    grpc_method_config_unref(method_config);
-  }
   // Instantiate resolver.
   fake_resolver* r = gpr_malloc(sizeof(fake_resolver));
   memset(r, 0, sizeof(*r));
@@ -244,9 +190,6 @@ static grpc_resolver* fake_resolver_create(grpc_resolver_factory* factory,
   r->channel_args =
       grpc_channel_args_copy_and_add(args->args, &server_name_arg, 1);
   r->addresses = addresses;
-  r->lb_policy_name =
-      gpr_strdup(grpc_uri_get_query_arg(args->uri, "lb_policy"));
-  r->method_config_table = method_config_table;
   gpr_mu_init(&r->mu);
   grpc_resolver_init(&r->base, &fake_resolver_vtable);
   return &r->base;
diff --git a/test/core/end2end/fixtures/h2_census.c b/test/core/end2end/fixtures/h2_census.c
index c2e1acf57f..c52d7660f5 100644
--- a/test/core/end2end/fixtures/h2_census.c
+++ b/test/core/end2end/fixtures/h2_census.c
@@ -79,9 +79,7 @@ static grpc_arg make_census_enable_arg(void) {
 }
 
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                  grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
   grpc_arg arg = make_census_enable_arg();
   client_args = grpc_channel_args_copy_and_add(client_args, &arg, 1);
@@ -113,7 +111,9 @@ void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack+census", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fullstack+census", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+                                    FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                                    FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
      chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
 };
diff --git a/test/core/end2end/fixtures/h2_compress.c b/test/core/end2end/fixtures/h2_compress.c
index 94a198f380..fedd2ebc46 100644
--- a/test/core/end2end/fixtures/h2_compress.c
+++ b/test/core/end2end/fixtures/h2_compress.c
@@ -75,9 +75,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack_compression(
 }
 
 void chttp2_init_client_fullstack_compression(grpc_end2end_test_fixture *f,
-                                              grpc_channel_args *client_args,
-                                              const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                              grpc_channel_args *client_args) {
   fullstack_compression_fixture_data *ffd = f->fixture_data;
   if (ffd->client_args_compression != NULL) {
     grpc_channel_args_destroy(ffd->client_args_compression);
@@ -115,7 +113,9 @@ void chttp2_tear_down_fullstack_compression(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack_compression", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fullstack_compression", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+                                         FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                                         FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack_compression,
      chttp2_init_client_fullstack_compression,
      chttp2_init_server_fullstack_compression,
diff --git a/test/core/end2end/fixtures/h2_fake_resolver.c b/test/core/end2end/fixtures/h2_fake_resolver.c
deleted file mode 100644
index 429f3c95f9..0000000000
--- a/test/core/end2end/fixtures/h2_fake_resolver.c
+++ /dev/null
@@ -1,128 +0,0 @@
-//
-// Copyright 2016, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-
-#include "test/core/end2end/end2end_tests.h"
-
-#include <string.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/host_port.h>
-#include <grpc/support/log.h>
-#include <grpc/support/string_util.h>
-#include <grpc/support/sync.h>
-#include <grpc/support/thd.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/ext/client_channel/client_channel.h"
-#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
-#include "src/core/lib/channel/connected_channel.h"
-#include "src/core/lib/channel/http_server_filter.h"
-#include "src/core/lib/surface/channel.h"
-#include "src/core/lib/surface/server.h"
-#include "test/core/end2end/fake_resolver.h"
-#include "test/core/util/port.h"
-#include "test/core/util/test_config.h"
-
-typedef struct fullstack_fixture_data {
-  char *localaddr;
-} fullstack_fixture_data;
-
-static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
-    grpc_channel_args *client_args, grpc_channel_args *server_args) {
-  grpc_end2end_test_fixture f;
-  int port = grpc_pick_unused_port_or_die();
-  fullstack_fixture_data *ffd = gpr_malloc(sizeof(fullstack_fixture_data));
-  memset(&f, 0, sizeof(f));
-
-  gpr_join_host_port(&ffd->localaddr, "127.0.0.1", port);
-
-  f.fixture_data = ffd;
-  f.cq = grpc_completion_queue_create(NULL);
-
-  return f;
-}
-
-void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  fullstack_fixture_data *ffd = f->fixture_data;
-  char *server_uri;
-  gpr_asprintf(&server_uri, "test:%s%s%s", ffd->localaddr,
-               (query_args == NULL ? "" : "?"),
-               (query_args == NULL ? "" : query_args));
-  gpr_log(GPR_INFO, "server_uri: %s", server_uri);
-  f->client = grpc_insecure_channel_create(server_uri, client_args, NULL);
-  GPR_ASSERT(f->client);
-  gpr_free(server_uri);
-}
-
-void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *server_args) {
-  fullstack_fixture_data *ffd = f->fixture_data;
-  if (f->server) {
-    grpc_server_destroy(f->server);
-  }
-  f->server = grpc_server_create(server_args, NULL);
-  grpc_server_register_completion_queue(f->server, f->cq, NULL);
-  GPR_ASSERT(grpc_server_add_insecure_http2_port(f->server, ffd->localaddr));
-  grpc_server_start(f->server);
-}
-
-void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
-  fullstack_fixture_data *ffd = f->fixture_data;
-  gpr_free(ffd->localaddr);
-  gpr_free(ffd);
-}
-
-/* All test configurations */
-static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
-                             FEATURE_MASK_SUPPORTS_QUERY_ARGS,
-     chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
-     chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
-};
-
-int main(int argc, char **argv) {
-  size_t i;
-
-  grpc_test_init(argc, argv);
-  grpc_end2end_tests_pre_init();
-  grpc_fake_resolver_init();
-  grpc_init();
-
-  for (i = 0; i < sizeof(configs) / sizeof(*configs); i++) {
-    grpc_end2end_tests(argc, argv, configs[i]);
-  }
-
-  grpc_shutdown();
-
-  return 0;
-}
diff --git a/test/core/end2end/fixtures/h2_fakesec.c b/test/core/end2end/fixtures/h2_fakesec.c
index dbe9011dcf..c9747913c2 100644
--- a/test/core/end2end/fixtures/h2_fakesec.c
+++ b/test/core/end2end/fixtures/h2_fakesec.c
@@ -105,9 +105,7 @@ void chttp2_tear_down_secure_fullstack(grpc_end2end_test_fixture *f) {
 }
 
 static void chttp2_init_client_fake_secure_fullstack(
-    grpc_end2end_test_fixture *f, grpc_channel_args *client_args,
-    const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+    grpc_end2end_test_fixture *f, grpc_channel_args *client_args) {
   grpc_channel_credentials *fake_ts_creds =
       grpc_fake_transport_security_credentials_create();
   chttp2_init_client_secure_fullstack(f, client_args, fake_ts_creds);
@@ -142,7 +140,9 @@ static void chttp2_init_server_fake_secure_fullstack(
 static grpc_end2end_test_config configs[] = {
     {"chttp2/fake_secure_fullstack",
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
-         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS |
+         FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+         FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_secure_fullstack,
      chttp2_init_client_fake_secure_fullstack,
      chttp2_init_server_fake_secure_fullstack,
diff --git a/test/core/end2end/fixtures/h2_fd.c b/test/core/end2end/fixtures/h2_fd.c
index 2dfa54fb6b..223fadc386 100644
--- a/test/core/end2end/fixtures/h2_fd.c
+++ b/test/core/end2end/fixtures/h2_fd.c
@@ -78,10 +78,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
 }
 
 static void chttp2_init_client_socketpair(grpc_end2end_test_fixture *f,
-                                          grpc_channel_args *client_args,
-                                          const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
-
+                                          grpc_channel_args *client_args) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   sp_fixture_data *sfd = f->fixture_data;
 
@@ -114,9 +111,9 @@ static void chttp2_tear_down_socketpair(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fd", 0, chttp2_create_fixture_socketpair,
-     chttp2_init_client_socketpair, chttp2_init_server_socketpair,
-     chttp2_tear_down_socketpair},
+    {"chttp2/fd", FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
+     chttp2_create_fixture_socketpair, chttp2_init_client_socketpair,
+     chttp2_init_server_socketpair, chttp2_tear_down_socketpair},
 };
 
 int main(int argc, char **argv) {
diff --git a/test/core/end2end/fixtures/h2_full+pipe.c b/test/core/end2end/fixtures/h2_full+pipe.c
index e0026a7940..c6013f3040 100644
--- a/test/core/end2end/fixtures/h2_full+pipe.c
+++ b/test/core/end2end/fixtures/h2_full+pipe.c
@@ -76,9 +76,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 }
 
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                  grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
   f->client = grpc_insecure_channel_create(ffd->localaddr, client_args, NULL);
   GPR_ASSERT(f->client);
@@ -104,7 +102,9 @@ void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+                             FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                             FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
      chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
 };
diff --git a/test/core/end2end/fixtures/h2_full+trace.c b/test/core/end2end/fixtures/h2_full+trace.c
index eadc62d963..11a102a576 100644
--- a/test/core/end2end/fixtures/h2_full+trace.c
+++ b/test/core/end2end/fixtures/h2_full+trace.c
@@ -76,9 +76,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 }
 
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                  grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
   f->client = grpc_insecure_channel_create(ffd->localaddr, client_args, NULL);
   GPR_ASSERT(f->client);
@@ -104,7 +102,9 @@ void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+                             FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                             FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
      chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
 };
diff --git a/test/core/end2end/fixtures/h2_full.c b/test/core/end2end/fixtures/h2_full.c
index 182ce23a51..3399f1981e 100644
--- a/test/core/end2end/fixtures/h2_full.c
+++ b/test/core/end2end/fixtures/h2_full.c
@@ -70,9 +70,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 }
 
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                  grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
   f->client = grpc_insecure_channel_create(ffd->localaddr, client_args, NULL);
   GPR_ASSERT(f->client);
@@ -98,7 +96,9 @@ void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+                             FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                             FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
      chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
 };
diff --git a/test/core/end2end/fixtures/h2_http_proxy.c b/test/core/end2end/fixtures/h2_http_proxy.c
index 2acc06f549..44b223664a 100644
--- a/test/core/end2end/fixtures/h2_http_proxy.c
+++ b/test/core/end2end/fixtures/h2_http_proxy.c
@@ -75,9 +75,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 }
 
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                  grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
   char *proxy_uri;
   gpr_asprintf(&proxy_uri, "http://%s",
@@ -109,7 +107,9 @@ void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+                             FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                             FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
      chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
 };
diff --git a/test/core/end2end/fixtures/h2_load_reporting.c b/test/core/end2end/fixtures/h2_load_reporting.c
index 0957666a44..7a76489b44 100644
--- a/test/core/end2end/fixtures/h2_load_reporting.c
+++ b/test/core/end2end/fixtures/h2_load_reporting.c
@@ -73,9 +73,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_load_reporting(
 }
 
 void chttp2_init_client_load_reporting(grpc_end2end_test_fixture *f,
-                                       grpc_channel_args *client_args,
-                                       const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                       grpc_channel_args *client_args) {
   load_reporting_fixture_data *ffd = f->fixture_data;
   f->client = grpc_insecure_channel_create(ffd->localaddr, client_args, NULL);
   GPR_ASSERT(f->client);
@@ -105,7 +103,9 @@ void chttp2_tear_down_load_reporting(grpc_end2end_test_fixture *f) {
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
     {"chttp2/fullstack+load_reporting",
-     FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+     FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+         FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+         FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_load_reporting, chttp2_init_client_load_reporting,
      chttp2_init_server_load_reporting, chttp2_tear_down_load_reporting},
 };
diff --git a/test/core/end2end/fixtures/h2_oauth2.c b/test/core/end2end/fixtures/h2_oauth2.c
index dd636cfff6..6122f4f2f9 100644
--- a/test/core/end2end/fixtures/h2_oauth2.c
+++ b/test/core/end2end/fixtures/h2_oauth2.c
@@ -150,9 +150,7 @@ void chttp2_tear_down_secure_fullstack(grpc_end2end_test_fixture *f) {
 }
 
 static void chttp2_init_client_simple_ssl_with_oauth2_secure_fullstack(
-    grpc_end2end_test_fixture *f, grpc_channel_args *client_args,
-    const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+    grpc_end2end_test_fixture *f, grpc_channel_args *client_args) {
   grpc_channel_credentials *ssl_creds =
       grpc_ssl_credentials_create(test_root_cert, NULL, NULL);
   grpc_call_credentials *oauth2_creds =
@@ -218,7 +216,9 @@ static void chttp2_init_server_simple_ssl_secure_fullstack(
 static grpc_end2end_test_config configs[] = {
     {"chttp2/simple_ssl_with_oauth2_fullstack",
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
-         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS |
+         FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+         FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_secure_fullstack,
      chttp2_init_client_simple_ssl_with_oauth2_secure_fullstack,
      chttp2_init_server_simple_ssl_secure_fullstack,
diff --git a/test/core/end2end/fixtures/h2_proxy.c b/test/core/end2end/fixtures/h2_proxy.c
index 2671e0abde..9e37ed4db3 100644
--- a/test/core/end2end/fixtures/h2_proxy.c
+++ b/test/core/end2end/fixtures/h2_proxy.c
@@ -85,9 +85,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 }
 
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                  grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
   f->client = grpc_insecure_channel_create(
       grpc_end2end_proxy_get_client_target(ffd->proxy), client_args, NULL);
@@ -116,7 +114,9 @@ void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
     {"chttp2/fullstack+proxy", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
-                                   FEATURE_MASK_SUPPORTS_REQUEST_PROXYING,
+                                   FEATURE_MASK_SUPPORTS_REQUEST_PROXYING |
+                                   FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                                   FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
      chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
 };
diff --git a/test/core/end2end/fixtures/h2_sockpair+trace.c b/test/core/end2end/fixtures/h2_sockpair+trace.c
index a358edf321..726ed8735c 100644
--- a/test/core/end2end/fixtures/h2_sockpair+trace.c
+++ b/test/core/end2end/fixtures/h2_sockpair+trace.c
@@ -104,9 +104,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
 }
 
 static void chttp2_init_client_socketpair(grpc_end2end_test_fixture *f,
-                                          grpc_channel_args *client_args,
-                                          const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                          grpc_channel_args *client_args) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_endpoint_pair *sfd = f->fixture_data;
   grpc_transport *transport;
@@ -143,9 +141,9 @@ static void chttp2_tear_down_socketpair(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/socketpair", 0, chttp2_create_fixture_socketpair,
-     chttp2_init_client_socketpair, chttp2_init_server_socketpair,
-     chttp2_tear_down_socketpair},
+    {"chttp2/socketpair", FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
+     chttp2_create_fixture_socketpair, chttp2_init_client_socketpair,
+     chttp2_init_server_socketpair, chttp2_tear_down_socketpair},
 };
 
 int main(int argc, char **argv) {
diff --git a/test/core/end2end/fixtures/h2_sockpair.c b/test/core/end2end/fixtures/h2_sockpair.c
index 8f7083af59..94b2623b3e 100644
--- a/test/core/end2end/fixtures/h2_sockpair.c
+++ b/test/core/end2end/fixtures/h2_sockpair.c
@@ -98,9 +98,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
 }
 
 static void chttp2_init_client_socketpair(grpc_end2end_test_fixture *f,
-                                          grpc_channel_args *client_args,
-                                          const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                          grpc_channel_args *client_args) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_endpoint_pair *sfd = f->fixture_data;
   grpc_transport *transport;
@@ -137,9 +135,9 @@ static void chttp2_tear_down_socketpair(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/socketpair", 0, chttp2_create_fixture_socketpair,
-     chttp2_init_client_socketpair, chttp2_init_server_socketpair,
-     chttp2_tear_down_socketpair},
+    {"chttp2/socketpair", FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
+     chttp2_create_fixture_socketpair, chttp2_init_client_socketpair,
+     chttp2_init_server_socketpair, chttp2_tear_down_socketpair},
 };
 
 int main(int argc, char **argv) {
diff --git a/test/core/end2end/fixtures/h2_sockpair_1byte.c b/test/core/end2end/fixtures/h2_sockpair_1byte.c
index b3d9924c12..0a45f76395 100644
--- a/test/core/end2end/fixtures/h2_sockpair_1byte.c
+++ b/test/core/end2end/fixtures/h2_sockpair_1byte.c
@@ -98,9 +98,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
 }
 
 static void chttp2_init_client_socketpair(grpc_end2end_test_fixture *f,
-                                          grpc_channel_args *client_args,
-                                          const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                          grpc_channel_args *client_args) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_endpoint_pair *sfd = f->fixture_data;
   grpc_transport *transport;
@@ -137,9 +135,10 @@ static void chttp2_tear_down_socketpair(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/socketpair_one_byte_at_a_time", 0,
-     chttp2_create_fixture_socketpair, chttp2_init_client_socketpair,
-     chttp2_init_server_socketpair, chttp2_tear_down_socketpair},
+    {"chttp2/socketpair_one_byte_at_a_time",
+     FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER, chttp2_create_fixture_socketpair,
+     chttp2_init_client_socketpair, chttp2_init_server_socketpair,
+     chttp2_tear_down_socketpair},
 };
 
 int main(int argc, char **argv) {
diff --git a/test/core/end2end/fixtures/h2_ssl.c b/test/core/end2end/fixtures/h2_ssl.c
index 63282ae081..bbd522cf30 100644
--- a/test/core/end2end/fixtures/h2_ssl.c
+++ b/test/core/end2end/fixtures/h2_ssl.c
@@ -109,9 +109,7 @@ void chttp2_tear_down_secure_fullstack(grpc_end2end_test_fixture *f) {
 }
 
 static void chttp2_init_client_simple_ssl_secure_fullstack(
-    grpc_end2end_test_fixture *f, grpc_channel_args *client_args,
-    const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+    grpc_end2end_test_fixture *f, grpc_channel_args *client_args) {
   grpc_channel_credentials *ssl_creds =
       grpc_ssl_credentials_create(NULL, NULL, NULL);
   grpc_arg ssl_name_override = {GRPC_ARG_STRING,
@@ -153,7 +151,9 @@ static void chttp2_init_server_simple_ssl_secure_fullstack(
 static grpc_end2end_test_config configs[] = {
     {"chttp2/simple_ssl_fullstack",
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
-         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS |
+         FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+         FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_secure_fullstack,
      chttp2_init_client_simple_ssl_secure_fullstack,
      chttp2_init_server_simple_ssl_secure_fullstack,
diff --git a/test/core/end2end/fixtures/h2_ssl_cert.c b/test/core/end2end/fixtures/h2_ssl_cert.c
index 4c2f5f535e..e39cb491de 100644
--- a/test/core/end2end/fixtures/h2_ssl_cert.c
+++ b/test/core/end2end/fixtures/h2_ssl_cert.c
@@ -154,41 +154,39 @@ SERVER_INIT(GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY)
 
 typedef enum { NONE, SELF_SIGNED, SIGNED, BAD_CERT_PAIR } certtype;
 
-#define CLIENT_INIT(cert_type)                                              \
-  static void CLIENT_INIT_NAME(cert_type)(grpc_end2end_test_fixture * f,    \
-                                          grpc_channel_args * client_args,  \
-                                          const char *query_args) {         \
-    GPR_ASSERT(query_args == NULL);                                         \
-    grpc_channel_credentials *ssl_creds = NULL;                             \
-    grpc_ssl_pem_key_cert_pair self_signed_client_key_cert_pair = {         \
-        test_self_signed_client_key, test_self_signed_client_cert};         \
-    grpc_ssl_pem_key_cert_pair signed_client_key_cert_pair = {              \
-        test_signed_client_key, test_signed_client_cert};                   \
-    grpc_ssl_pem_key_cert_pair bad_client_key_cert_pair = {                 \
-        test_self_signed_client_key, test_signed_client_cert};              \
-    grpc_ssl_pem_key_cert_pair *key_cert_pair = NULL;                       \
-    switch (cert_type) {                                                    \
-      case SELF_SIGNED:                                                     \
-        key_cert_pair = &self_signed_client_key_cert_pair;                  \
-        break;                                                              \
-      case SIGNED:                                                          \
-        key_cert_pair = &signed_client_key_cert_pair;                       \
-        break;                                                              \
-      case BAD_CERT_PAIR:                                                   \
-        key_cert_pair = &bad_client_key_cert_pair;                          \
-        break;                                                              \
-      default:                                                              \
-        break;                                                              \
-    }                                                                       \
-    ssl_creds =                                                             \
-        grpc_ssl_credentials_create(test_root_cert, key_cert_pair, NULL);   \
-    grpc_arg ssl_name_override = {GRPC_ARG_STRING,                          \
-                                  GRPC_SSL_TARGET_NAME_OVERRIDE_ARG,        \
-                                  {"foo.test.google.fr"}};                  \
-    grpc_channel_args *new_client_args =                                    \
-        grpc_channel_args_copy_and_add(client_args, &ssl_name_override, 1); \
-    chttp2_init_client_secure_fullstack(f, new_client_args, ssl_creds);     \
-    grpc_channel_args_destroy(new_client_args);                             \
+#define CLIENT_INIT(cert_type)                                               \
+  static void CLIENT_INIT_NAME(cert_type)(grpc_end2end_test_fixture * f,     \
+                                          grpc_channel_args * client_args) { \
+    grpc_channel_credentials *ssl_creds = NULL;                              \
+    grpc_ssl_pem_key_cert_pair self_signed_client_key_cert_pair = {          \
+        test_self_signed_client_key, test_self_signed_client_cert};          \
+    grpc_ssl_pem_key_cert_pair signed_client_key_cert_pair = {               \
+        test_signed_client_key, test_signed_client_cert};                    \
+    grpc_ssl_pem_key_cert_pair bad_client_key_cert_pair = {                  \
+        test_self_signed_client_key, test_signed_client_cert};               \
+    grpc_ssl_pem_key_cert_pair *key_cert_pair = NULL;                        \
+    switch (cert_type) {                                                     \
+      case SELF_SIGNED:                                                      \
+        key_cert_pair = &self_signed_client_key_cert_pair;                   \
+        break;                                                               \
+      case SIGNED:                                                           \
+        key_cert_pair = &signed_client_key_cert_pair;                        \
+        break;                                                               \
+      case BAD_CERT_PAIR:                                                    \
+        key_cert_pair = &bad_client_key_cert_pair;                           \
+        break;                                                               \
+      default:                                                               \
+        break;                                                               \
+    }                                                                        \
+    ssl_creds =                                                              \
+        grpc_ssl_credentials_create(test_root_cert, key_cert_pair, NULL);    \
+    grpc_arg ssl_name_override = {GRPC_ARG_STRING,                           \
+                                  GRPC_SSL_TARGET_NAME_OVERRIDE_ARG,         \
+                                  {"foo.test.google.fr"}};                   \
+    grpc_channel_args *new_client_args =                                     \
+        grpc_channel_args_copy_and_add(client_args, &ssl_name_override, 1);  \
+    chttp2_init_client_secure_fullstack(f, new_client_args, ssl_creds);      \
+    grpc_channel_args_destroy(new_client_args);                              \
   }
 
 CLIENT_INIT(NONE)
@@ -205,7 +203,8 @@ typedef enum { SUCCESS, FAIL } test_result;
   {                                                                       \
     {TEST_NAME(request_type, cert_type, result),                          \
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |                           \
-         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,                      \
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS |                     \
+         FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL,                            \
      chttp2_create_fixture_secure_fullstack, CLIENT_INIT_NAME(cert_type), \
      SERVER_INIT_NAME(request_type), chttp2_tear_down_secure_fullstack},  \
         result                                                            \
@@ -267,7 +266,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
diff --git a/test/core/end2end/fixtures/h2_ssl_proxy.c b/test/core/end2end/fixtures/h2_ssl_proxy.c
index 7d39fb2055..27cf3ebf32 100644
--- a/test/core/end2end/fixtures/h2_ssl_proxy.c
+++ b/test/core/end2end/fixtures/h2_ssl_proxy.c
@@ -142,9 +142,7 @@ void chttp2_tear_down_secure_fullstack(grpc_end2end_test_fixture *f) {
 }
 
 static void chttp2_init_client_simple_ssl_secure_fullstack(
-    grpc_end2end_test_fixture *f, grpc_channel_args *client_args,
-    const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+    grpc_end2end_test_fixture *f, grpc_channel_args *client_args) {
   grpc_channel_credentials *ssl_creds =
       grpc_ssl_credentials_create(NULL, NULL, NULL);
   grpc_arg ssl_name_override = {GRPC_ARG_STRING,
@@ -187,7 +185,9 @@ static grpc_end2end_test_config configs[] = {
     {"chttp2/simple_ssl_fullstack",
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
          FEATURE_MASK_SUPPORTS_REQUEST_PROXYING |
-         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS |
+         FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+         FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_secure_fullstack,
      chttp2_init_client_simple_ssl_secure_fullstack,
      chttp2_init_server_simple_ssl_secure_fullstack,
diff --git a/test/core/end2end/fixtures/h2_uds.c b/test/core/end2end/fixtures/h2_uds.c
index 888d6c0a10..bc973ea8e3 100644
--- a/test/core/end2end/fixtures/h2_uds.c
+++ b/test/core/end2end/fixtures/h2_uds.c
@@ -76,9 +76,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 }
 
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
-                                  grpc_channel_args *client_args,
-                                  const char *query_args) {
-  GPR_ASSERT(query_args == NULL);
+                                  grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
   f->client = grpc_insecure_channel_create(ffd->localaddr, client_args, NULL);
 }
@@ -103,7 +101,9 @@ void chttp2_tear_down_fullstack(grpc_end2end_test_fixture *f) {
 
 /* All test configurations */
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fullstack_uds", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fullstack_uds", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+                                 FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |
+                                 FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER,
      chttp2_create_fixture_fullstack, chttp2_init_client_fullstack,
      chttp2_init_server_fullstack, chttp2_tear_down_fullstack},
 };
diff --git a/test/core/end2end/fixtures/http_proxy.c b/test/core/end2end/fixtures/http_proxy.c
index 9c808209e3..f60c405cda 100644
--- a/test/core/end2end/fixtures/http_proxy.c
+++ b/test/core/end2end/fixtures/http_proxy.c
@@ -59,6 +59,7 @@
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/port.h"
 
 struct grpc_end2end_http_proxy {
@@ -111,10 +112,12 @@ static void proxy_connection_unref(grpc_exec_ctx* exec_ctx,
       grpc_endpoint_destroy(exec_ctx, conn->server_endpoint);
     grpc_pollset_set_destroy(conn->pollset_set);
     grpc_slice_buffer_destroy_internal(exec_ctx, &conn->client_read_buffer);
-    grpc_slice_buffer_destroy_internal(exec_ctx, &conn->client_deferred_write_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx,
+                                       &conn->client_deferred_write_buffer);
     grpc_slice_buffer_destroy_internal(exec_ctx, &conn->client_write_buffer);
     grpc_slice_buffer_destroy_internal(exec_ctx, &conn->server_read_buffer);
-    grpc_slice_buffer_destroy_internal(exec_ctx, &conn->server_deferred_write_buffer);
+    grpc_slice_buffer_destroy_internal(exec_ctx,
+                                       &conn->server_deferred_write_buffer);
     grpc_slice_buffer_destroy_internal(exec_ctx, &conn->server_write_buffer);
     grpc_http_parser_destroy(&conn->http_parser);
     grpc_http_request_destroy(&conn->http_request);
@@ -468,7 +471,7 @@ void grpc_end2end_http_proxy_destroy(grpc_end2end_http_proxy* proxy) {
   grpc_tcp_server_shutdown_listeners(&exec_ctx, proxy->server);
   grpc_tcp_server_unref(&exec_ctx, proxy->server);
   gpr_free(proxy->proxy_name);
-  grpc_channel_args_destroy(proxy->channel_args);
+  grpc_channel_args_destroy(&exec_ctx, proxy->channel_args);
   grpc_closure destroyed;
   grpc_closure_init(&destroyed, destroy_pollset, proxy->pollset);
   grpc_pollset_shutdown(&exec_ctx, proxy->pollset, &destroyed);
diff --git a/test/core/end2end/fuzzers/api_fuzzer.c b/test/core/end2end/fuzzers/api_fuzzer.c
index 4c8aafd8b3..19ac6ced14 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.c
+++ b/test/core/end2end/fuzzers/api_fuzzer.c
@@ -34,6 +34,7 @@
 #include <string.h>
 
 #include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
@@ -45,6 +46,7 @@
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/surface/server.h"
 #include "src/core/lib/transport/metadata.h"
+#include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/passthru_endpoint.h"
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -56,6 +58,21 @@ bool leak_check = true;
 static void dont_log(gpr_log_func_args *args) {}
 
 ////////////////////////////////////////////////////////////////////////////////
+// global state
+
+static gpr_timespec g_now;
+static grpc_server *g_server;
+static grpc_channel *g_channel;
+static grpc_resource_quota *g_resource_quota;
+
+extern gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type);
+
+static gpr_timespec now_impl(gpr_clock_type clock_type) {
+  GPR_ASSERT(clock_type != GPR_TIMESPAN);
+  return g_now;
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // input_stream: allows easy access to input bytes, and allows reading a little
 //               past the end (avoiding needing to check everywhere)
 
@@ -150,13 +167,28 @@ static grpc_channel_args *read_args(input_stream *inp) {
   size_t n = next_byte(inp);
   grpc_arg *args = gpr_malloc(sizeof(*args) * n);
   for (size_t i = 0; i < n; i++) {
-    bool is_string = next_byte(inp) & 1;
-    args[i].type = is_string ? GRPC_ARG_STRING : GRPC_ARG_INTEGER;
-    args[i].key = read_string(inp);
-    if (is_string) {
-      args[i].value.string = read_string(inp);
-    } else {
-      args[i].value.integer = read_int(inp);
+    switch (next_byte(inp)) {
+      case 1:
+        args[i].type = GRPC_ARG_STRING;
+        args[i].key = read_string(inp);
+        args[i].value.string = read_string(inp);
+        break;
+      case 2:
+        args[i].type = GRPC_ARG_INTEGER;
+        args[i].key = read_string(inp);
+        args[i].value.integer = read_int(inp);
+        break;
+      case 3:
+        args[i].type = GRPC_ARG_POINTER;
+        args[i].key = gpr_strdup(GRPC_ARG_RESOURCE_QUOTA);
+        args[i].value.pointer.vtable = grpc_resource_quota_arg_vtable();
+        args[i].value.pointer.p = g_resource_quota;
+        grpc_resource_quota_ref(g_resource_quota);
+        break;
+      default:
+        end(inp);
+        n = i;
+        break;
     }
   }
   grpc_channel_args *a = gpr_malloc(sizeof(*a));
@@ -165,23 +197,138 @@ static grpc_channel_args *read_args(input_stream *inp) {
   return a;
 }
 
-static bool is_eof(input_stream *inp) { return inp->cur == inp->end; }
+typedef struct cred_artifact_ctx {
+  int num_release;
+  char *release[3];
+} cred_artifact_ctx;
+#define CRED_ARTIFACT_CTX_INIT \
+  {                            \
+    0, { 0 }                   \
+  }
 
-////////////////////////////////////////////////////////////////////////////////
-// global state
+static void cred_artifact_ctx_finish(cred_artifact_ctx *ctx) {
+  for (int i = 0; i < ctx->num_release; i++) {
+    gpr_free(ctx->release[i]);
+  }
+}
 
-static gpr_timespec g_now;
-static grpc_server *g_server;
-static grpc_channel *g_channel;
-static grpc_resource_quota *g_resource_quota;
+static const char *read_cred_artifact(cred_artifact_ctx *ctx, input_stream *inp,
+                                      const char **builtins,
+                                      size_t num_builtins) {
+  uint8_t b = next_byte(inp);
+  if (b == 0) return NULL;
+  if (b == 1) return ctx->release[ctx->num_release++] = read_string(inp);
+  if (b >= num_builtins + 1) {
+    end(inp);
+    return NULL;
+  }
+  return builtins[b - 1];
+}
 
-extern gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type);
+static grpc_channel_credentials *read_ssl_channel_creds(input_stream *inp) {
+  cred_artifact_ctx ctx = CRED_ARTIFACT_CTX_INIT;
+  static const char *builtin_root_certs[] = {test_root_cert};
+  static const char *builtin_private_keys[] = {
+      test_server1_key, test_self_signed_client_key, test_signed_client_key};
+  static const char *builtin_cert_chains[] = {
+      test_server1_cert, test_self_signed_client_cert, test_signed_client_cert};
+  const char *root_certs = read_cred_artifact(
+      &ctx, inp, builtin_root_certs, GPR_ARRAY_SIZE(builtin_root_certs));
+  const char *private_key = read_cred_artifact(
+      &ctx, inp, builtin_private_keys, GPR_ARRAY_SIZE(builtin_private_keys));
+  const char *certs = read_cred_artifact(&ctx, inp, builtin_cert_chains,
+                                         GPR_ARRAY_SIZE(builtin_cert_chains));
+  grpc_ssl_pem_key_cert_pair key_cert_pair = {private_key, certs};
+  grpc_channel_credentials *creds = grpc_ssl_credentials_create(
+      root_certs, private_key != NULL && certs != NULL ? &key_cert_pair : NULL,
+      NULL);
+  cred_artifact_ctx_finish(&ctx);
+  return creds;
+}
 
-static gpr_timespec now_impl(gpr_clock_type clock_type) {
-  GPR_ASSERT(clock_type != GPR_TIMESPAN);
-  return g_now;
+static grpc_call_credentials *read_call_creds(input_stream *inp) {
+  switch (next_byte(inp)) {
+    default:
+      end(inp);
+      return NULL;
+    case 0:
+      return NULL;
+    case 1: {
+      grpc_call_credentials *c1 = read_call_creds(inp);
+      grpc_call_credentials *c2 = read_call_creds(inp);
+      if (c1 != NULL && c2 != NULL) {
+        grpc_call_credentials *out =
+            grpc_composite_call_credentials_create(c1, c2, NULL);
+        grpc_call_credentials_release(c1);
+        grpc_call_credentials_release(c2);
+        return out;
+      } else if (c1 != NULL) {
+        return c1;
+      } else if (c2 != NULL) {
+        return c2;
+      } else {
+        return NULL;
+      }
+      GPR_UNREACHABLE_CODE(return NULL);
+    }
+    case 2: {
+      cred_artifact_ctx ctx = CRED_ARTIFACT_CTX_INIT;
+      const char *access_token = read_cred_artifact(&ctx, inp, NULL, 0);
+      grpc_call_credentials *out =
+          access_token == NULL ? NULL : grpc_access_token_credentials_create(
+                                            access_token, NULL);
+      cred_artifact_ctx_finish(&ctx);
+      return out;
+    }
+    case 3: {
+      cred_artifact_ctx ctx = CRED_ARTIFACT_CTX_INIT;
+      const char *auth_token = read_cred_artifact(&ctx, inp, NULL, 0);
+      const char *auth_selector = read_cred_artifact(&ctx, inp, NULL, 0);
+      grpc_call_credentials *out = auth_token == NULL || auth_selector == NULL
+                                       ? NULL
+                                       : grpc_google_iam_credentials_create(
+                                             auth_token, auth_selector, NULL);
+      cred_artifact_ctx_finish(&ctx);
+      return out;
+    }
+      /* TODO(ctiller): more cred types here */
+  }
+}
+
+static grpc_channel_credentials *read_channel_creds(input_stream *inp) {
+  switch (next_byte(inp)) {
+    case 0:
+      return read_ssl_channel_creds(inp);
+      break;
+    case 1: {
+      grpc_channel_credentials *c1 = read_channel_creds(inp);
+      grpc_call_credentials *c2 = read_call_creds(inp);
+      if (c1 != NULL && c2 != NULL) {
+        grpc_channel_credentials *out =
+            grpc_composite_channel_credentials_create(c1, c2, NULL);
+        grpc_channel_credentials_release(c1);
+        grpc_call_credentials_release(c2);
+        return out;
+      } else if (c1) {
+        return c1;
+      } else if (c2) {
+        grpc_call_credentials_release(c2);
+        return NULL;
+      } else {
+        return NULL;
+      }
+      GPR_UNREACHABLE_CODE(return NULL);
+    }
+    case 2:
+      return NULL;
+    default:
+      end(inp);
+      return NULL;
+  }
 }
 
+static bool is_eof(input_stream *inp) { return inp->cur == inp->end; }
+
 ////////////////////////////////////////////////////////////////////////////////
 // dns resolution
 
@@ -947,6 +1094,25 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         grpc_resource_quota_resize(g_resource_quota, read_uint22(&inp));
         break;
       }
+      // create a secure channel
+      case 22: {
+        if (g_channel == NULL) {
+          char *target = read_string(&inp);
+          char *target_uri;
+          gpr_asprintf(&target_uri, "dns:%s", target);
+          grpc_channel_args *args = read_args(&inp);
+          grpc_channel_credentials *creds = read_channel_creds(&inp);
+          g_channel = grpc_secure_channel_create(creds, target_uri, args, NULL);
+          GPR_ASSERT(g_channel != NULL);
+          grpc_channel_args_destroy(args);
+          gpr_free(target_uri);
+          gpr_free(target);
+          grpc_channel_credentials_release(creds);
+        } else {
+          end(&inp);
+        }
+        break;
+      }
     }
   }
 
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0077816beb340a2ef87cc57c18e0ce0d1e6e23fc b/test/core/end2end/fuzzers/api_fuzzer_corpus/0077816beb340a2ef87cc57c18e0ce0d1e6e23fc
new file mode 100644
index 0000000000..459e3e556a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0077816beb340a2ef87cc57c18e0ce0d1e6e23fc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/00a1b8e686014202baacdc052a38d392dff11432 b/test/core/end2end/fuzzers/api_fuzzer_corpus/00a1b8e686014202baacdc052a38d392dff11432
new file mode 100644
index 0000000000..a79fedb8b0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/00a1b8e686014202baacdc052a38d392dff11432
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/00c7c2cc7f90842e766645310e4a439e7b188473 b/test/core/end2end/fuzzers/api_fuzzer_corpus/00c7c2cc7f90842e766645310e4a439e7b188473
new file mode 100644
index 0000000000..1ec88e8457
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/00c7c2cc7f90842e766645310e4a439e7b188473
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/00f89898cb8f3e3c20e7be1d8c7a1544fb81ea5e b/test/core/end2end/fuzzers/api_fuzzer_corpus/00f89898cb8f3e3c20e7be1d8c7a1544fb81ea5e
new file mode 100644
index 0000000000..2f66b146b1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/00f89898cb8f3e3c20e7be1d8c7a1544fb81ea5e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0173fb5c52d97d0d63266a529bf2f6442894b0c6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0173fb5c52d97d0d63266a529bf2f6442894b0c6
new file mode 100644
index 0000000000..85ea412e17
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0173fb5c52d97d0d63266a529bf2f6442894b0c6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/020d06c319b6e511021d21316ba283bca9b40dc9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/020d06c319b6e511021d21316ba283bca9b40dc9
new file mode 100644
index 0000000000..054c3f6d93
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/020d06c319b6e511021d21316ba283bca9b40dc9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0598f8881c26b7e9562cdc4c3f86749dd49598d6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0598f8881c26b7e9562cdc4c3f86749dd49598d6
new file mode 100644
index 0000000000..46cc318eac
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0598f8881c26b7e9562cdc4c3f86749dd49598d6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/071b85ef412067e7db9188bee7c92e4fd661e021 b/test/core/end2end/fuzzers/api_fuzzer_corpus/071b85ef412067e7db9188bee7c92e4fd661e021
new file mode 100644
index 0000000000..d8babf89cf
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/071b85ef412067e7db9188bee7c92e4fd661e021
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0768af66da5e344f21337df8eb0a1c8c955f4244 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0768af66da5e344f21337df8eb0a1c8c955f4244
new file mode 100644
index 0000000000..e3b91f819e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0768af66da5e344f21337df8eb0a1c8c955f4244
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/077202f145bfc7dff77e820cbe6ac6e4ae76e1ed b/test/core/end2end/fuzzers/api_fuzzer_corpus/077202f145bfc7dff77e820cbe6ac6e4ae76e1ed
new file mode 100644
index 0000000000..0b69ec0c6e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/077202f145bfc7dff77e820cbe6ac6e4ae76e1ed
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/07e7bbb0005535e901b7f50e13cba9d5da51c2a5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/07e7bbb0005535e901b7f50e13cba9d5da51c2a5
new file mode 100644
index 0000000000..5eb9e3b345
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/07e7bbb0005535e901b7f50e13cba9d5da51c2a5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/08a6761ed9d5298fc0d0fe9e75196f7527e488d4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/08a6761ed9d5298fc0d0fe9e75196f7527e488d4
new file mode 100644
index 0000000000..603d46ceab
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/08a6761ed9d5298fc0d0fe9e75196f7527e488d4
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/092575ab527ffb459d2e1eed593902820bb462c0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/092575ab527ffb459d2e1eed593902820bb462c0
new file mode 100644
index 0000000000..678461bf79
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/092575ab527ffb459d2e1eed593902820bb462c0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/09985e738bf04fb7827367f2ae70f4697ff5aaf0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/09985e738bf04fb7827367f2ae70f4697ff5aaf0
new file mode 100644
index 0000000000..9876478457
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/09985e738bf04fb7827367f2ae70f4697ff5aaf0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/099d967555bfc237238c93f9d884c004c773b33b b/test/core/end2end/fuzzers/api_fuzzer_corpus/099d967555bfc237238c93f9d884c004c773b33b
new file mode 100644
index 0000000000..65f7c285d9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/099d967555bfc237238c93f9d884c004c773b33b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0b08fc5a8eb4a23766be7b3082308959955d4b13 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0b08fc5a8eb4a23766be7b3082308959955d4b13
new file mode 100644
index 0000000000..a5c3ede04f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0b08fc5a8eb4a23766be7b3082308959955d4b13
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0c088a8261de0bf3b996cc1e7889399acb03fd5a b/test/core/end2end/fuzzers/api_fuzzer_corpus/0c088a8261de0bf3b996cc1e7889399acb03fd5a
new file mode 100644
index 0000000000..a56cf54ae1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0c088a8261de0bf3b996cc1e7889399acb03fd5a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0c10483d4f5018b899483bcf23094f9119919ca4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0c10483d4f5018b899483bcf23094f9119919ca4
new file mode 100644
index 0000000000..b17699c133
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0c10483d4f5018b899483bcf23094f9119919ca4
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0c653a4b68bd77eec050b66ff2d8eae13001c505 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0c653a4b68bd77eec050b66ff2d8eae13001c505
new file mode 100644
index 0000000000..a296741e05
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0c653a4b68bd77eec050b66ff2d8eae13001c505
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0df8bd9c41fb5d8ce8a0f2f28ca16be96bd9997e b/test/core/end2end/fuzzers/api_fuzzer_corpus/0df8bd9c41fb5d8ce8a0f2f28ca16be96bd9997e
new file mode 100644
index 0000000000..b8feab0be7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0df8bd9c41fb5d8ce8a0f2f28ca16be96bd9997e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0e0ecc8214b5083b75216857b967621c0648afc9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0e0ecc8214b5083b75216857b967621c0648afc9
new file mode 100644
index 0000000000..396c6dbae5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0e0ecc8214b5083b75216857b967621c0648afc9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0e5aa755fff40b487617e01f6812d85ad310b727 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0e5aa755fff40b487617e01f6812d85ad310b727
new file mode 100644
index 0000000000..7ea4d192b8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0e5aa755fff40b487617e01f6812d85ad310b727
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0f10d36e818e41f1737245c2bb8cb83a69421cb1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/0f10d36e818e41f1737245c2bb8cb83a69421cb1
new file mode 100644
index 0000000000..05c3d023a1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/0f10d36e818e41f1737245c2bb8cb83a69421cb1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/10ee46dc1973472ead36ec4b8a1ea90200637c73 b/test/core/end2end/fuzzers/api_fuzzer_corpus/10ee46dc1973472ead36ec4b8a1ea90200637c73
new file mode 100644
index 0000000000..53a07a048b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/10ee46dc1973472ead36ec4b8a1ea90200637c73
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/13b2e7a9d9f07a9e06ed96957c56e968f3b6070d b/test/core/end2end/fuzzers/api_fuzzer_corpus/13b2e7a9d9f07a9e06ed96957c56e968f3b6070d
new file mode 100644
index 0000000000..2b5ad2f124
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/13b2e7a9d9f07a9e06ed96957c56e968f3b6070d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/13c269dc54b84acbf75b78db730c25311a61c4ab b/test/core/end2end/fuzzers/api_fuzzer_corpus/13c269dc54b84acbf75b78db730c25311a61c4ab
new file mode 100644
index 0000000000..7503cc2667
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/13c269dc54b84acbf75b78db730c25311a61c4ab
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/140219fcde79e1de47129172abaef4e06e72534d b/test/core/end2end/fuzzers/api_fuzzer_corpus/140219fcde79e1de47129172abaef4e06e72534d
new file mode 100644
index 0000000000..3b8de8ccab
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/140219fcde79e1de47129172abaef4e06e72534d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/16b69b968a140abb00dd5c79ea7d0c1b23510fe7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/16b69b968a140abb00dd5c79ea7d0c1b23510fe7
new file mode 100644
index 0000000000..bf126c823b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/16b69b968a140abb00dd5c79ea7d0c1b23510fe7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/16f798191df0c173217cdcb4ec8edd3e4f7fb99b b/test/core/end2end/fuzzers/api_fuzzer_corpus/16f798191df0c173217cdcb4ec8edd3e4f7fb99b
new file mode 100644
index 0000000000..6d1c302045
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/16f798191df0c173217cdcb4ec8edd3e4f7fb99b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/17381a0515458a92bc8248051b600da4020a1207 b/test/core/end2end/fuzzers/api_fuzzer_corpus/17381a0515458a92bc8248051b600da4020a1207
new file mode 100644
index 0000000000..29b4821844
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/17381a0515458a92bc8248051b600da4020a1207
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/17647336806cf94a0224516f3d8caa22367c7c5a b/test/core/end2end/fuzzers/api_fuzzer_corpus/17647336806cf94a0224516f3d8caa22367c7c5a
new file mode 100644
index 0000000000..7522ae1811
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/17647336806cf94a0224516f3d8caa22367c7c5a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/17c7024889cc97a8afd3133b55a147ba75d17188 b/test/core/end2end/fuzzers/api_fuzzer_corpus/17c7024889cc97a8afd3133b55a147ba75d17188
new file mode 100644
index 0000000000..8ec6c5e2fe
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/17c7024889cc97a8afd3133b55a147ba75d17188
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/194027acca76bf2e874aa672b4491f0b7fe32187 b/test/core/end2end/fuzzers/api_fuzzer_corpus/194027acca76bf2e874aa672b4491f0b7fe32187
new file mode 100644
index 0000000000..ae903fcb3a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/194027acca76bf2e874aa672b4491f0b7fe32187
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/1a6119919790570e3c15bb371648fc7929c72ea2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/1a6119919790570e3c15bb371648fc7929c72ea2
new file mode 100644
index 0000000000..646c5ba37d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/1a6119919790570e3c15bb371648fc7929c72ea2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/1abcbb03796c6512f5b8a977532fbcf6368b45b0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/1abcbb03796c6512f5b8a977532fbcf6368b45b0
new file mode 100644
index 0000000000..b334508449
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/1abcbb03796c6512f5b8a977532fbcf6368b45b0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/1c1a1980a1959423766c5a26ac79d07264224278 b/test/core/end2end/fuzzers/api_fuzzer_corpus/1c1a1980a1959423766c5a26ac79d07264224278
new file mode 100644
index 0000000000..e61a026142
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/1c1a1980a1959423766c5a26ac79d07264224278
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/1d505e827d0036b3d8eab87439d31da5f901aed1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/1d505e827d0036b3d8eab87439d31da5f901aed1
new file mode 100644
index 0000000000..908e75d651
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/1d505e827d0036b3d8eab87439d31da5f901aed1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/1dd9698ad85c7ab577bbc9b36180ef2641d8525c b/test/core/end2end/fuzzers/api_fuzzer_corpus/1dd9698ad85c7ab577bbc9b36180ef2641d8525c
new file mode 100644
index 0000000000..6ace431556
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/1dd9698ad85c7ab577bbc9b36180ef2641d8525c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/217785067a28a2dcdf7c5cea9ef8c10817889aa7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/217785067a28a2dcdf7c5cea9ef8c10817889aa7
new file mode 100644
index 0000000000..c77222c905
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/217785067a28a2dcdf7c5cea9ef8c10817889aa7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/21af47d84b1aa84e8b4021765203c8951239fe41 b/test/core/end2end/fuzzers/api_fuzzer_corpus/21af47d84b1aa84e8b4021765203c8951239fe41
new file mode 100644
index 0000000000..6b71998305
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/21af47d84b1aa84e8b4021765203c8951239fe41
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/22d23ae7b0a9c4ac6ffefe6b6b47bb5f54226ae1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/22d23ae7b0a9c4ac6ffefe6b6b47bb5f54226ae1
new file mode 100644
index 0000000000..c3eb2df96d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/22d23ae7b0a9c4ac6ffefe6b6b47bb5f54226ae1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2339fcca7f93814c587aba47fff2210875a41f49 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2339fcca7f93814c587aba47fff2210875a41f49
new file mode 100644
index 0000000000..02ec8a4b9b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2339fcca7f93814c587aba47fff2210875a41f49
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/239b03041efe9bf24982b0ecbb66d5abea4a28d0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/239b03041efe9bf24982b0ecbb66d5abea4a28d0
new file mode 100644
index 0000000000..8d78ff911d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/239b03041efe9bf24982b0ecbb66d5abea4a28d0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/24d630240f673498d784cecb66d73e9b1d981493 b/test/core/end2end/fuzzers/api_fuzzer_corpus/24d630240f673498d784cecb66d73e9b1d981493
new file mode 100644
index 0000000000..723831344b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/24d630240f673498d784cecb66d73e9b1d981493
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2533c4ed207eed715756142667128f6eb01309e0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2533c4ed207eed715756142667128f6eb01309e0
new file mode 100644
index 0000000000..0bb90c09a6
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2533c4ed207eed715756142667128f6eb01309e0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/255ab618b474a659914f5167f6e89ae3f1376788 b/test/core/end2end/fuzzers/api_fuzzer_corpus/255ab618b474a659914f5167f6e89ae3f1376788
new file mode 100644
index 0000000000..eb26d78201
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/255ab618b474a659914f5167f6e89ae3f1376788
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2577397157d02cde4544e70fd6c3ff68704dd13b b/test/core/end2end/fuzzers/api_fuzzer_corpus/2577397157d02cde4544e70fd6c3ff68704dd13b
new file mode 100644
index 0000000000..5914e4981e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2577397157d02cde4544e70fd6c3ff68704dd13b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/25c8a5f8fbaf47c8a398a284008d90d088c652b2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/25c8a5f8fbaf47c8a398a284008d90d088c652b2
new file mode 100644
index 0000000000..d9adfe4352
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/25c8a5f8fbaf47c8a398a284008d90d088c652b2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/26b6654b4efb469d4c8202dfc2ddafe4fc15e2d1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/26b6654b4efb469d4c8202dfc2ddafe4fc15e2d1
new file mode 100644
index 0000000000..c7901b0834
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/26b6654b4efb469d4c8202dfc2ddafe4fc15e2d1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2806c68471ca16df5356ef6a3379ea46c73c57cc b/test/core/end2end/fuzzers/api_fuzzer_corpus/2806c68471ca16df5356ef6a3379ea46c73c57cc
new file mode 100644
index 0000000000..6a75987740
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2806c68471ca16df5356ef6a3379ea46c73c57cc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2835dc7045dff8fd93a6e50bfd8775a50fce7599 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2835dc7045dff8fd93a6e50bfd8775a50fce7599
new file mode 100644
index 0000000000..9b97edf5e2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2835dc7045dff8fd93a6e50bfd8775a50fce7599
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/28f73943647c3bfbd96e8d1a6188c428b15fdf12 b/test/core/end2end/fuzzers/api_fuzzer_corpus/28f73943647c3bfbd96e8d1a6188c428b15fdf12
new file mode 100644
index 0000000000..50d31d1e94
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/28f73943647c3bfbd96e8d1a6188c428b15fdf12
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/29f39c36ffc68643789cd59ab9311a899fd9cfa6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/29f39c36ffc68643789cd59ab9311a899fd9cfa6
new file mode 100644
index 0000000000..fb60c67177
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/29f39c36ffc68643789cd59ab9311a899fd9cfa6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2afc0ae3e27ba7ab7ea26d656a01da4d85e0bbea b/test/core/end2end/fuzzers/api_fuzzer_corpus/2afc0ae3e27ba7ab7ea26d656a01da4d85e0bbea
new file mode 100644
index 0000000000..2d0ced00b6
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2afc0ae3e27ba7ab7ea26d656a01da4d85e0bbea
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2b6a001c2274e347cbfc6fe2e3bf4f7d7e79f5fe b/test/core/end2end/fuzzers/api_fuzzer_corpus/2b6a001c2274e347cbfc6fe2e3bf4f7d7e79f5fe
new file mode 100644
index 0000000000..fc05a69d44
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2b6a001c2274e347cbfc6fe2e3bf4f7d7e79f5fe
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2bc40826844d2232d9d36699432a30b4b1e5dd3a b/test/core/end2end/fuzzers/api_fuzzer_corpus/2bc40826844d2232d9d36699432a30b4b1e5dd3a
new file mode 100644
index 0000000000..2bce71768d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2bc40826844d2232d9d36699432a30b4b1e5dd3a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2bcd71048dec1df45e36fde6deeb8f04bbd01cd4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2bcd71048dec1df45e36fde6deeb8f04bbd01cd4
new file mode 100644
index 0000000000..2a3e0fc959
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2bcd71048dec1df45e36fde6deeb8f04bbd01cd4
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2bfa23d5d476e4266cba3979f81a9ebdc26993e1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2bfa23d5d476e4266cba3979f81a9ebdc26993e1
new file mode 100644
index 0000000000..c36a636149
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2bfa23d5d476e4266cba3979f81a9ebdc26993e1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2c5b259108eb1a9735d7a89609d96bc043914cdb b/test/core/end2end/fuzzers/api_fuzzer_corpus/2c5b259108eb1a9735d7a89609d96bc043914cdb
new file mode 100644
index 0000000000..3bab29c13b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2c5b259108eb1a9735d7a89609d96bc043914cdb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2d742d21ecbf421506ecf19b23d6075feca4350b b/test/core/end2end/fuzzers/api_fuzzer_corpus/2d742d21ecbf421506ecf19b23d6075feca4350b
new file mode 100644
index 0000000000..16d729ed13
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2d742d21ecbf421506ecf19b23d6075feca4350b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2dd76fc710e3e78eaf4e5069fa227de678d0830d b/test/core/end2end/fuzzers/api_fuzzer_corpus/2dd76fc710e3e78eaf4e5069fa227de678d0830d
new file mode 100644
index 0000000000..c15ba97dd7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2dd76fc710e3e78eaf4e5069fa227de678d0830d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2f8262de35a8314655d55f10ca46db441577ba36 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2f8262de35a8314655d55f10ca46db441577ba36
new file mode 100644
index 0000000000..983bfd3e0e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2f8262de35a8314655d55f10ca46db441577ba36
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2f9dd3b98b22bf2d4af5c2922977c8bb5699c367 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2f9dd3b98b22bf2d4af5c2922977c8bb5699c367
new file mode 100644
index 0000000000..a7d940a2e8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2f9dd3b98b22bf2d4af5c2922977c8bb5699c367
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/2ff0986c252d462149597fd83bd5753926d343a0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/2ff0986c252d462149597fd83bd5753926d343a0
new file mode 100644
index 0000000000..6640c96a01
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/2ff0986c252d462149597fd83bd5753926d343a0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3037118f9983abef4c9757742269f00cc90c0609 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3037118f9983abef4c9757742269f00cc90c0609
new file mode 100644
index 0000000000..15e6f5a6d1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3037118f9983abef4c9757742269f00cc90c0609
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/312b8910d1965fbfb09f0cb73e7e9d28316677bb b/test/core/end2end/fuzzers/api_fuzzer_corpus/312b8910d1965fbfb09f0cb73e7e9d28316677bb
new file mode 100644
index 0000000000..1e158f3f56
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/312b8910d1965fbfb09f0cb73e7e9d28316677bb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/321e6127d6f5619c88e31037f7fdec581acf75e8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/321e6127d6f5619c88e31037f7fdec581acf75e8
new file mode 100644
index 0000000000..1dd9bbc684
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/321e6127d6f5619c88e31037f7fdec581acf75e8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/33306900f08f0b618c2bf4ba6f6144be9d19cb97 b/test/core/end2end/fuzzers/api_fuzzer_corpus/33306900f08f0b618c2bf4ba6f6144be9d19cb97
new file mode 100644
index 0000000000..74889e3d16
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/33306900f08f0b618c2bf4ba6f6144be9d19cb97
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/34052cc2fa2be6543184db85d0b9ad33ae17029c b/test/core/end2end/fuzzers/api_fuzzer_corpus/34052cc2fa2be6543184db85d0b9ad33ae17029c
new file mode 100644
index 0000000000..3f19b37419
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/34052cc2fa2be6543184db85d0b9ad33ae17029c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/351c6aabe840d69a16ca0f630c6c5a11d42cb85c b/test/core/end2end/fuzzers/api_fuzzer_corpus/351c6aabe840d69a16ca0f630c6c5a11d42cb85c
new file mode 100644
index 0000000000..946a916da8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/351c6aabe840d69a16ca0f630c6c5a11d42cb85c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/35623259c0d5d73d23ea52efc3e4bd808c119440 b/test/core/end2end/fuzzers/api_fuzzer_corpus/35623259c0d5d73d23ea52efc3e4bd808c119440
new file mode 100644
index 0000000000..aa00ef36f8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/35623259c0d5d73d23ea52efc3e4bd808c119440
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/35b84f9f429e72230f0e9f6400ae5052c961fb27 b/test/core/end2end/fuzzers/api_fuzzer_corpus/35b84f9f429e72230f0e9f6400ae5052c961fb27
new file mode 100644
index 0000000000..d69c2a0d44
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/35b84f9f429e72230f0e9f6400ae5052c961fb27
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3606c0748089f53e252b577ff7ab2df203d098ff b/test/core/end2end/fuzzers/api_fuzzer_corpus/3606c0748089f53e252b577ff7ab2df203d098ff
new file mode 100644
index 0000000000..76a906b51c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3606c0748089f53e252b577ff7ab2df203d098ff
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/364f0605fd2d145db6ee6c7b01affb8833379db4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/364f0605fd2d145db6ee6c7b01affb8833379db4
new file mode 100644
index 0000000000..9067d63527
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/364f0605fd2d145db6ee6c7b01affb8833379db4
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/371d4ed270fb3cc3858a33fc0a857da2a21e6478 b/test/core/end2end/fuzzers/api_fuzzer_corpus/371d4ed270fb3cc3858a33fc0a857da2a21e6478
new file mode 100644
index 0000000000..48f73afe4b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/371d4ed270fb3cc3858a33fc0a857da2a21e6478
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/37b8a63d83441e64e279457d0e8318581ad3a7e6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/37b8a63d83441e64e279457d0e8318581ad3a7e6
new file mode 100644
index 0000000000..fbb9438e72
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/37b8a63d83441e64e279457d0e8318581ad3a7e6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/37c26aa03db5daa01d7233f3c9fc474f81a724d1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/37c26aa03db5daa01d7233f3c9fc474f81a724d1
new file mode 100644
index 0000000000..31b6c4e778
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/37c26aa03db5daa01d7233f3c9fc474f81a724d1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/39330aec49922885cf84803d7a5ee61d5948ee66 b/test/core/end2end/fuzzers/api_fuzzer_corpus/39330aec49922885cf84803d7a5ee61d5948ee66
new file mode 100644
index 0000000000..f0ebfe7d7e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/39330aec49922885cf84803d7a5ee61d5948ee66
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3a07fd9ba009b9a57e298343e815abab13a16f5c b/test/core/end2end/fuzzers/api_fuzzer_corpus/3a07fd9ba009b9a57e298343e815abab13a16f5c
new file mode 100644
index 0000000000..0fa32fcf68
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3a07fd9ba009b9a57e298343e815abab13a16f5c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3a74f1be7106c7dea533a34bd8a88974f69a5d71 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3a74f1be7106c7dea533a34bd8a88974f69a5d71
new file mode 100644
index 0000000000..6f9a98b38c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3a74f1be7106c7dea533a34bd8a88974f69a5d71
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3abac3ec4db280fe9b8893b5f42986508dd87201 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3abac3ec4db280fe9b8893b5f42986508dd87201
new file mode 100644
index 0000000000..ef7cf36271
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3abac3ec4db280fe9b8893b5f42986508dd87201
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3adaa0aea970123baa8ddb2560842c43bd19eb3f b/test/core/end2end/fuzzers/api_fuzzer_corpus/3adaa0aea970123baa8ddb2560842c43bd19eb3f
new file mode 100644
index 0000000000..6f4d4ec8ea
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3adaa0aea970123baa8ddb2560842c43bd19eb3f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3adc410756f3e9cb929570bd5e5107663e8eed80 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3adc410756f3e9cb929570bd5e5107663e8eed80
new file mode 100644
index 0000000000..c4f17cb25d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3adc410756f3e9cb929570bd5e5107663e8eed80
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3c2b6ebd2cd3fa2ea216ed01c4a7275ecbaa40c0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3c2b6ebd2cd3fa2ea216ed01c4a7275ecbaa40c0
new file mode 100644
index 0000000000..bfb0ab0374
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3c2b6ebd2cd3fa2ea216ed01c4a7275ecbaa40c0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3c94ad60589b22d99dd03f98b37c609c180a755d b/test/core/end2end/fuzzers/api_fuzzer_corpus/3c94ad60589b22d99dd03f98b37c609c180a755d
new file mode 100644
index 0000000000..4fc4e7cee3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3c94ad60589b22d99dd03f98b37c609c180a755d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3d48a5c5a6188238bffee78f07b7cf6bb854258d b/test/core/end2end/fuzzers/api_fuzzer_corpus/3d48a5c5a6188238bffee78f07b7cf6bb854258d
new file mode 100644
index 0000000000..5fd299be52
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3d48a5c5a6188238bffee78f07b7cf6bb854258d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3d770d35de84de36ce4ed5b22f782edc99ecc634 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3d770d35de84de36ce4ed5b22f782edc99ecc634
new file mode 100644
index 0000000000..3f52390607
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3d770d35de84de36ce4ed5b22f782edc99ecc634
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3e0407abf398a7c40a34df7ed33ff23de02a2a6b b/test/core/end2end/fuzzers/api_fuzzer_corpus/3e0407abf398a7c40a34df7ed33ff23de02a2a6b
new file mode 100644
index 0000000000..b3535e3bc2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3e0407abf398a7c40a34df7ed33ff23de02a2a6b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3e539f323c6ddea1bd3e34599a3c47b4457acdcf b/test/core/end2end/fuzzers/api_fuzzer_corpus/3e539f323c6ddea1bd3e34599a3c47b4457acdcf
new file mode 100644
index 0000000000..b8276b3ebe
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3e539f323c6ddea1bd3e34599a3c47b4457acdcf
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3ed3fbcdae0ab5b185d6e7f1f46c2440f656e8d6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3ed3fbcdae0ab5b185d6e7f1f46c2440f656e8d6
new file mode 100644
index 0000000000..428de29ef2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3ed3fbcdae0ab5b185d6e7f1f46c2440f656e8d6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3ef10f7eba289d88e82f3678434ecc1218a47ee3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3ef10f7eba289d88e82f3678434ecc1218a47ee3
new file mode 100644
index 0000000000..e5afb362d1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3ef10f7eba289d88e82f3678434ecc1218a47ee3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3f4ab27065d2a4fed7d011af384e03150b72eda5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3f4ab27065d2a4fed7d011af384e03150b72eda5
new file mode 100644
index 0000000000..ca0d421ff3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3f4ab27065d2a4fed7d011af384e03150b72eda5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3f4ee68f1f22eabcd01c2a7c1c6c8ccc299aa97d b/test/core/end2end/fuzzers/api_fuzzer_corpus/3f4ee68f1f22eabcd01c2a7c1c6c8ccc299aa97d
new file mode 100644
index 0000000000..c6d0b7c7aa
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3f4ee68f1f22eabcd01c2a7c1c6c8ccc299aa97d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3fbf231b2182dc58d2cdf1c62f01a8b709752505 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3fbf231b2182dc58d2cdf1c62f01a8b709752505
new file mode 100644
index 0000000000..65e06f4b14
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/3fbf231b2182dc58d2cdf1c62f01a8b709752505
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/40b500d38927c62c6966039b8557f810b3c19dc1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/40b500d38927c62c6966039b8557f810b3c19dc1
new file mode 100644
index 0000000000..5c19c386a7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/40b500d38927c62c6966039b8557f810b3c19dc1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/427392659bf3a945097c6c754a17d8c15e23816f b/test/core/end2end/fuzzers/api_fuzzer_corpus/427392659bf3a945097c6c754a17d8c15e23816f
new file mode 100644
index 0000000000..291b086295
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/427392659bf3a945097c6c754a17d8c15e23816f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/42b3c2bc6a11cea9d3ac86fbb8411360da676268 b/test/core/end2end/fuzzers/api_fuzzer_corpus/42b3c2bc6a11cea9d3ac86fbb8411360da676268
new file mode 100644
index 0000000000..4e48a54182
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/42b3c2bc6a11cea9d3ac86fbb8411360da676268
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/42bcf462c3b918f07c52e87bcea6fd69a1f291b1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/42bcf462c3b918f07c52e87bcea6fd69a1f291b1
new file mode 100644
index 0000000000..85652ae03e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/42bcf462c3b918f07c52e87bcea6fd69a1f291b1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/42e6fb19dac07a0cbe747dfc8f1c90bae1d58cec b/test/core/end2end/fuzzers/api_fuzzer_corpus/42e6fb19dac07a0cbe747dfc8f1c90bae1d58cec
new file mode 100644
index 0000000000..b271f38251
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/42e6fb19dac07a0cbe747dfc8f1c90bae1d58cec
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/43d52b36766d71176a2fc9f2a4be385bd2638570 b/test/core/end2end/fuzzers/api_fuzzer_corpus/43d52b36766d71176a2fc9f2a4be385bd2638570
new file mode 100644
index 0000000000..728887bdfb
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/43d52b36766d71176a2fc9f2a4be385bd2638570
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/44e696d37d7c113cf070d19871d5cc4e24a861d2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/44e696d37d7c113cf070d19871d5cc4e24a861d2
new file mode 100644
index 0000000000..cb537d05ff
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/44e696d37d7c113cf070d19871d5cc4e24a861d2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/44ec5dcc4133f1786084202bf41d877702ce9277 b/test/core/end2end/fuzzers/api_fuzzer_corpus/44ec5dcc4133f1786084202bf41d877702ce9277
new file mode 100644
index 0000000000..1d09faff2e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/44ec5dcc4133f1786084202bf41d877702ce9277
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/463a882b12f48bf803b650e95f3968a28732fc02 b/test/core/end2end/fuzzers/api_fuzzer_corpus/463a882b12f48bf803b650e95f3968a28732fc02
new file mode 100644
index 0000000000..84223ab736
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/463a882b12f48bf803b650e95f3968a28732fc02
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/464ad6f3ca7fdcaf80dd97478b6aa3b7005db6f2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/464ad6f3ca7fdcaf80dd97478b6aa3b7005db6f2
new file mode 100644
index 0000000000..5f860da3ce
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/464ad6f3ca7fdcaf80dd97478b6aa3b7005db6f2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/467971d589278cc348786054add9f1efda2fef9e b/test/core/end2end/fuzzers/api_fuzzer_corpus/467971d589278cc348786054add9f1efda2fef9e
new file mode 100644
index 0000000000..c0947bdbda
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/467971d589278cc348786054add9f1efda2fef9e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/47062580b496ad925d4d2faf1baec14bfe69a95b b/test/core/end2end/fuzzers/api_fuzzer_corpus/47062580b496ad925d4d2faf1baec14bfe69a95b
new file mode 100644
index 0000000000..2b07fa90a1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/47062580b496ad925d4d2faf1baec14bfe69a95b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/484ba3a787c8dab704c5d451e834044b46e35cdd b/test/core/end2end/fuzzers/api_fuzzer_corpus/484ba3a787c8dab704c5d451e834044b46e35cdd
new file mode 100644
index 0000000000..2f596e762a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/484ba3a787c8dab704c5d451e834044b46e35cdd
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/48b3180434c4a21b334d7032ded763ef62b501bc b/test/core/end2end/fuzzers/api_fuzzer_corpus/48b3180434c4a21b334d7032ded763ef62b501bc
new file mode 100644
index 0000000000..60e3a89c43
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/48b3180434c4a21b334d7032ded763ef62b501bc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/48ca1abe666bbf83a81d5c3be2d72017131ca4bf b/test/core/end2end/fuzzers/api_fuzzer_corpus/48ca1abe666bbf83a81d5c3be2d72017131ca4bf
new file mode 100644
index 0000000000..19afa2546a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/48ca1abe666bbf83a81d5c3be2d72017131ca4bf
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/494f747fe7c326002c3fb676c35d5dca2e28fd89 b/test/core/end2end/fuzzers/api_fuzzer_corpus/494f747fe7c326002c3fb676c35d5dca2e28fd89
new file mode 100644
index 0000000000..883f2a5092
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/494f747fe7c326002c3fb676c35d5dca2e28fd89
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/49ff30e0f070fe37b642dd0d361c5cbca139f223 b/test/core/end2end/fuzzers/api_fuzzer_corpus/49ff30e0f070fe37b642dd0d361c5cbca139f223
new file mode 100644
index 0000000000..0b59f3e588
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/49ff30e0f070fe37b642dd0d361c5cbca139f223
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4a4ed32b4433e3cd99a4cd3cea00551074d07c9d b/test/core/end2end/fuzzers/api_fuzzer_corpus/4a4ed32b4433e3cd99a4cd3cea00551074d07c9d
new file mode 100644
index 0000000000..5d75af78e9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4a4ed32b4433e3cd99a4cd3cea00551074d07c9d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4a7f8838cbf48e54b6649e62a32d4f0173ada959 b/test/core/end2end/fuzzers/api_fuzzer_corpus/4a7f8838cbf48e54b6649e62a32d4f0173ada959
new file mode 100644
index 0000000000..c8e39d29de
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4a7f8838cbf48e54b6649e62a32d4f0173ada959
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4aac2683fc841a2b5da166889c54c01aa2ab9c6c b/test/core/end2end/fuzzers/api_fuzzer_corpus/4aac2683fc841a2b5da166889c54c01aa2ab9c6c
new file mode 100644
index 0000000000..af526c1ccc
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4aac2683fc841a2b5da166889c54c01aa2ab9c6c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4b08cbe9580dee1321fca514e74fbdd0022ec574 b/test/core/end2end/fuzzers/api_fuzzer_corpus/4b08cbe9580dee1321fca514e74fbdd0022ec574
new file mode 100644
index 0000000000..d99342a0dc
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4b08cbe9580dee1321fca514e74fbdd0022ec574
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4b538eda0a7ad5d38b9d95867b7c181cbe84589b b/test/core/end2end/fuzzers/api_fuzzer_corpus/4b538eda0a7ad5d38b9d95867b7c181cbe84589b
new file mode 100644
index 0000000000..109dd138fe
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4b538eda0a7ad5d38b9d95867b7c181cbe84589b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4df3330a4c9a861ed98d0c5a19f7388ab1c9840d b/test/core/end2end/fuzzers/api_fuzzer_corpus/4df3330a4c9a861ed98d0c5a19f7388ab1c9840d
new file mode 100644
index 0000000000..342f0e5d06
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4df3330a4c9a861ed98d0c5a19f7388ab1c9840d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4e4e5902e6d79c5d57bbf631863ab51b8b07943a b/test/core/end2end/fuzzers/api_fuzzer_corpus/4e4e5902e6d79c5d57bbf631863ab51b8b07943a
new file mode 100644
index 0000000000..63ff4dd0c9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4e4e5902e6d79c5d57bbf631863ab51b8b07943a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/4eb0173ccf074ec6d8c1943f3ab2464184262426 b/test/core/end2end/fuzzers/api_fuzzer_corpus/4eb0173ccf074ec6d8c1943f3ab2464184262426
new file mode 100644
index 0000000000..223d45908e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/4eb0173ccf074ec6d8c1943f3ab2464184262426
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/50125f617f85b033f72e4938f227fc771083e9d1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/50125f617f85b033f72e4938f227fc771083e9d1
new file mode 100644
index 0000000000..746eeaf199
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/50125f617f85b033f72e4938f227fc771083e9d1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/507b8ecbb9fd3eea9084087bce22a94cca8a7c41 b/test/core/end2end/fuzzers/api_fuzzer_corpus/507b8ecbb9fd3eea9084087bce22a94cca8a7c41
new file mode 100644
index 0000000000..818612a4ba
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/507b8ecbb9fd3eea9084087bce22a94cca8a7c41
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/509fa48e02986acab87796b1976e78a6ec243b79 b/test/core/end2end/fuzzers/api_fuzzer_corpus/509fa48e02986acab87796b1976e78a6ec243b79
new file mode 100644
index 0000000000..70c43013f3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/509fa48e02986acab87796b1976e78a6ec243b79
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/51a2c3035dc5359f9887b588b922faa6789c7ea7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/51a2c3035dc5359f9887b588b922faa6789c7ea7
new file mode 100644
index 0000000000..7d916bfb8f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/51a2c3035dc5359f9887b588b922faa6789c7ea7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5259807dc13effc44f0785be11f5dc0c0f35a659 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5259807dc13effc44f0785be11f5dc0c0f35a659
new file mode 100644
index 0000000000..4a99f75ad7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5259807dc13effc44f0785be11f5dc0c0f35a659
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/531c6bd636d1d022ecdabf41243c1f036162bd8b b/test/core/end2end/fuzzers/api_fuzzer_corpus/531c6bd636d1d022ecdabf41243c1f036162bd8b
new file mode 100644
index 0000000000..9edd3ec384
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/531c6bd636d1d022ecdabf41243c1f036162bd8b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5347599c4246a004f9cbecfa78d39168237b6394 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5347599c4246a004f9cbecfa78d39168237b6394
new file mode 100644
index 0000000000..b5de97437b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5347599c4246a004f9cbecfa78d39168237b6394
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5356dcd6b1d0487f9723663f8a3dc955b7e09273 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5356dcd6b1d0487f9723663f8a3dc955b7e09273
new file mode 100644
index 0000000000..9ea58aab61
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5356dcd6b1d0487f9723663f8a3dc955b7e09273
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/53d637a3f0b9fc07dee0de089080e5c105381eb1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/53d637a3f0b9fc07dee0de089080e5c105381eb1
new file mode 100644
index 0000000000..1d58a056bc
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/53d637a3f0b9fc07dee0de089080e5c105381eb1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/55c1b1bd6e532928ad47cadd8e5c5363849d7df5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/55c1b1bd6e532928ad47cadd8e5c5363849d7df5
new file mode 100644
index 0000000000..1cb102612e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/55c1b1bd6e532928ad47cadd8e5c5363849d7df5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/568af7c1199c646c500e287b50abada8ac0ff2da b/test/core/end2end/fuzzers/api_fuzzer_corpus/568af7c1199c646c500e287b50abada8ac0ff2da
new file mode 100644
index 0000000000..2e61a0122e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/568af7c1199c646c500e287b50abada8ac0ff2da
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/56be7398f856423e2252d1a4e31103ebaebcc15b b/test/core/end2end/fuzzers/api_fuzzer_corpus/56be7398f856423e2252d1a4e31103ebaebcc15b
new file mode 100644
index 0000000000..352dca6cc0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/56be7398f856423e2252d1a4e31103ebaebcc15b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/56fb970061e8b61059130c0ac642bd0ceb0ea26d b/test/core/end2end/fuzzers/api_fuzzer_corpus/56fb970061e8b61059130c0ac642bd0ceb0ea26d
new file mode 100644
index 0000000000..a9648a22f0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/56fb970061e8b61059130c0ac642bd0ceb0ea26d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5748d19bd88d2495f0ced135e70b5bb4fe0b4148 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5748d19bd88d2495f0ced135e70b5bb4fe0b4148
new file mode 100644
index 0000000000..9d0c41260e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5748d19bd88d2495f0ced135e70b5bb4fe0b4148
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/587d211412b8405e82245f511007083dd60b7477 b/test/core/end2end/fuzzers/api_fuzzer_corpus/587d211412b8405e82245f511007083dd60b7477
new file mode 100644
index 0000000000..80cffc0f8e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/587d211412b8405e82245f511007083dd60b7477
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/58f2f1f487dcd6cc6f2126835ec647c73f0d371a b/test/core/end2end/fuzzers/api_fuzzer_corpus/58f2f1f487dcd6cc6f2126835ec647c73f0d371a
new file mode 100644
index 0000000000..72ccf3e884
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/58f2f1f487dcd6cc6f2126835ec647c73f0d371a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/58f87cac2d3f564f1afe4ca85637e47b758796a5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/58f87cac2d3f564f1afe4ca85637e47b758796a5
new file mode 100644
index 0000000000..8832ada456
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/58f87cac2d3f564f1afe4ca85637e47b758796a5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5928c7d56230ac7c10860c64ebfa6aa243f2966c b/test/core/end2end/fuzzers/api_fuzzer_corpus/5928c7d56230ac7c10860c64ebfa6aa243f2966c
new file mode 100644
index 0000000000..88a876c932
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5928c7d56230ac7c10860c64ebfa6aa243f2966c
@@ -0,0 +1 @@
+ëô
\ No newline at end of file
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5a3dbe637791a9a7c5005b985c1cc3e7066f8f50 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5a3dbe637791a9a7c5005b985c1cc3e7066f8f50
new file mode 100644
index 0000000000..a8642fdd05
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5a3dbe637791a9a7c5005b985c1cc3e7066f8f50
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5ad89e10b538191d22187503233223d2e520d80f b/test/core/end2end/fuzzers/api_fuzzer_corpus/5ad89e10b538191d22187503233223d2e520d80f
new file mode 100644
index 0000000000..02b06b2af3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5ad89e10b538191d22187503233223d2e520d80f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5b1d5721f3828cb73647cbf8c9e6b456a505a00b b/test/core/end2end/fuzzers/api_fuzzer_corpus/5b1d5721f3828cb73647cbf8c9e6b456a505a00b
new file mode 100644
index 0000000000..f62a7f00c7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5b1d5721f3828cb73647cbf8c9e6b456a505a00b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5b8bc6a61171513d5c9a96cb340e0a435c524017 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5b8bc6a61171513d5c9a96cb340e0a435c524017
new file mode 100644
index 0000000000..3abc5c8fe5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5b8bc6a61171513d5c9a96cb340e0a435c524017
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5bcde4a99b8ad54a5b8ba9b5131842c6c7c0ef19 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5bcde4a99b8ad54a5b8ba9b5131842c6c7c0ef19
new file mode 100644
index 0000000000..1008f5cc43
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5bcde4a99b8ad54a5b8ba9b5131842c6c7c0ef19
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5cd1f23514773a7c5dd30be268b6fcfd1ace84b3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5cd1f23514773a7c5dd30be268b6fcfd1ace84b3
new file mode 100644
index 0000000000..895cdd8095
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5cd1f23514773a7c5dd30be268b6fcfd1ace84b3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5d8bc49f1deb0199a806113ab049df418a9d9316 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5d8bc49f1deb0199a806113ab049df418a9d9316
new file mode 100644
index 0000000000..152b150379
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5d8bc49f1deb0199a806113ab049df418a9d9316
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5da04bc3d5b4889de2f12508ef13bcb490787854 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5da04bc3d5b4889de2f12508ef13bcb490787854
new file mode 100644
index 0000000000..1f8c58dbb9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5da04bc3d5b4889de2f12508ef13bcb490787854
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/5fe822a742cf2f5328cec86c0972b0c7b4bd4460 b/test/core/end2end/fuzzers/api_fuzzer_corpus/5fe822a742cf2f5328cec86c0972b0c7b4bd4460
new file mode 100644
index 0000000000..442304561b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/5fe822a742cf2f5328cec86c0972b0c7b4bd4460
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6016f65e62600b73d18ca8548591034fcddf440c b/test/core/end2end/fuzzers/api_fuzzer_corpus/6016f65e62600b73d18ca8548591034fcddf440c
new file mode 100644
index 0000000000..6b1629935b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6016f65e62600b73d18ca8548591034fcddf440c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/61614f406af22aa805e6a2cfb24519ffd058d575 b/test/core/end2end/fuzzers/api_fuzzer_corpus/61614f406af22aa805e6a2cfb24519ffd058d575
new file mode 100644
index 0000000000..c66b8d6532
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/61614f406af22aa805e6a2cfb24519ffd058d575
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6196eb700471a9678e3e68526ab65bf4346c5bad b/test/core/end2end/fuzzers/api_fuzzer_corpus/6196eb700471a9678e3e68526ab65bf4346c5bad
new file mode 100644
index 0000000000..823622a4cc
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6196eb700471a9678e3e68526ab65bf4346c5bad
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/622a3505d10767b795fc2c2922c0d5305d9b84e6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/622a3505d10767b795fc2c2922c0d5305d9b84e6
new file mode 100644
index 0000000000..3ecf7ac06f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/622a3505d10767b795fc2c2922c0d5305d9b84e6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/63626e71d4e8e15905f13933f5b88d89073b3411 b/test/core/end2end/fuzzers/api_fuzzer_corpus/63626e71d4e8e15905f13933f5b88d89073b3411
new file mode 100644
index 0000000000..21ae807b08
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/63626e71d4e8e15905f13933f5b88d89073b3411
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/63b74d17bfbd015bb55dda59a05101bee001369c b/test/core/end2end/fuzzers/api_fuzzer_corpus/63b74d17bfbd015bb55dda59a05101bee001369c
new file mode 100644
index 0000000000..24c0da603c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/63b74d17bfbd015bb55dda59a05101bee001369c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/63d83cb5580d3222eb5e2d7982f7f995634ba5c1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/63d83cb5580d3222eb5e2d7982f7f995634ba5c1
new file mode 100644
index 0000000000..0ec510fca1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/63d83cb5580d3222eb5e2d7982f7f995634ba5c1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/64ce7e5553de2c081991af4fc386bffdd8d2e210 b/test/core/end2end/fuzzers/api_fuzzer_corpus/64ce7e5553de2c081991af4fc386bffdd8d2e210
new file mode 100644
index 0000000000..264a898e3a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/64ce7e5553de2c081991af4fc386bffdd8d2e210
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/65afd7305e481da5ffc44a6a66eb3117744ae77d b/test/core/end2end/fuzzers/api_fuzzer_corpus/65afd7305e481da5ffc44a6a66eb3117744ae77d
new file mode 100644
index 0000000000..f2ff80c7be
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/65afd7305e481da5ffc44a6a66eb3117744ae77d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/65d8075993dbb2ed83dea46cd76e974352916eac b/test/core/end2end/fuzzers/api_fuzzer_corpus/65d8075993dbb2ed83dea46cd76e974352916eac
new file mode 100644
index 0000000000..4f26aab920
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/65d8075993dbb2ed83dea46cd76e974352916eac
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/663e7fc276b902cd6efb5bc944c4c7af90ca916d b/test/core/end2end/fuzzers/api_fuzzer_corpus/663e7fc276b902cd6efb5bc944c4c7af90ca916d
new file mode 100644
index 0000000000..6509515b85
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/663e7fc276b902cd6efb5bc944c4c7af90ca916d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6730972339225220310ac8c09c0f776ae465fc87 b/test/core/end2end/fuzzers/api_fuzzer_corpus/6730972339225220310ac8c09c0f776ae465fc87
new file mode 100644
index 0000000000..c2eda84c17
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6730972339225220310ac8c09c0f776ae465fc87
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6810347353fd417add645af90476310bbf572788 b/test/core/end2end/fuzzers/api_fuzzer_corpus/6810347353fd417add645af90476310bbf572788
new file mode 100644
index 0000000000..220438c90b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6810347353fd417add645af90476310bbf572788
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6839920a4e7e998a8f30e6679934b91a819bebc9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/6839920a4e7e998a8f30e6679934b91a819bebc9
new file mode 100644
index 0000000000..129d36e222
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6839920a4e7e998a8f30e6679934b91a819bebc9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/68d88fa596ebee37d7c0251c0abcd844b452cf28 b/test/core/end2end/fuzzers/api_fuzzer_corpus/68d88fa596ebee37d7c0251c0abcd844b452cf28
new file mode 100644
index 0000000000..b958c050b4
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/68d88fa596ebee37d7c0251c0abcd844b452cf28
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6a0c934ac351b40c8815d7812a2bb1b0ca30940f b/test/core/end2end/fuzzers/api_fuzzer_corpus/6a0c934ac351b40c8815d7812a2bb1b0ca30940f
new file mode 100644
index 0000000000..66d482ab81
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6a0c934ac351b40c8815d7812a2bb1b0ca30940f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6ae9bab625e9ac8210953a7363167d6deaf194ec b/test/core/end2end/fuzzers/api_fuzzer_corpus/6ae9bab625e9ac8210953a7363167d6deaf194ec
new file mode 100644
index 0000000000..1e65ebcfd0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6ae9bab625e9ac8210953a7363167d6deaf194ec
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6b6a9a2ecc635bd8d76b00b64aeb6297e04683b6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/6b6a9a2ecc635bd8d76b00b64aeb6297e04683b6
new file mode 100644
index 0000000000..0260dc8117
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6b6a9a2ecc635bd8d76b00b64aeb6297e04683b6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6bddcd6ce1ff68320e3cc62bc215acf04de36ed2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/6bddcd6ce1ff68320e3cc62bc215acf04de36ed2
new file mode 100644
index 0000000000..ec41272052
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6bddcd6ce1ff68320e3cc62bc215acf04de36ed2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6c3c3119fabe838b2600e24651931f3012338e3b b/test/core/end2end/fuzzers/api_fuzzer_corpus/6c3c3119fabe838b2600e24651931f3012338e3b
new file mode 100644
index 0000000000..d0d5a8db40
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6c3c3119fabe838b2600e24651931f3012338e3b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6cb9930369caf7584015d3a17c37e144d23b79ce b/test/core/end2end/fuzzers/api_fuzzer_corpus/6cb9930369caf7584015d3a17c37e144d23b79ce
new file mode 100644
index 0000000000..788cac3b7d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6cb9930369caf7584015d3a17c37e144d23b79ce
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6f72c05f90d289ad239cff682d8e911cbbb416dc b/test/core/end2end/fuzzers/api_fuzzer_corpus/6f72c05f90d289ad239cff682d8e911cbbb416dc
new file mode 100644
index 0000000000..e177dd5d4c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6f72c05f90d289ad239cff682d8e911cbbb416dc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6f93d27e20d9158285cdc0193757daa2e34190b1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/6f93d27e20d9158285cdc0193757daa2e34190b1
new file mode 100644
index 0000000000..d1c3c89e97
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6f93d27e20d9158285cdc0193757daa2e34190b1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/6fc72a2c1ff9a11539ae35b197a79786496c2257 b/test/core/end2end/fuzzers/api_fuzzer_corpus/6fc72a2c1ff9a11539ae35b197a79786496c2257
new file mode 100644
index 0000000000..a88e82f910
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/6fc72a2c1ff9a11539ae35b197a79786496c2257
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7025657232cd9bcb8fcd6edebdff268cf8e74db8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7025657232cd9bcb8fcd6edebdff268cf8e74db8
new file mode 100644
index 0000000000..bab9287c18
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7025657232cd9bcb8fcd6edebdff268cf8e74db8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7108fee873f0120d41f469944cf1e24bd33ad684 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7108fee873f0120d41f469944cf1e24bd33ad684
new file mode 100644
index 0000000000..8c7ac1e87e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7108fee873f0120d41f469944cf1e24bd33ad684
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/713f66791d0f23b7b7b0ec9c40b6d51f7b214c9a b/test/core/end2end/fuzzers/api_fuzzer_corpus/713f66791d0f23b7b7b0ec9c40b6d51f7b214c9a
new file mode 100644
index 0000000000..a05e04b315
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/713f66791d0f23b7b7b0ec9c40b6d51f7b214c9a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/71ef778b5cb623be033026d5a6968e49a9581dc2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/71ef778b5cb623be033026d5a6968e49a9581dc2
new file mode 100644
index 0000000000..691dc5b52a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/71ef778b5cb623be033026d5a6968e49a9581dc2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/72205156cfb4fe412e4838b771dc9c9a8f1441d1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/72205156cfb4fe412e4838b771dc9c9a8f1441d1
new file mode 100644
index 0000000000..14ec62d50b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/72205156cfb4fe412e4838b771dc9c9a8f1441d1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/72b0bead5c0425173f696ff8efd7c726dcc4ecf8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/72b0bead5c0425173f696ff8efd7c726dcc4ecf8
new file mode 100644
index 0000000000..33699a1642
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/72b0bead5c0425173f696ff8efd7c726dcc4ecf8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/72c747d699af2733d0b93e6fa7afa0f88d05eed7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/72c747d699af2733d0b93e6fa7afa0f88d05eed7
new file mode 100644
index 0000000000..b229d992b0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/72c747d699af2733d0b93e6fa7afa0f88d05eed7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7365085e946d2c950beafa73b8631b82010acaed b/test/core/end2end/fuzzers/api_fuzzer_corpus/7365085e946d2c950beafa73b8631b82010acaed
new file mode 100644
index 0000000000..05016a08d7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7365085e946d2c950beafa73b8631b82010acaed
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/73b467524ba4f55fd030be6b0602389b9af4fa1a b/test/core/end2end/fuzzers/api_fuzzer_corpus/73b467524ba4f55fd030be6b0602389b9af4fa1a
new file mode 100644
index 0000000000..c61bcdbb68
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/73b467524ba4f55fd030be6b0602389b9af4fa1a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/73c6386046061350e70fbd846e7dba1428a43857 b/test/core/end2end/fuzzers/api_fuzzer_corpus/73c6386046061350e70fbd846e7dba1428a43857
new file mode 100644
index 0000000000..7f88c5b78d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/73c6386046061350e70fbd846e7dba1428a43857
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7436e1a9a62ad1f40320da321698477ed8f2b577 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7436e1a9a62ad1f40320da321698477ed8f2b577
new file mode 100644
index 0000000000..aa000d2b46
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7436e1a9a62ad1f40320da321698477ed8f2b577
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7515e494e0ac5d2d3b53151b3d10bfcf81578c99 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7515e494e0ac5d2d3b53151b3d10bfcf81578c99
new file mode 100644
index 0000000000..21fe9c66b0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7515e494e0ac5d2d3b53151b3d10bfcf81578c99
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/75652d3d4f913e10f7edef130e3d82a03b82247f b/test/core/end2end/fuzzers/api_fuzzer_corpus/75652d3d4f913e10f7edef130e3d82a03b82247f
new file mode 100644
index 0000000000..0c0f4bec79
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/75652d3d4f913e10f7edef130e3d82a03b82247f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/75aa409bfe540a3ad31f8bc504131eb41128404d b/test/core/end2end/fuzzers/api_fuzzer_corpus/75aa409bfe540a3ad31f8bc504131eb41128404d
new file mode 100644
index 0000000000..f5d12de8cd
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/75aa409bfe540a3ad31f8bc504131eb41128404d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/764deb515100de2b3d375d2689fd2c9e55eb8cd6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/764deb515100de2b3d375d2689fd2c9e55eb8cd6
new file mode 100644
index 0000000000..8d9345b813
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/764deb515100de2b3d375d2689fd2c9e55eb8cd6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7697d76245fff3d4a58fb04745c2a6197c9eeb54 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7697d76245fff3d4a58fb04745c2a6197c9eeb54
new file mode 100644
index 0000000000..655ec84849
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7697d76245fff3d4a58fb04745c2a6197c9eeb54
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/76ecc734e931672cb80c9b9e31ebe5ec552bb126 b/test/core/end2end/fuzzers/api_fuzzer_corpus/76ecc734e931672cb80c9b9e31ebe5ec552bb126
new file mode 100644
index 0000000000..780d885c23
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/76ecc734e931672cb80c9b9e31ebe5ec552bb126
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/76fc91359df03ef449e35588909eb949e05d50d5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/76fc91359df03ef449e35588909eb949e05d50d5
new file mode 100644
index 0000000000..82da364190
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/76fc91359df03ef449e35588909eb949e05d50d5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/77662d88e025c080212dd2dc4dd2030810926f40 b/test/core/end2end/fuzzers/api_fuzzer_corpus/77662d88e025c080212dd2dc4dd2030810926f40
new file mode 100644
index 0000000000..4872eb645c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/77662d88e025c080212dd2dc4dd2030810926f40
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/77dfcf5329baff3430c0bb270ee43fcf6b216238 b/test/core/end2end/fuzzers/api_fuzzer_corpus/77dfcf5329baff3430c0bb270ee43fcf6b216238
new file mode 100644
index 0000000000..ff0f3210f0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/77dfcf5329baff3430c0bb270ee43fcf6b216238
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/798e448161e03d40712655f913464a276b6d6129 b/test/core/end2end/fuzzers/api_fuzzer_corpus/798e448161e03d40712655f913464a276b6d6129
new file mode 100644
index 0000000000..89637b77cf
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/798e448161e03d40712655f913464a276b6d6129
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/79b2bfe9fcf1eab62e921dcc2f64b778d34802d8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/79b2bfe9fcf1eab62e921dcc2f64b778d34802d8
new file mode 100644
index 0000000000..999a861cee
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/79b2bfe9fcf1eab62e921dcc2f64b778d34802d8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/79da19253d7fea59733d2a5276bb393918f014d1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/79da19253d7fea59733d2a5276bb393918f014d1
new file mode 100644
index 0000000000..3e8f4e2f26
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/79da19253d7fea59733d2a5276bb393918f014d1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7a17b28c4e274868a9f9a8430ddd12d07221396e b/test/core/end2end/fuzzers/api_fuzzer_corpus/7a17b28c4e274868a9f9a8430ddd12d07221396e
new file mode 100644
index 0000000000..367ae401b8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7a17b28c4e274868a9f9a8430ddd12d07221396e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7a5a769942efac79863bb154cf1e7574e6d98e22 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7a5a769942efac79863bb154cf1e7574e6d98e22
new file mode 100644
index 0000000000..d48c5b5df9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7a5a769942efac79863bb154cf1e7574e6d98e22
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7aabe800afb737ea6e5e6068d89c76fdbfd448d0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7aabe800afb737ea6e5e6068d89c76fdbfd448d0
new file mode 100644
index 0000000000..36fd4e7f30
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7aabe800afb737ea6e5e6068d89c76fdbfd448d0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7ac32e7febefac7cda0a019b2b9276b97bb91c4a b/test/core/end2end/fuzzers/api_fuzzer_corpus/7ac32e7febefac7cda0a019b2b9276b97bb91c4a
new file mode 100644
index 0000000000..7e98c40464
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7ac32e7febefac7cda0a019b2b9276b97bb91c4a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7b1ad173c2ce60dd9f82143be5db1cbd317f8a6e b/test/core/end2end/fuzzers/api_fuzzer_corpus/7b1ad173c2ce60dd9f82143be5db1cbd317f8a6e
new file mode 100644
index 0000000000..afb0039b61
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7b1ad173c2ce60dd9f82143be5db1cbd317f8a6e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7b747e0fabbfae7ecb4e9e8261121aaa42a21cc2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7b747e0fabbfae7ecb4e9e8261121aaa42a21cc2
new file mode 100644
index 0000000000..332ba8647a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7b747e0fabbfae7ecb4e9e8261121aaa42a21cc2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7bd868f9aba4f89259c14358aff16d00114b2897 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7bd868f9aba4f89259c14358aff16d00114b2897
new file mode 100644
index 0000000000..1358115caf
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7bd868f9aba4f89259c14358aff16d00114b2897
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7c9b85db0b4648d13fd8a0de2de9bebdba555fa8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/7c9b85db0b4648d13fd8a0de2de9bebdba555fa8
new file mode 100644
index 0000000000..d8f69eb0e9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7c9b85db0b4648d13fd8a0de2de9bebdba555fa8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/7fe27d0f43c09c4070f479163e1479440c4bc7cc b/test/core/end2end/fuzzers/api_fuzzer_corpus/7fe27d0f43c09c4070f479163e1479440c4bc7cc
new file mode 100644
index 0000000000..5faa61a047
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/7fe27d0f43c09c4070f479163e1479440c4bc7cc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/801f08f6085a2986fb868d326c71bdcb16df1481 b/test/core/end2end/fuzzers/api_fuzzer_corpus/801f08f6085a2986fb868d326c71bdcb16df1481
new file mode 100644
index 0000000000..ced2c9450a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/801f08f6085a2986fb868d326c71bdcb16df1481
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/8102033256a24f00a59a0f23640d379eaeaba37d b/test/core/end2end/fuzzers/api_fuzzer_corpus/8102033256a24f00a59a0f23640d379eaeaba37d
new file mode 100644
index 0000000000..2804149178
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/8102033256a24f00a59a0f23640d379eaeaba37d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/815f39659d787ccae06bc7d1e0564525c27b9b79 b/test/core/end2end/fuzzers/api_fuzzer_corpus/815f39659d787ccae06bc7d1e0564525c27b9b79
new file mode 100644
index 0000000000..900119a143
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/815f39659d787ccae06bc7d1e0564525c27b9b79
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/816a1c7d02100fb495ab698923f8f4e550583e91 b/test/core/end2end/fuzzers/api_fuzzer_corpus/816a1c7d02100fb495ab698923f8f4e550583e91
new file mode 100644
index 0000000000..1d5b4daa9d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/816a1c7d02100fb495ab698923f8f4e550583e91
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/820b97903732cf20dae26cdba0717220fa042a49 b/test/core/end2end/fuzzers/api_fuzzer_corpus/820b97903732cf20dae26cdba0717220fa042a49
new file mode 100644
index 0000000000..f644cd8ae1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/820b97903732cf20dae26cdba0717220fa042a49
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/829a44d34a4c591b8808aa5eb283869e0fece45b b/test/core/end2end/fuzzers/api_fuzzer_corpus/829a44d34a4c591b8808aa5eb283869e0fece45b
new file mode 100644
index 0000000000..1c969eaae8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/829a44d34a4c591b8808aa5eb283869e0fece45b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/83371e1fa4720aae8035d7dc955d376678e102ef b/test/core/end2end/fuzzers/api_fuzzer_corpus/83371e1fa4720aae8035d7dc955d376678e102ef
new file mode 100644
index 0000000000..618ba3a818
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/83371e1fa4720aae8035d7dc955d376678e102ef
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/83566906d8ca1b2296d7d9042e1196a1cf69ab9c b/test/core/end2end/fuzzers/api_fuzzer_corpus/83566906d8ca1b2296d7d9042e1196a1cf69ab9c
new file mode 100644
index 0000000000..5739f9bc25
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/83566906d8ca1b2296d7d9042e1196a1cf69ab9c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/83b2491b16c26c0dbb6aef5a9df10a3fa83beea2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/83b2491b16c26c0dbb6aef5a9df10a3fa83beea2
new file mode 100644
index 0000000000..9d4b55cda4
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/83b2491b16c26c0dbb6aef5a9df10a3fa83beea2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/83b62e268ed5ffc26a1a97562e087791f46d3552 b/test/core/end2end/fuzzers/api_fuzzer_corpus/83b62e268ed5ffc26a1a97562e087791f46d3552
new file mode 100644
index 0000000000..4f537c6750
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/83b62e268ed5ffc26a1a97562e087791f46d3552
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/83df07a7e069d0932a221e28a2d47e449ca37c3f b/test/core/end2end/fuzzers/api_fuzzer_corpus/83df07a7e069d0932a221e28a2d47e449ca37c3f
new file mode 100644
index 0000000000..80838b875c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/83df07a7e069d0932a221e28a2d47e449ca37c3f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/840959b26ce65b833d488ebb7b1d8431839fe701 b/test/core/end2end/fuzzers/api_fuzzer_corpus/840959b26ce65b833d488ebb7b1d8431839fe701
new file mode 100644
index 0000000000..91ddac0076
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/840959b26ce65b833d488ebb7b1d8431839fe701
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/84316630fa8962f4753dda6e6c75625c47d19675 b/test/core/end2end/fuzzers/api_fuzzer_corpus/84316630fa8962f4753dda6e6c75625c47d19675
new file mode 100644
index 0000000000..1b6b1cae40
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/84316630fa8962f4753dda6e6c75625c47d19675
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/858a8d611419ced08aa85e89b75ff7baa1d9a791 b/test/core/end2end/fuzzers/api_fuzzer_corpus/858a8d611419ced08aa85e89b75ff7baa1d9a791
new file mode 100644
index 0000000000..f1ce8c1abe
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/858a8d611419ced08aa85e89b75ff7baa1d9a791
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/86bac2d397ae2c0c178171f1f9daf7a8603c6d7a b/test/core/end2end/fuzzers/api_fuzzer_corpus/86bac2d397ae2c0c178171f1f9daf7a8603c6d7a
new file mode 100644
index 0000000000..dae805b397
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/86bac2d397ae2c0c178171f1f9daf7a8603c6d7a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/87489d217ddd2fa2803947a38d66a9935f64fe63 b/test/core/end2end/fuzzers/api_fuzzer_corpus/87489d217ddd2fa2803947a38d66a9935f64fe63
new file mode 100644
index 0000000000..a6409f6fbe
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/87489d217ddd2fa2803947a38d66a9935f64fe63
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/879979038a496564beb9a0ae1d70cb20c7e6db75 b/test/core/end2end/fuzzers/api_fuzzer_corpus/879979038a496564beb9a0ae1d70cb20c7e6db75
new file mode 100644
index 0000000000..693172e72c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/879979038a496564beb9a0ae1d70cb20c7e6db75
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/882b03ed3abc37b43412e8396cdf3fb8b0eeb931 b/test/core/end2end/fuzzers/api_fuzzer_corpus/882b03ed3abc37b43412e8396cdf3fb8b0eeb931
new file mode 100644
index 0000000000..cacfa19f9e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/882b03ed3abc37b43412e8396cdf3fb8b0eeb931
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/885a929a4baa3d32ce354f4815476530122ff85d b/test/core/end2end/fuzzers/api_fuzzer_corpus/885a929a4baa3d32ce354f4815476530122ff85d
new file mode 100644
index 0000000000..d1e30ba888
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/885a929a4baa3d32ce354f4815476530122ff85d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/8892fb3ac741bd31d9181ea72dd948e1ee0b1b21 b/test/core/end2end/fuzzers/api_fuzzer_corpus/8892fb3ac741bd31d9181ea72dd948e1ee0b1b21
new file mode 100644
index 0000000000..fe3155adf3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/8892fb3ac741bd31d9181ea72dd948e1ee0b1b21
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/88cfd0e937486a6488e0e9f1fcd7ffeafcb4d6fb b/test/core/end2end/fuzzers/api_fuzzer_corpus/88cfd0e937486a6488e0e9f1fcd7ffeafcb4d6fb
new file mode 100644
index 0000000000..87d19743aa
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/88cfd0e937486a6488e0e9f1fcd7ffeafcb4d6fb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/89d8350297ce5dfc2a69e6e96afc86dba2bc3548 b/test/core/end2end/fuzzers/api_fuzzer_corpus/89d8350297ce5dfc2a69e6e96afc86dba2bc3548
new file mode 100644
index 0000000000..9674a2a26b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/89d8350297ce5dfc2a69e6e96afc86dba2bc3548
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/8a93c1f4fb3540901374100ee96dfb892bbbd767 b/test/core/end2end/fuzzers/api_fuzzer_corpus/8a93c1f4fb3540901374100ee96dfb892bbbd767
new file mode 100644
index 0000000000..be3a387133
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/8a93c1f4fb3540901374100ee96dfb892bbbd767
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/8b00c51372acb33d4714fd7e012749bf44cf7b3b b/test/core/end2end/fuzzers/api_fuzzer_corpus/8b00c51372acb33d4714fd7e012749bf44cf7b3b
new file mode 100644
index 0000000000..b0f6f5b7be
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/8b00c51372acb33d4714fd7e012749bf44cf7b3b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/8b37d35809a85ae26de6537b3a48da7b7b62bea8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/8b37d35809a85ae26de6537b3a48da7b7b62bea8
new file mode 100644
index 0000000000..9ff455c9a3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/8b37d35809a85ae26de6537b3a48da7b7b62bea8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/8d1242821c2d5fc81c8e0b397d91cf75cb1b5f2c b/test/core/end2end/fuzzers/api_fuzzer_corpus/8d1242821c2d5fc81c8e0b397d91cf75cb1b5f2c
new file mode 100644
index 0000000000..023bd1727e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/8d1242821c2d5fc81c8e0b397d91cf75cb1b5f2c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/904edc7bb14e4da0172f3d58a74c8abf141da9fb b/test/core/end2end/fuzzers/api_fuzzer_corpus/904edc7bb14e4da0172f3d58a74c8abf141da9fb
new file mode 100644
index 0000000000..678e8cc6c2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/904edc7bb14e4da0172f3d58a74c8abf141da9fb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/90a94b19bcf5aed7bfee94764acc906e889e47f8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/90a94b19bcf5aed7bfee94764acc906e889e47f8
new file mode 100644
index 0000000000..b3069df308
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/90a94b19bcf5aed7bfee94764acc906e889e47f8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/910246d4e894dbf88b09e9c1994e0f7bd563bcc5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/910246d4e894dbf88b09e9c1994e0f7bd563bcc5
new file mode 100644
index 0000000000..383ddbd06f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/910246d4e894dbf88b09e9c1994e0f7bd563bcc5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/913614cd0ae1b1210d2f1bc354b876080726f7a8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/913614cd0ae1b1210d2f1bc354b876080726f7a8
new file mode 100644
index 0000000000..bb417fce50
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/913614cd0ae1b1210d2f1bc354b876080726f7a8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/91434e8bf241b54d98e0f664a12ecf5c9d144a8d b/test/core/end2end/fuzzers/api_fuzzer_corpus/91434e8bf241b54d98e0f664a12ecf5c9d144a8d
new file mode 100644
index 0000000000..f13f5b9963
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/91434e8bf241b54d98e0f664a12ecf5c9d144a8d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9234bc18b3034e133fc3111f977f10d91f9d59b4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/9234bc18b3034e133fc3111f977f10d91f9d59b4
new file mode 100644
index 0000000000..7960f625e1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9234bc18b3034e133fc3111f977f10d91f9d59b4
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/92931bee49467ae7468775488a8c1651795f1b18 b/test/core/end2end/fuzzers/api_fuzzer_corpus/92931bee49467ae7468775488a8c1651795f1b18
new file mode 100644
index 0000000000..eb4a073f2e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/92931bee49467ae7468775488a8c1651795f1b18
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9597f6d2dbabda14eea4977e2156e3ace4ede00a b/test/core/end2end/fuzzers/api_fuzzer_corpus/9597f6d2dbabda14eea4977e2156e3ace4ede00a
new file mode 100644
index 0000000000..882e407524
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9597f6d2dbabda14eea4977e2156e3ace4ede00a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/982b2be980211b25a087a27ea5125f3788b5aa97 b/test/core/end2end/fuzzers/api_fuzzer_corpus/982b2be980211b25a087a27ea5125f3788b5aa97
new file mode 100644
index 0000000000..856cad5b8c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/982b2be980211b25a087a27ea5125f3788b5aa97
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9855bcd261c7b4e11d17bf4f7d4d527b53d3b71e b/test/core/end2end/fuzzers/api_fuzzer_corpus/9855bcd261c7b4e11d17bf4f7d4d527b53d3b71e
new file mode 100644
index 0000000000..1b46964d7a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9855bcd261c7b4e11d17bf4f7d4d527b53d3b71e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/99c05d9bb9dd3b8205330e5265bc7dd94bcf87de b/test/core/end2end/fuzzers/api_fuzzer_corpus/99c05d9bb9dd3b8205330e5265bc7dd94bcf87de
new file mode 100644
index 0000000000..64a7a100ee
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/99c05d9bb9dd3b8205330e5265bc7dd94bcf87de
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9af196d78bf8651de03ee495e4d115be490794cf b/test/core/end2end/fuzzers/api_fuzzer_corpus/9af196d78bf8651de03ee495e4d115be490794cf
new file mode 100644
index 0000000000..bb5e9beb58
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9af196d78bf8651de03ee495e4d115be490794cf
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9af5a1b29196f103190ab18c92704f7082c6b271 b/test/core/end2end/fuzzers/api_fuzzer_corpus/9af5a1b29196f103190ab18c92704f7082c6b271
new file mode 100644
index 0000000000..508ebec117
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9af5a1b29196f103190ab18c92704f7082c6b271
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9b48fd4471f6d515bed4bffa94a639365d395b99 b/test/core/end2end/fuzzers/api_fuzzer_corpus/9b48fd4471f6d515bed4bffa94a639365d395b99
new file mode 100644
index 0000000000..463512d3fe
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9b48fd4471f6d515bed4bffa94a639365d395b99
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9bdad64c1862a8d642f398bf7bb62e22a1cd4270 b/test/core/end2end/fuzzers/api_fuzzer_corpus/9bdad64c1862a8d642f398bf7bb62e22a1cd4270
new file mode 100644
index 0000000000..e93de73d28
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9bdad64c1862a8d642f398bf7bb62e22a1cd4270
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9db023b0a0d183149764d21e7f8b2b2990530848 b/test/core/end2end/fuzzers/api_fuzzer_corpus/9db023b0a0d183149764d21e7f8b2b2990530848
new file mode 100644
index 0000000000..b24db3eb44
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9db023b0a0d183149764d21e7f8b2b2990530848
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9e8e83f61559c6dcc7e870f7ccb3ab13f1224229 b/test/core/end2end/fuzzers/api_fuzzer_corpus/9e8e83f61559c6dcc7e870f7ccb3ab13f1224229
new file mode 100644
index 0000000000..c32a095630
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9e8e83f61559c6dcc7e870f7ccb3ab13f1224229
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9e92e4e30e68bf65fb59e9f34ed4967463212df9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/9e92e4e30e68bf65fb59e9f34ed4967463212df9
new file mode 100644
index 0000000000..5c88f5ee59
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9e92e4e30e68bf65fb59e9f34ed4967463212df9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9eeac17d6b28b8ab214d4164a49576ce500316dd b/test/core/end2end/fuzzers/api_fuzzer_corpus/9eeac17d6b28b8ab214d4164a49576ce500316dd
new file mode 100644
index 0000000000..2cec47ff1b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9eeac17d6b28b8ab214d4164a49576ce500316dd
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9ef6a972458b736cdcb1b875bf896104b3a1c74c b/test/core/end2end/fuzzers/api_fuzzer_corpus/9ef6a972458b736cdcb1b875bf896104b3a1c74c
new file mode 100644
index 0000000000..2fd38f498a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9ef6a972458b736cdcb1b875bf896104b3a1c74c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9fc918600ddb20914d93a0b979646b49530ce46d b/test/core/end2end/fuzzers/api_fuzzer_corpus/9fc918600ddb20914d93a0b979646b49530ce46d
new file mode 100644
index 0000000000..0566305cef
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/9fc918600ddb20914d93a0b979646b49530ce46d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a0290b63e02c1785b3cc80863343076a7f3e1a7b b/test/core/end2end/fuzzers/api_fuzzer_corpus/a0290b63e02c1785b3cc80863343076a7f3e1a7b
new file mode 100644
index 0000000000..0a9e0ef5a8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a0290b63e02c1785b3cc80863343076a7f3e1a7b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a083ea58077e52898ae8a9a4dedee4cf8de89229 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a083ea58077e52898ae8a9a4dedee4cf8de89229
new file mode 100644
index 0000000000..87c3df56f2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a083ea58077e52898ae8a9a4dedee4cf8de89229
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a1446ccd5f12ac05d1cd4fcbad5ce1d3a6cc7e96 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a1446ccd5f12ac05d1cd4fcbad5ce1d3a6cc7e96
new file mode 100644
index 0000000000..d2dfcc7804
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a1446ccd5f12ac05d1cd4fcbad5ce1d3a6cc7e96
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a2b9d39f9d1aa03f26b41f780c7a4f5ff826e6e1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a2b9d39f9d1aa03f26b41f780c7a4f5ff826e6e1
new file mode 100644
index 0000000000..d2e9966b38
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a2b9d39f9d1aa03f26b41f780c7a4f5ff826e6e1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a2eb6f5e20c5171e7144f177d296eb00181ce461 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a2eb6f5e20c5171e7144f177d296eb00181ce461
new file mode 100644
index 0000000000..0f8d768345
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a2eb6f5e20c5171e7144f177d296eb00181ce461
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a3469cc29207d27c818b2299bab7e7c5dde3ffaa b/test/core/end2end/fuzzers/api_fuzzer_corpus/a3469cc29207d27c818b2299bab7e7c5dde3ffaa
new file mode 100644
index 0000000000..45e17f5b7f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a3469cc29207d27c818b2299bab7e7c5dde3ffaa
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a3c40637baff1a88fe081a0768bfae5dc3942006 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a3c40637baff1a88fe081a0768bfae5dc3942006
new file mode 100644
index 0000000000..5bc6619b75
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a3c40637baff1a88fe081a0768bfae5dc3942006
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a404f3f4dbe1521cc977ed94ea50c49dbd6e32a2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a404f3f4dbe1521cc977ed94ea50c49dbd6e32a2
new file mode 100644
index 0000000000..00d6cb96a7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a404f3f4dbe1521cc977ed94ea50c49dbd6e32a2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a5089985010ccfa7630185464308aa5247f55de1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a5089985010ccfa7630185464308aa5247f55de1
new file mode 100644
index 0000000000..9a2d8e80c3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a5089985010ccfa7630185464308aa5247f55de1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a660e999019a7dd3e950b51d6fa8f453390fb504 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a660e999019a7dd3e950b51d6fa8f453390fb504
new file mode 100644
index 0000000000..0354317720
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a660e999019a7dd3e950b51d6fa8f453390fb504
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a675a6268dee809602632cddca94ea708473bba1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a675a6268dee809602632cddca94ea708473bba1
new file mode 100644
index 0000000000..279d9d141f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a675a6268dee809602632cddca94ea708473bba1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a736ade657d046ea859cf50fe1ef044e02ca38e5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a736ade657d046ea859cf50fe1ef044e02ca38e5
new file mode 100644
index 0000000000..bcdcc31d21
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a736ade657d046ea859cf50fe1ef044e02ca38e5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a85197b7cf312c8df9701404af23088f8681313d b/test/core/end2end/fuzzers/api_fuzzer_corpus/a85197b7cf312c8df9701404af23088f8681313d
new file mode 100644
index 0000000000..307fdb6d05
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a85197b7cf312c8df9701404af23088f8681313d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a89d59f59e43670ca3e8baf454fea723ae295653 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a89d59f59e43670ca3e8baf454fea723ae295653
new file mode 100644
index 0000000000..9aacad1cff
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a89d59f59e43670ca3e8baf454fea723ae295653
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a8be97dcf19ed2a7786763b4edfb48ca7f2790f6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a8be97dcf19ed2a7786763b4edfb48ca7f2790f6
new file mode 100644
index 0000000000..f5a9d6bf77
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a8be97dcf19ed2a7786763b4edfb48ca7f2790f6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a8c9f7043c578e48be49661be5207ceb9ec1b61f b/test/core/end2end/fuzzers/api_fuzzer_corpus/a8c9f7043c578e48be49661be5207ceb9ec1b61f
new file mode 100644
index 0000000000..5d6ce5b177
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a8c9f7043c578e48be49661be5207ceb9ec1b61f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a9772b34aba5938ee56f517134db801a158f2849 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a9772b34aba5938ee56f517134db801a158f2849
new file mode 100644
index 0000000000..e26aba71b9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/a9772b34aba5938ee56f517134db801a158f2849
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ab48d54113cb27083943467533d1872ec13da0e7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ab48d54113cb27083943467533d1872ec13da0e7
new file mode 100644
index 0000000000..6e7e2f2f6d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ab48d54113cb27083943467533d1872ec13da0e7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ac386c17e9e82472939d4052ff7959aeb1d5dea0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ac386c17e9e82472939d4052ff7959aeb1d5dea0
new file mode 100644
index 0000000000..1b5056f1e9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ac386c17e9e82472939d4052ff7959aeb1d5dea0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ac59c58dd4b05b6e3c4bae4db3b39f44d12a60db b/test/core/end2end/fuzzers/api_fuzzer_corpus/ac59c58dd4b05b6e3c4bae4db3b39f44d12a60db
new file mode 100644
index 0000000000..222d80aea3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ac59c58dd4b05b6e3c4bae4db3b39f44d12a60db
@@ -0,0 +1 @@
+ë
\ No newline at end of file
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ac7b2971ff39a368145148524511dd68df83d522 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ac7b2971ff39a368145148524511dd68df83d522
new file mode 100644
index 0000000000..3010cc7830
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ac7b2971ff39a368145148524511dd68df83d522
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/adf1ecc62e1089054db8af9e380cd77323b62970 b/test/core/end2end/fuzzers/api_fuzzer_corpus/adf1ecc62e1089054db8af9e380cd77323b62970
new file mode 100644
index 0000000000..58f024ac77
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/adf1ecc62e1089054db8af9e380cd77323b62970
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/aee8da0d3f1d4f3c54bfefb5d53df17c6740fb37 b/test/core/end2end/fuzzers/api_fuzzer_corpus/aee8da0d3f1d4f3c54bfefb5d53df17c6740fb37
new file mode 100644
index 0000000000..a0467c9954
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/aee8da0d3f1d4f3c54bfefb5d53df17c6740fb37
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/af321dcdfe085aae585cf48f59b51233b60df59b b/test/core/end2end/fuzzers/api_fuzzer_corpus/af321dcdfe085aae585cf48f59b51233b60df59b
new file mode 100644
index 0000000000..dd42bd9f84
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/af321dcdfe085aae585cf48f59b51233b60df59b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/afd047f5586f07990fa2efd6c67d3a7c55099c53 b/test/core/end2end/fuzzers/api_fuzzer_corpus/afd047f5586f07990fa2efd6c67d3a7c55099c53
new file mode 100644
index 0000000000..e29916e828
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/afd047f5586f07990fa2efd6c67d3a7c55099c53
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/afd6dab057fcf62e73429067d983a5f442f3a70e b/test/core/end2end/fuzzers/api_fuzzer_corpus/afd6dab057fcf62e73429067d983a5f442f3a70e
new file mode 100644
index 0000000000..6be4908444
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/afd6dab057fcf62e73429067d983a5f442f3a70e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b129aaeced0d135d8431960a3b3f85bef20f552b b/test/core/end2end/fuzzers/api_fuzzer_corpus/b129aaeced0d135d8431960a3b3f85bef20f552b
new file mode 100644
index 0000000000..11b84e619a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b129aaeced0d135d8431960a3b3f85bef20f552b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b2d1b3137b5ecdc255a76bf6206ed21ea927b6b0 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b2d1b3137b5ecdc255a76bf6206ed21ea927b6b0
new file mode 100644
index 0000000000..054a1def84
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b2d1b3137b5ecdc255a76bf6206ed21ea927b6b0
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b3776ef844b4910a2cd6d149dc13fb57bd523ac3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b3776ef844b4910a2cd6d149dc13fb57bd523ac3
new file mode 100644
index 0000000000..7ecb9e4847
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b3776ef844b4910a2cd6d149dc13fb57bd523ac3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b378146c4a1b41bd16319156c653534f1e391c7d b/test/core/end2end/fuzzers/api_fuzzer_corpus/b378146c4a1b41bd16319156c653534f1e391c7d
new file mode 100644
index 0000000000..6818b6fa33
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b378146c4a1b41bd16319156c653534f1e391c7d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b536cad032468c127123ee059efe977f7fe6894d b/test/core/end2end/fuzzers/api_fuzzer_corpus/b536cad032468c127123ee059efe977f7fe6894d
new file mode 100644
index 0000000000..6729d41487
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b536cad032468c127123ee059efe977f7fe6894d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b5efe698d1ee1d878ef6db9a19d5f7c951514fae b/test/core/end2end/fuzzers/api_fuzzer_corpus/b5efe698d1ee1d878ef6db9a19d5f7c951514fae
new file mode 100644
index 0000000000..58e369ee1f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b5efe698d1ee1d878ef6db9a19d5f7c951514fae
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b70abef1bf2c649cf31720136a099a88cff8d562 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b70abef1bf2c649cf31720136a099a88cff8d562
new file mode 100644
index 0000000000..d24d80ed32
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b70abef1bf2c649cf31720136a099a88cff8d562
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b7ad6cf88b52c0d558ef6a122c67b7807a659f36 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b7ad6cf88b52c0d558ef6a122c67b7807a659f36
new file mode 100644
index 0000000000..4f5834334a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b7ad6cf88b52c0d558ef6a122c67b7807a659f36
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b7ce7c97e81ecd2db09491172235b43340f4b352 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b7ce7c97e81ecd2db09491172235b43340f4b352
new file mode 100644
index 0000000000..df5aef3b4f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b7ce7c97e81ecd2db09491172235b43340f4b352
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b86f7032cb6eae67d834bde583597ba802f5d252 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b86f7032cb6eae67d834bde583597ba802f5d252
new file mode 100644
index 0000000000..95b0321922
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b86f7032cb6eae67d834bde583597ba802f5d252
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b8f18df0db1484d024e41f58d15e8afb710b35ee b/test/core/end2end/fuzzers/api_fuzzer_corpus/b8f18df0db1484d024e41f58d15e8afb710b35ee
new file mode 100644
index 0000000000..46d3d02787
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b8f18df0db1484d024e41f58d15e8afb710b35ee
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b94cf6089a6e37c5aaac27741d61f71bbb7eeee7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b94cf6089a6e37c5aaac27741d61f71bbb7eeee7
new file mode 100644
index 0000000000..6d39b17230
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/b94cf6089a6e37c5aaac27741d61f71bbb7eeee7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ba73b25c18f6fa6aeca8fca834852d3750b079d1 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ba73b25c18f6fa6aeca8fca834852d3750b079d1
new file mode 100644
index 0000000000..e664af3dfd
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ba73b25c18f6fa6aeca8fca834852d3750b079d1
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ba8c20002a96d94f326dcc9a83c58241d35091c3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ba8c20002a96d94f326dcc9a83c58241d35091c3
new file mode 100644
index 0000000000..41a1b6684b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ba8c20002a96d94f326dcc9a83c58241d35091c3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/bab597264c721da916f0245906c4c471547aba89 b/test/core/end2end/fuzzers/api_fuzzer_corpus/bab597264c721da916f0245906c4c471547aba89
new file mode 100644
index 0000000000..e6b5a5340b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/bab597264c721da916f0245906c4c471547aba89
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/bae341809e6f5bfa1d24064e2d5adc2c793f4240 b/test/core/end2end/fuzzers/api_fuzzer_corpus/bae341809e6f5bfa1d24064e2d5adc2c793f4240
new file mode 100644
index 0000000000..6b24c09b08
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/bae341809e6f5bfa1d24064e2d5adc2c793f4240
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/bb36649f74dfe7113fd1391f24d490ceae8f9b21 b/test/core/end2end/fuzzers/api_fuzzer_corpus/bb36649f74dfe7113fd1391f24d490ceae8f9b21
new file mode 100644
index 0000000000..8bc9a9b833
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/bb36649f74dfe7113fd1391f24d490ceae8f9b21
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/bccdc1e95be1de56746e95d167a24ba805f9172a b/test/core/end2end/fuzzers/api_fuzzer_corpus/bccdc1e95be1de56746e95d167a24ba805f9172a
new file mode 100644
index 0000000000..d28de5065a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/bccdc1e95be1de56746e95d167a24ba805f9172a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/be53fc99a0c00fb2172b6960389a78b2e2a55b4c b/test/core/end2end/fuzzers/api_fuzzer_corpus/be53fc99a0c00fb2172b6960389a78b2e2a55b4c
new file mode 100644
index 0000000000..32fe875d90
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/be53fc99a0c00fb2172b6960389a78b2e2a55b4c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c059728bdb63747b6ebb3e345ac4c5ec5f8363af b/test/core/end2end/fuzzers/api_fuzzer_corpus/c059728bdb63747b6ebb3e345ac4c5ec5f8363af
new file mode 100644
index 0000000000..8ad5a94bb2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c059728bdb63747b6ebb3e345ac4c5ec5f8363af
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c08401badfe37023ba5e0e751d022616fcbefcbb b/test/core/end2end/fuzzers/api_fuzzer_corpus/c08401badfe37023ba5e0e751d022616fcbefcbb
new file mode 100644
index 0000000000..0403c89e0c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c08401badfe37023ba5e0e751d022616fcbefcbb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c2006fdf68d2a4cc0b31410d00e4dfca59315e85 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c2006fdf68d2a4cc0b31410d00e4dfca59315e85
new file mode 100644
index 0000000000..243f8bcb72
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c2006fdf68d2a4cc0b31410d00e4dfca59315e85
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c200cd4190048ba3b72b76274b2976b04110efc9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c200cd4190048ba3b72b76274b2976b04110efc9
new file mode 100644
index 0000000000..7f2e81e779
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c200cd4190048ba3b72b76274b2976b04110efc9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c27d7d33b13570c014385799dddf1d8805fc1735 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c27d7d33b13570c014385799dddf1d8805fc1735
new file mode 100644
index 0000000000..b8b2b7e3c1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c27d7d33b13570c014385799dddf1d8805fc1735
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c39dab787a7c73972a3cbd69fef3775f55c90639 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c39dab787a7c73972a3cbd69fef3775f55c90639
new file mode 100644
index 0000000000..ae586b37cd
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c39dab787a7c73972a3cbd69fef3775f55c90639
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c467053b901e28634f7e7891ea361961d94b097b b/test/core/end2end/fuzzers/api_fuzzer_corpus/c467053b901e28634f7e7891ea361961d94b097b
new file mode 100644
index 0000000000..d224342f3e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c467053b901e28634f7e7891ea361961d94b097b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c54b7c1255412a6d4e9608d14fbdb235a7a86d9d b/test/core/end2end/fuzzers/api_fuzzer_corpus/c54b7c1255412a6d4e9608d14fbdb235a7a86d9d
new file mode 100644
index 0000000000..6afe2ffe51
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c54b7c1255412a6d4e9608d14fbdb235a7a86d9d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c5590a6799d6633ba08cc1f75e1a7d0a54d37e68 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5590a6799d6633ba08cc1f75e1a7d0a54d37e68
new file mode 100644
index 0000000000..bf5354659b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5590a6799d6633ba08cc1f75e1a7d0a54d37e68
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c58819f4e12e3ee2ce3adb89b6f93567db2d5c8a b/test/core/end2end/fuzzers/api_fuzzer_corpus/c58819f4e12e3ee2ce3adb89b6f93567db2d5c8a
new file mode 100644
index 0000000000..7efdb3cbc8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c58819f4e12e3ee2ce3adb89b6f93567db2d5c8a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c5dbc50d9174bde5542b2bb18c63f6583a23ff13 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5dbc50d9174bde5542b2bb18c63f6583a23ff13
new file mode 100644
index 0000000000..5ca351764e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5dbc50d9174bde5542b2bb18c63f6583a23ff13
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c5f36039c543bb52b1b2ad235934790c4c34dccd b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5f36039c543bb52b1b2ad235934790c4c34dccd
new file mode 100644
index 0000000000..1eca7b3e24
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5f36039c543bb52b1b2ad235934790c4c34dccd
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c5f3e7e54fb624b5f5436e1101fb8dd74d2dac19 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5f3e7e54fb624b5f5436e1101fb8dd74d2dac19
new file mode 100644
index 0000000000..4beefe1716
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c5f3e7e54fb624b5f5436e1101fb8dd74d2dac19
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c604f2a6f2a3c2f38e8cf0ce99c78e2750a83454 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c604f2a6f2a3c2f38e8cf0ce99c78e2750a83454
new file mode 100644
index 0000000000..0420324d5c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c604f2a6f2a3c2f38e8cf0ce99c78e2750a83454
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c60e077197a6659e362fba14ff9e4eacee647674 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c60e077197a6659e362fba14ff9e4eacee647674
new file mode 100644
index 0000000000..9b79bf917e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c60e077197a6659e362fba14ff9e4eacee647674
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c649b5285bd40e0614cb8b8b4001b80c3d3cb4a5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c649b5285bd40e0614cb8b8b4001b80c3d3cb4a5
new file mode 100644
index 0000000000..c068317756
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c649b5285bd40e0614cb8b8b4001b80c3d3cb4a5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c6932577ed27915bf469939c61b1283354308a68 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c6932577ed27915bf469939c61b1283354308a68
new file mode 100644
index 0000000000..10878a8867
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c6932577ed27915bf469939c61b1283354308a68
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c8ccc96fa43f1446ca99e81e7440a3542b3a6ee2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c8ccc96fa43f1446ca99e81e7440a3542b3a6ee2
new file mode 100644
index 0000000000..4d384388a3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c8ccc96fa43f1446ca99e81e7440a3542b3a6ee2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c8e01950d56d7c8d08a5cce94c6306c03a135219 b/test/core/end2end/fuzzers/api_fuzzer_corpus/c8e01950d56d7c8d08a5cce94c6306c03a135219
new file mode 100644
index 0000000000..668f27280b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c8e01950d56d7c8d08a5cce94c6306c03a135219
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c8e12ea9590ffbf0d6a10a582338856fa217ff6d b/test/core/end2end/fuzzers/api_fuzzer_corpus/c8e12ea9590ffbf0d6a10a582338856fa217ff6d
new file mode 100644
index 0000000000..59fa524f11
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c8e12ea9590ffbf0d6a10a582338856fa217ff6d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/c90aaaf79d46aeaf533e62dab54506d8ab2a3e5f b/test/core/end2end/fuzzers/api_fuzzer_corpus/c90aaaf79d46aeaf533e62dab54506d8ab2a3e5f
new file mode 100644
index 0000000000..2fc14daec9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/c90aaaf79d46aeaf533e62dab54506d8ab2a3e5f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ca54a837cfaf7edc71961ff1fe52d4c3cd86675e b/test/core/end2end/fuzzers/api_fuzzer_corpus/ca54a837cfaf7edc71961ff1fe52d4c3cd86675e
new file mode 100644
index 0000000000..4ee9fbce3c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ca54a837cfaf7edc71961ff1fe52d4c3cd86675e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cae359a6dabcf11786350360c2cd2aebf0b7a094 b/test/core/end2end/fuzzers/api_fuzzer_corpus/cae359a6dabcf11786350360c2cd2aebf0b7a094
new file mode 100644
index 0000000000..e087ae9c90
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cae359a6dabcf11786350360c2cd2aebf0b7a094
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cba1122fd86ce20b417cb34edc294f19f1303faa b/test/core/end2end/fuzzers/api_fuzzer_corpus/cba1122fd86ce20b417cb34edc294f19f1303faa
new file mode 100644
index 0000000000..c108108ae2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cba1122fd86ce20b417cb34edc294f19f1303faa
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cbace6de751ef04cd6c12f74f37c5bb3e3b0b219 b/test/core/end2end/fuzzers/api_fuzzer_corpus/cbace6de751ef04cd6c12f74f37c5bb3e3b0b219
new file mode 100644
index 0000000000..d6644837c2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cbace6de751ef04cd6c12f74f37c5bb3e3b0b219
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cbd7f8b4148a1cac0c012afd3c73baade2dc572c b/test/core/end2end/fuzzers/api_fuzzer_corpus/cbd7f8b4148a1cac0c012afd3c73baade2dc572c
new file mode 100644
index 0000000000..d7b13af8ef
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cbd7f8b4148a1cac0c012afd3c73baade2dc572c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cbde71efff4119c58459a93b2e1692182521b960 b/test/core/end2end/fuzzers/api_fuzzer_corpus/cbde71efff4119c58459a93b2e1692182521b960
new file mode 100644
index 0000000000..8e2bde7965
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cbde71efff4119c58459a93b2e1692182521b960
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cc1b857893cf971cf7783d53d25693e642b03eff b/test/core/end2end/fuzzers/api_fuzzer_corpus/cc1b857893cf971cf7783d53d25693e642b03eff
new file mode 100644
index 0000000000..9e76df81dd
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cc1b857893cf971cf7783d53d25693e642b03eff
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cd5982304e5979e6056a77c4053b232e0963e0e5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/cd5982304e5979e6056a77c4053b232e0963e0e5
new file mode 100644
index 0000000000..6cbfa3742a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cd5982304e5979e6056a77c4053b232e0963e0e5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ce72561eada7f9b9e8b0f0e658ccebb4f5b983d6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ce72561eada7f9b9e8b0f0e658ccebb4f5b983d6
new file mode 100644
index 0000000000..b3cc41b46a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ce72561eada7f9b9e8b0f0e658ccebb4f5b983d6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ce95d2fc5b099365cd781aa7e2b297ac92a215b3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ce95d2fc5b099365cd781aa7e2b297ac92a215b3
new file mode 100644
index 0000000000..8b87565221
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ce95d2fc5b099365cd781aa7e2b297ac92a215b3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/cf3fd86be6611e52e7a3faefd2d1e0082c3a8859 b/test/core/end2end/fuzzers/api_fuzzer_corpus/cf3fd86be6611e52e7a3faefd2d1e0082c3a8859
new file mode 100644
index 0000000000..c7f79aa7a2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/cf3fd86be6611e52e7a3faefd2d1e0082c3a8859
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-0597bbdd657fa4ed14443994c9147a1a7bbc205f b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-0597bbdd657fa4ed14443994c9147a1a7bbc205f
new file mode 100644
index 0000000000..732f3d7297
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-0597bbdd657fa4ed14443994c9147a1a7bbc205f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-0f6e7b5dd0ad53297bd9daa497dbf851b5385b16 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-0f6e7b5dd0ad53297bd9daa497dbf851b5385b16
new file mode 100644
index 0000000000..db9e033743
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-0f6e7b5dd0ad53297bd9daa497dbf851b5385b16
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-113a1e09a1c0787f1be875c6cdcf4415f8155ee3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-113a1e09a1c0787f1be875c6cdcf4415f8155ee3
new file mode 100644
index 0000000000..b1dbcfac7a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-113a1e09a1c0787f1be875c6cdcf4415f8155ee3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-168a72ed6115591c637fe99f50cac5e6bf7ded79 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-168a72ed6115591c637fe99f50cac5e6bf7ded79
new file mode 100644
index 0000000000..f8c164a8d4
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-168a72ed6115591c637fe99f50cac5e6bf7ded79
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-17ad251e24eaa152ded652bfe04d656fdcad28c4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-17ad251e24eaa152ded652bfe04d656fdcad28c4
new file mode 100644
index 0000000000..094f82a0b4
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-17ad251e24eaa152ded652bfe04d656fdcad28c4
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-17c0775f8b51f7b8742602e4321ac5827e64e3eb b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-17c0775f8b51f7b8742602e4321ac5827e64e3eb
new file mode 100644
index 0000000000..04c21e0fba
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-17c0775f8b51f7b8742602e4321ac5827e64e3eb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-1bf04a83c67f216c7643d69677da5e6cbc708d88 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-1bf04a83c67f216c7643d69677da5e6cbc708d88
new file mode 100644
index 0000000000..3b36cb8a1e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-1bf04a83c67f216c7643d69677da5e6cbc708d88
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-23a35ebad0178cc632fd62f6852d2f6fa5d1fe32 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-23a35ebad0178cc632fd62f6852d2f6fa5d1fe32
new file mode 100644
index 0000000000..e487b5f04a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-23a35ebad0178cc632fd62f6852d2f6fa5d1fe32
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-24bb600e0530fcce70d21fece0cd70056ed8a6b9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-24bb600e0530fcce70d21fece0cd70056ed8a6b9
new file mode 100644
index 0000000000..399a5afac5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-24bb600e0530fcce70d21fece0cd70056ed8a6b9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-278279ec7b937b1c944029bc57ae0ff0fbb13415 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-278279ec7b937b1c944029bc57ae0ff0fbb13415
new file mode 100644
index 0000000000..2574788990
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-278279ec7b937b1c944029bc57ae0ff0fbb13415
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-2cc124fe461b11185467384aebe18711f28bcfb7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-2cc124fe461b11185467384aebe18711f28bcfb7
new file mode 100644
index 0000000000..8606eec49c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-2cc124fe461b11185467384aebe18711f28bcfb7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-3699c47aaa794b48df814bd3b5a982c377063bc7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-3699c47aaa794b48df814bd3b5a982c377063bc7
new file mode 100644
index 0000000000..3807931fba
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-3699c47aaa794b48df814bd3b5a982c377063bc7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-404a40c85b887a53235484f4620da325872eca49 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-404a40c85b887a53235484f4620da325872eca49
new file mode 100644
index 0000000000..c98b973303
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-404a40c85b887a53235484f4620da325872eca49
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4195e7f3655955a8b386d1b17ab855c08ebec548 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4195e7f3655955a8b386d1b17ab855c08ebec548
new file mode 100644
index 0000000000..c39d4fc948
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4195e7f3655955a8b386d1b17ab855c08ebec548
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-41ad52e1376596e9ac3c22be039975e223645b4a b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-41ad52e1376596e9ac3c22be039975e223645b4a
new file mode 100644
index 0000000000..350e1fa2bb
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-41ad52e1376596e9ac3c22be039975e223645b4a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-42d2e80906545a50b4b5b37278132b764296c031 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-42d2e80906545a50b4b5b37278132b764296c031
new file mode 100644
index 0000000000..82de2d57ba
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-42d2e80906545a50b4b5b37278132b764296c031
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-43f9633b24fd27f1bbe8884ec506197e52001797 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-43f9633b24fd27f1bbe8884ec506197e52001797
new file mode 100644
index 0000000000..27072f6757
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-43f9633b24fd27f1bbe8884ec506197e52001797
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-454e9d66253c206916e1bea69bdaabd8bb8c982c b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-454e9d66253c206916e1bea69bdaabd8bb8c982c
new file mode 100644
index 0000000000..7862116a09
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-454e9d66253c206916e1bea69bdaabd8bb8c982c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-497e1c1554a8e021ba6c02ffdd2a4d809669c60f b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-497e1c1554a8e021ba6c02ffdd2a4d809669c60f
new file mode 100644
index 0000000000..6d74b04504
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-497e1c1554a8e021ba6c02ffdd2a4d809669c60f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-49c4f247eb2aaa8f4474aec363e203e557948bc2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-49c4f247eb2aaa8f4474aec363e203e557948bc2
new file mode 100644
index 0000000000..e34de16ff9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-49c4f247eb2aaa8f4474aec363e203e557948bc2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4af36327fb381a5e5af2072f038a10e36368bdd3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4af36327fb381a5e5af2072f038a10e36368bdd3
new file mode 100644
index 0000000000..9e82d231e5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4af36327fb381a5e5af2072f038a10e36368bdd3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4d51faa099fbe0900fcf30461a6be12dc80dde16 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4d51faa099fbe0900fcf30461a6be12dc80dde16
new file mode 100644
index 0000000000..9add789db8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4d51faa099fbe0900fcf30461a6be12dc80dde16
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e19149430212fc0ed7be30854bfe538572d33b6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e19149430212fc0ed7be30854bfe538572d33b6
new file mode 100644
index 0000000000..4bcca63342
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e19149430212fc0ed7be30854bfe538572d33b6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e297b6205976cf94c8ccbcbf12277efb8ade986 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e297b6205976cf94c8ccbcbf12277efb8ade986
new file mode 100644
index 0000000000..e46a2e5f2e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e297b6205976cf94c8ccbcbf12277efb8ade986
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e6ec3d9abdaf620dad4cd2f2c206c29e8d9ecc8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e6ec3d9abdaf620dad4cd2f2c206c29e8d9ecc8
new file mode 100644
index 0000000000..f1279e3934
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-4e6ec3d9abdaf620dad4cd2f2c206c29e8d9ecc8
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-50e18d167be26c8e19877d88e9b53591f4c8b029 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-50e18d167be26c8e19877d88e9b53591f4c8b029
new file mode 100644
index 0000000000..51f182dc81
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-50e18d167be26c8e19877d88e9b53591f4c8b029
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5827f4af3145108483e4f410e1427e7a41c4d3cc b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5827f4af3145108483e4f410e1427e7a41c4d3cc
new file mode 100644
index 0000000000..e38f09594d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5827f4af3145108483e4f410e1427e7a41c4d3cc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5854cfbb68190f86a40492c5ca8e15c0fc062168 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5854cfbb68190f86a40492c5ca8e15c0fc062168
new file mode 100644
index 0000000000..75807455e9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5854cfbb68190f86a40492c5ca8e15c0fc062168
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59e58120d4f37a833a79e68372c4eaf361a92240 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59e58120d4f37a833a79e68372c4eaf361a92240
new file mode 100644
index 0000000000..6b847ae3a4
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59e58120d4f37a833a79e68372c4eaf361a92240
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59f857e19c386154d65c48a72cf1e4e69aefd1ba b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59f857e19c386154d65c48a72cf1e4e69aefd1ba
new file mode 100644
index 0000000000..e99f2f9ffa
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59f857e19c386154d65c48a72cf1e4e69aefd1ba
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5ba35fa4177ca59450b597dd1a2d48f8a68959dd b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5ba35fa4177ca59450b597dd1a2d48f8a68959dd
new file mode 100644
index 0000000000..d52c7a0326
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5ba35fa4177ca59450b597dd1a2d48f8a68959dd
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5c52df7b4025baa05218c14a3cd535914445c42f b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5c52df7b4025baa05218c14a3cd535914445c42f
new file mode 100644
index 0000000000..22efd27721
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-5c52df7b4025baa05218c14a3cd535914445c42f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-603222da20c147a532188e80fc1a26e4e8bc4bee b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-603222da20c147a532188e80fc1a26e4e8bc4bee
new file mode 100644
index 0000000000..d0bd7a775b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-603222da20c147a532188e80fc1a26e4e8bc4bee
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6f1b8715edddbf0aa17fe9ee0fbf02ff7c92807c b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6f1b8715edddbf0aa17fe9ee0fbf02ff7c92807c
new file mode 100644
index 0000000000..900f95b520
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6f1b8715edddbf0aa17fe9ee0fbf02ff7c92807c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6f5c899196cb31232d2d6694be43e1ac0a662f48 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6f5c899196cb31232d2d6694be43e1ac0a662f48
new file mode 100644
index 0000000000..d872203981
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6f5c899196cb31232d2d6694be43e1ac0a662f48
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6fad807070626f184704ea082667ebe780369f74 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6fad807070626f184704ea082667ebe780369f74
new file mode 100644
index 0000000000..a0b75268b5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-6fad807070626f184704ea082667ebe780369f74
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-775a43af5d81808d1ccbcc43aec12ce14aed8a53 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-775a43af5d81808d1ccbcc43aec12ce14aed8a53
new file mode 100644
index 0000000000..5fddb86269
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-775a43af5d81808d1ccbcc43aec12ce14aed8a53
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-787fc772315a87e40b63fbc25fb703a87581f0e7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-787fc772315a87e40b63fbc25fb703a87581f0e7
new file mode 100644
index 0000000000..75e0c393a9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-787fc772315a87e40b63fbc25fb703a87581f0e7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7a4ce28ac085ce3763fe91e24bdd92914d134a3f b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7a4ce28ac085ce3763fe91e24bdd92914d134a3f
new file mode 100644
index 0000000000..a80b1b3dc9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7a4ce28ac085ce3763fe91e24bdd92914d134a3f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7c6eb73a27b693a346f309370e965d0d62048503 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7c6eb73a27b693a346f309370e965d0d62048503
new file mode 100644
index 0000000000..49da3aaeed
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7c6eb73a27b693a346f309370e965d0d62048503
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7dd4bf6d825fb4e9a43506aff001119c7e8f00ac b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7dd4bf6d825fb4e9a43506aff001119c7e8f00ac
new file mode 100644
index 0000000000..2c13d8aeae
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-7dd4bf6d825fb4e9a43506aff001119c7e8f00ac
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-83f6929c001d26c25c5d0f63ba0bcc099b9959bc b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-83f6929c001d26c25c5d0f63ba0bcc099b9959bc
new file mode 100644
index 0000000000..2e0f1ef5c0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-83f6929c001d26c25c5d0f63ba0bcc099b9959bc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-85fd89292e43c2a2338f86e46d10fffb6f85ed88 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-85fd89292e43c2a2338f86e46d10fffb6f85ed88
new file mode 100644
index 0000000000..9ec9583b27
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-85fd89292e43c2a2338f86e46d10fffb6f85ed88
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-864c58c601ce89a5191fc6e665dff0812a6e4bfb b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-864c58c601ce89a5191fc6e665dff0812a6e4bfb
new file mode 100644
index 0000000000..6bcdf2b2bc
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-864c58c601ce89a5191fc6e665dff0812a6e4bfb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-8c44d14673d21592ff930297b2307096d9f7136f b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-8c44d14673d21592ff930297b2307096d9f7136f
new file mode 100644
index 0000000000..8e4a94fb68
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-8c44d14673d21592ff930297b2307096d9f7136f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9137b1dc16097e720a1837a2117f43b940180f3d b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9137b1dc16097e720a1837a2117f43b940180f3d
new file mode 100644
index 0000000000..15887c72ac
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9137b1dc16097e720a1837a2117f43b940180f3d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-91964f1b7d1bc2460d93775fb64c7e6f737ce634 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-91964f1b7d1bc2460d93775fb64c7e6f737ce634
new file mode 100644
index 0000000000..954e121e64
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-91964f1b7d1bc2460d93775fb64c7e6f737ce634
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-949b13ffa41b1c202fd74d4c9cd45e840aa9d0f6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-949b13ffa41b1c202fd74d4c9cd45e840aa9d0f6
new file mode 100644
index 0000000000..3138357906
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-949b13ffa41b1c202fd74d4c9cd45e840aa9d0f6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-95e740aca3d281f30929d51a628cdfab4ca863ad b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-95e740aca3d281f30929d51a628cdfab4ca863ad
new file mode 100644
index 0000000000..780a4c5778
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-95e740aca3d281f30929d51a628cdfab4ca863ad
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9b205954747d5f120b36e004116fa2fe22cd5105 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9b205954747d5f120b36e004116fa2fe22cd5105
new file mode 100644
index 0000000000..26897a6407
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9b205954747d5f120b36e004116fa2fe22cd5105
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9c2cf43a9cdba7a35485fadb0b0424a88f7d7b8a b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9c2cf43a9cdba7a35485fadb0b0424a88f7d7b8a
new file mode 100644
index 0000000000..9b6561d709
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9c2cf43a9cdba7a35485fadb0b0424a88f7d7b8a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9f50180d69973cd2187ecba50fc2894edf6a341e b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9f50180d69973cd2187ecba50fc2894edf6a341e
new file mode 100644
index 0000000000..57ab601e33
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9f50180d69973cd2187ecba50fc2894edf6a341e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9fd80ce4eeb83cdea4eedd9995ffc53d640e692e b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9fd80ce4eeb83cdea4eedd9995ffc53d640e692e
new file mode 100644
index 0000000000..9787e4a89a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-9fd80ce4eeb83cdea4eedd9995ffc53d640e692e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a15f2c17a8fa204f3183fd7422876f28ef7c85ee b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a15f2c17a8fa204f3183fd7422876f28ef7c85ee
new file mode 100644
index 0000000000..89774f834d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a15f2c17a8fa204f3183fd7422876f28ef7c85ee
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a21d5f69a1433ba0580840405fbd66f3b3569104 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a21d5f69a1433ba0580840405fbd66f3b3569104
new file mode 100644
index 0000000000..98e5ec09c3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a21d5f69a1433ba0580840405fbd66f3b3569104
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a2ff9a686f9775c715870fa2f25b600471ca8c01 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a2ff9a686f9775c715870fa2f25b600471ca8c01
new file mode 100644
index 0000000000..476d0c0ccc
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a2ff9a686f9775c715870fa2f25b600471ca8c01
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a6ec7e9fef2e54036de257f5e7da3e87ea1f39f2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a6ec7e9fef2e54036de257f5e7da3e87ea1f39f2
new file mode 100644
index 0000000000..be3d8b3f06
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-a6ec7e9fef2e54036de257f5e7da3e87ea1f39f2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ab3ecf04012140fdabae0d037189eedb24516d04 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ab3ecf04012140fdabae0d037189eedb24516d04
new file mode 100644
index 0000000000..2dd5eaf11c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ab3ecf04012140fdabae0d037189eedb24516d04
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b39ce8e62e5c9e046d67e946436609e01f067a53 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b39ce8e62e5c9e046d67e946436609e01f067a53
new file mode 100644
index 0000000000..d934685765
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b39ce8e62e5c9e046d67e946436609e01f067a53
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b479e66d221f3db92c31b6b6aace69599f648d51 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b479e66d221f3db92c31b6b6aace69599f648d51
new file mode 100644
index 0000000000..6f425b4456
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b479e66d221f3db92c31b6b6aace69599f648d51
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-bd17ab1e7e9328739f455641e8dfa11951ac742a b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-bd17ab1e7e9328739f455641e8dfa11951ac742a
new file mode 100644
index 0000000000..1fcbbb7bed
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-bd17ab1e7e9328739f455641e8dfa11951ac742a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c0413dd6857d1ed3e5484df5e70656356f3c997a b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c0413dd6857d1ed3e5484df5e70656356f3c997a
new file mode 100644
index 0000000000..b043fc5872
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c0413dd6857d1ed3e5484df5e70656356f3c997a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c1a4c1aa8b4f1b081993f93ca92a1136a7302be5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c1a4c1aa8b4f1b081993f93ca92a1136a7302be5
new file mode 100644
index 0000000000..4fcb303ef2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c1a4c1aa8b4f1b081993f93ca92a1136a7302be5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c42d2add77ba492df95cfaf2e4e08e56818368ce b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c42d2add77ba492df95cfaf2e4e08e56818368ce
new file mode 100644
index 0000000000..e7c8586db6
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-c42d2add77ba492df95cfaf2e4e08e56818368ce
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ccb9f8221fd8fcacc5fb4a3c251fc06104027ddd b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ccb9f8221fd8fcacc5fb4a3c251fc06104027ddd
new file mode 100644
index 0000000000..45451fc0b2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ccb9f8221fd8fcacc5fb4a3c251fc06104027ddd
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-d5b0e587cafc10b7878bc691b6fcb7c1164e7558 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-d5b0e587cafc10b7878bc691b6fcb7c1164e7558
new file mode 100644
index 0000000000..4c7441aca0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-d5b0e587cafc10b7878bc691b6fcb7c1164e7558
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-d61454675241d9df9049f5bd57f47326059d7132 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-d61454675241d9df9049f5bd57f47326059d7132
new file mode 100644
index 0000000000..fd174ab11c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-d61454675241d9df9049f5bd57f47326059d7132
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ddac3b604ee6d4a51161a267b688a3b72fb6768d b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ddac3b604ee6d4a51161a267b688a3b72fb6768d
new file mode 100644
index 0000000000..8fb1727e67
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ddac3b604ee6d4a51161a267b688a3b72fb6768d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-decf36e136646eb3ab44fc4c5f327ccd99ddea88 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-decf36e136646eb3ab44fc4c5f327ccd99ddea88
new file mode 100644
index 0000000000..ce11954e69
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-decf36e136646eb3ab44fc4c5f327ccd99ddea88
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-e4d4b51cc7731d12daee738c4b81158a03302ebb b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-e4d4b51cc7731d12daee738c4b81158a03302ebb
new file mode 100644
index 0000000000..644fa899a3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-e4d4b51cc7731d12daee738c4b81158a03302ebb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-eb5d258a429fa9c20f8513211a33100abd5f8f3f b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-eb5d258a429fa9c20f8513211a33100abd5f8f3f
new file mode 100644
index 0000000000..b37ce7a2ef
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-eb5d258a429fa9c20f8513211a33100abd5f8f3f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ee032544a2c1487469cc17f870043f4d513999f7 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ee032544a2c1487469cc17f870043f4d513999f7
new file mode 100644
index 0000000000..75813f9c7e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-ee032544a2c1487469cc17f870043f4d513999f7
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-eec019a7a40f5d8f8c0e9c72215286f442a9b150 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-eec019a7a40f5d8f8c0e9c72215286f442a9b150
new file mode 100644
index 0000000000..1845b7260b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-eec019a7a40f5d8f8c0e9c72215286f442a9b150
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-f0c7e2cc8f8587bcab636a63191b2fd37e0cf8ae b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-f0c7e2cc8f8587bcab636a63191b2fd37e0cf8ae
new file mode 100644
index 0000000000..5f3bc3a090
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-f0c7e2cc8f8587bcab636a63191b2fd37e0cf8ae
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-fc088cee74d4e8dd791291b5575fc0fe9fe7378d b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-fc088cee74d4e8dd791291b5575fc0fe9fe7378d
new file mode 100644
index 0000000000..3fe07f3527
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-fc088cee74d4e8dd791291b5575fc0fe9fe7378d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d0541179f78beb9037070ca52969526b83eb608a b/test/core/end2end/fuzzers/api_fuzzer_corpus/d0541179f78beb9037070ca52969526b83eb608a
new file mode 100644
index 0000000000..b778596db9
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d0541179f78beb9037070ca52969526b83eb608a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d05a854e44c9c6f0dd0c58e6bd305e6fe48c32f5 b/test/core/end2end/fuzzers/api_fuzzer_corpus/d05a854e44c9c6f0dd0c58e6bd305e6fe48c32f5
new file mode 100644
index 0000000000..6574cb33de
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d05a854e44c9c6f0dd0c58e6bd305e6fe48c32f5
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d2a63dcb354906d4d67104ba2a1f5e97a6196183 b/test/core/end2end/fuzzers/api_fuzzer_corpus/d2a63dcb354906d4d67104ba2a1f5e97a6196183
new file mode 100644
index 0000000000..6f8a3a80cb
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d2a63dcb354906d4d67104ba2a1f5e97a6196183
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d33e33320e5165dac72007845a86a9709d75c42e b/test/core/end2end/fuzzers/api_fuzzer_corpus/d33e33320e5165dac72007845a86a9709d75c42e
new file mode 100644
index 0000000000..23292b2d33
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d33e33320e5165dac72007845a86a9709d75c42e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d48c4a56dc90b16a14dbf9934fc3ce7c9706104e b/test/core/end2end/fuzzers/api_fuzzer_corpus/d48c4a56dc90b16a14dbf9934fc3ce7c9706104e
new file mode 100644
index 0000000000..4546c96ff2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d48c4a56dc90b16a14dbf9934fc3ce7c9706104e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d4a7be7c4a826d8151d5d7c1c781143baf90ff28 b/test/core/end2end/fuzzers/api_fuzzer_corpus/d4a7be7c4a826d8151d5d7c1c781143baf90ff28
new file mode 100644
index 0000000000..65d4c4b5d5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d4a7be7c4a826d8151d5d7c1c781143baf90ff28
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d53b67bdedf136125bbee00d136720efa23898dc b/test/core/end2end/fuzzers/api_fuzzer_corpus/d53b67bdedf136125bbee00d136720efa23898dc
new file mode 100644
index 0000000000..f5eeffdfb2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d53b67bdedf136125bbee00d136720efa23898dc
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d63dab7d78a0a58c37631e488b1eeb7c2bb67e34 b/test/core/end2end/fuzzers/api_fuzzer_corpus/d63dab7d78a0a58c37631e488b1eeb7c2bb67e34
new file mode 100644
index 0000000000..02c478367a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d63dab7d78a0a58c37631e488b1eeb7c2bb67e34
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d73ee327123be0e9bc72485b5517dd1bf691e249 b/test/core/end2end/fuzzers/api_fuzzer_corpus/d73ee327123be0e9bc72485b5517dd1bf691e249
new file mode 100644
index 0000000000..6e8dcbe5c8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d73ee327123be0e9bc72485b5517dd1bf691e249
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/d7e298c12f97064ebe494593ecbe26df96f7f84d b/test/core/end2end/fuzzers/api_fuzzer_corpus/d7e298c12f97064ebe494593ecbe26df96f7f84d
new file mode 100644
index 0000000000..0efac7621a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/d7e298c12f97064ebe494593ecbe26df96f7f84d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dc6db500586253e4b9b0adeb20214327990d790d b/test/core/end2end/fuzzers/api_fuzzer_corpus/dc6db500586253e4b9b0adeb20214327990d790d
new file mode 100644
index 0000000000..752fbb77b1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dc6db500586253e4b9b0adeb20214327990d790d
@@ -0,0 +1 @@
+	
\ No newline at end of file
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dcb9a8007d2693d35911dfcde7ae960adbeb2601 b/test/core/end2end/fuzzers/api_fuzzer_corpus/dcb9a8007d2693d35911dfcde7ae960adbeb2601
new file mode 100644
index 0000000000..871b65b4db
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dcb9a8007d2693d35911dfcde7ae960adbeb2601
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dcf71fe33130be78708d234005f8bb4f4b06d75c b/test/core/end2end/fuzzers/api_fuzzer_corpus/dcf71fe33130be78708d234005f8bb4f4b06d75c
new file mode 100644
index 0000000000..82f021c0e7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dcf71fe33130be78708d234005f8bb4f4b06d75c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dd19b226a1c60dceee7e656cee561b4acfe77aee b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd19b226a1c60dceee7e656cee561b4acfe77aee
new file mode 100644
index 0000000000..f6c431c387
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd19b226a1c60dceee7e656cee561b4acfe77aee
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dd6d1ddb251fc3574733232c4a85dabdcf60d4c3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd6d1ddb251fc3574733232c4a85dabdcf60d4c3
new file mode 100644
index 0000000000..af0cdd88b0
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd6d1ddb251fc3574733232c4a85dabdcf60d4c3
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dd8989a51df53e6f0a59959a8b5ad411c9fa0ba2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd8989a51df53e6f0a59959a8b5ad411c9fa0ba2
new file mode 100644
index 0000000000..aee842e90b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd8989a51df53e6f0a59959a8b5ad411c9fa0ba2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dd8c099f1687f8b0581481a75f8844f6118d4a66 b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd8c099f1687f8b0581481a75f8844f6118d4a66
new file mode 100644
index 0000000000..ab89806234
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dd8c099f1687f8b0581481a75f8844f6118d4a66
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/de0f7b6518fb5dd14f29ec66dddc5af50370b3fa b/test/core/end2end/fuzzers/api_fuzzer_corpus/de0f7b6518fb5dd14f29ec66dddc5af50370b3fa
new file mode 100644
index 0000000000..91187e4c02
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/de0f7b6518fb5dd14f29ec66dddc5af50370b3fa
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dec7ea8faa2bbbbada2adc0a9e52d0335004869f b/test/core/end2end/fuzzers/api_fuzzer_corpus/dec7ea8faa2bbbbada2adc0a9e52d0335004869f
new file mode 100644
index 0000000000..5a7a5bc425
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dec7ea8faa2bbbbada2adc0a9e52d0335004869f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/df272aa4f3370128af034e7f5dd1524246b72d83 b/test/core/end2end/fuzzers/api_fuzzer_corpus/df272aa4f3370128af034e7f5dd1524246b72d83
new file mode 100644
index 0000000000..978b8c9842
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/df272aa4f3370128af034e7f5dd1524246b72d83
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dfb8a3c29f657d533b0d940ffefe599cdb85120f b/test/core/end2end/fuzzers/api_fuzzer_corpus/dfb8a3c29f657d533b0d940ffefe599cdb85120f
new file mode 100644
index 0000000000..d863356403
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dfb8a3c29f657d533b0d940ffefe599cdb85120f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/dfd6e1fef6b2737e4d1c56db648a958bcce0a889 b/test/core/end2end/fuzzers/api_fuzzer_corpus/dfd6e1fef6b2737e4d1c56db648a958bcce0a889
new file mode 100644
index 0000000000..03672553c2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/dfd6e1fef6b2737e4d1c56db648a958bcce0a889
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e048e989af2d9aec0d63f72fa8feede387114779 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e048e989af2d9aec0d63f72fa8feede387114779
new file mode 100644
index 0000000000..af7be6db53
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e048e989af2d9aec0d63f72fa8feede387114779
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e0588c306f2ab329d6c4bd3226e8a55e83708c1e b/test/core/end2end/fuzzers/api_fuzzer_corpus/e0588c306f2ab329d6c4bd3226e8a55e83708c1e
new file mode 100644
index 0000000000..55adcf004f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e0588c306f2ab329d6c4bd3226e8a55e83708c1e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e061b554b941636414621e0a54d2d1c7014a1ac4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e061b554b941636414621e0a54d2d1c7014a1ac4
new file mode 100644
index 0000000000..84bf920e0e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e061b554b941636414621e0a54d2d1c7014a1ac4
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e14dbfabfdbfa666e68562b0e854544e76f5446d b/test/core/end2end/fuzzers/api_fuzzer_corpus/e14dbfabfdbfa666e68562b0e854544e76f5446d
new file mode 100644
index 0000000000..f86fdaf268
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e14dbfabfdbfa666e68562b0e854544e76f5446d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e16c732d28873c13aa0e6cc4af1880c8c6eb7367 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e16c732d28873c13aa0e6cc4af1880c8c6eb7367
new file mode 100644
index 0000000000..e6ff571bb1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e16c732d28873c13aa0e6cc4af1880c8c6eb7367
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e280d72b157d00bf77608bd7b16afd2f5550a06f b/test/core/end2end/fuzzers/api_fuzzer_corpus/e280d72b157d00bf77608bd7b16afd2f5550a06f
new file mode 100644
index 0000000000..ce5b3bb973
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e280d72b157d00bf77608bd7b16afd2f5550a06f
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e29bab478641dd412057dfb6b0a0d78afd96dd60 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e29bab478641dd412057dfb6b0a0d78afd96dd60
new file mode 100644
index 0000000000..0890a7ae05
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e29bab478641dd412057dfb6b0a0d78afd96dd60
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e2abd47fcabc336d25a4e65f2c46867234c85cfa b/test/core/end2end/fuzzers/api_fuzzer_corpus/e2abd47fcabc336d25a4e65f2c46867234c85cfa
new file mode 100644
index 0000000000..ab9fc6c2da
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e2abd47fcabc336d25a4e65f2c46867234c85cfa
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e2b07847cba288469491f873561bf4f2acf09393 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e2b07847cba288469491f873561bf4f2acf09393
new file mode 100644
index 0000000000..b1ca588683
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e2b07847cba288469491f873561bf4f2acf09393
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e3854bc2e1bc52f498780be3147d6f870e85d8af b/test/core/end2end/fuzzers/api_fuzzer_corpus/e3854bc2e1bc52f498780be3147d6f870e85d8af
new file mode 100644
index 0000000000..4343803386
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e3854bc2e1bc52f498780be3147d6f870e85d8af
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e3c84286df55942bc2673eaaca844ebf5892b080 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e3c84286df55942bc2673eaaca844ebf5892b080
new file mode 100644
index 0000000000..ba11b0cfce
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e3c84286df55942bc2673eaaca844ebf5892b080
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e4238ff612439be100fc2188bffa6aac1d7e5e5c b/test/core/end2end/fuzzers/api_fuzzer_corpus/e4238ff612439be100fc2188bffa6aac1d7e5e5c
new file mode 100644
index 0000000000..2895f44883
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e4238ff612439be100fc2188bffa6aac1d7e5e5c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e42a3228f11b2c16ab3ec082c521905e390e356e b/test/core/end2end/fuzzers/api_fuzzer_corpus/e42a3228f11b2c16ab3ec082c521905e390e356e
new file mode 100644
index 0000000000..93ab91b6a5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e42a3228f11b2c16ab3ec082c521905e390e356e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e45762f05b01eb2c781cc8cb15db74a31d97566b b/test/core/end2end/fuzzers/api_fuzzer_corpus/e45762f05b01eb2c781cc8cb15db74a31d97566b
new file mode 100644
index 0000000000..0ce2b4d066
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e45762f05b01eb2c781cc8cb15db74a31d97566b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e48ae5d10ab8c349250e8c6b9a491a154b4a861d b/test/core/end2end/fuzzers/api_fuzzer_corpus/e48ae5d10ab8c349250e8c6b9a491a154b4a861d
new file mode 100644
index 0000000000..7dce27f84e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e48ae5d10ab8c349250e8c6b9a491a154b4a861d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e4da3ef8c789c4c243b9d0787f94aca5ab232103 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e4da3ef8c789c4c243b9d0787f94aca5ab232103
new file mode 100644
index 0000000000..a259f66947
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e4da3ef8c789c4c243b9d0787f94aca5ab232103
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e4db5d1742f4336c13a7941b3aacfd352a6db462 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e4db5d1742f4336c13a7941b3aacfd352a6db462
new file mode 100644
index 0000000000..dc048a85b8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e4db5d1742f4336c13a7941b3aacfd352a6db462
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e62a93cf5ead5a0c5e4cd13bce4cfe83c54b1c5a b/test/core/end2end/fuzzers/api_fuzzer_corpus/e62a93cf5ead5a0c5e4cd13bce4cfe83c54b1c5a
new file mode 100644
index 0000000000..4f07e3e60a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e62a93cf5ead5a0c5e4cd13bce4cfe83c54b1c5a
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e6523bc48bc3bbd56cbaf034e016c1fe56b76096 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e6523bc48bc3bbd56cbaf034e016c1fe56b76096
new file mode 100644
index 0000000000..258b888be2
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e6523bc48bc3bbd56cbaf034e016c1fe56b76096
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e7ac184d872400a6d5af852ade5adf9d68c97058 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e7ac184d872400a6d5af852ade5adf9d68c97058
new file mode 100644
index 0000000000..512d51a5c1
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e7ac184d872400a6d5af852ade5adf9d68c97058
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e814c704e36a84f75c235985a13d58fd1eaa8e01 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e814c704e36a84f75c235985a13d58fd1eaa8e01
new file mode 100644
index 0000000000..fe22eee894
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e814c704e36a84f75c235985a13d58fd1eaa8e01
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e8324e1c5c1541f327f848821074ed0b9b0a4b41 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e8324e1c5c1541f327f848821074ed0b9b0a4b41
new file mode 100644
index 0000000000..7232ce6260
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e8324e1c5c1541f327f848821074ed0b9b0a4b41
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e8616e0840a6d4077b322fa2b1906d1fd4c406bd b/test/core/end2end/fuzzers/api_fuzzer_corpus/e8616e0840a6d4077b322fa2b1906d1fd4c406bd
new file mode 100644
index 0000000000..991ab1b4c8
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e8616e0840a6d4077b322fa2b1906d1fd4c406bd
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e9ae17566804496b92d2ddcf99129436d771fb81 b/test/core/end2end/fuzzers/api_fuzzer_corpus/e9ae17566804496b92d2ddcf99129436d771fb81
new file mode 100644
index 0000000000..8fdbed2c5e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/e9ae17566804496b92d2ddcf99129436d771fb81
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ea5ba8919404e2a04f38b17e7e3031a5586a2d0c b/test/core/end2end/fuzzers/api_fuzzer_corpus/ea5ba8919404e2a04f38b17e7e3031a5586a2d0c
new file mode 100644
index 0000000000..11806736ab
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ea5ba8919404e2a04f38b17e7e3031a5586a2d0c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/eaf587f7f303dda3ccc5becc6e645af7a47b36bf b/test/core/end2end/fuzzers/api_fuzzer_corpus/eaf587f7f303dda3ccc5becc6e645af7a47b36bf
new file mode 100644
index 0000000000..1435880338
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/eaf587f7f303dda3ccc5becc6e645af7a47b36bf
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ec89eb7e84e6cf7859ab478362e0ae5227a5e154 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ec89eb7e84e6cf7859ab478362e0ae5227a5e154
new file mode 100644
index 0000000000..f0547e5451
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ec89eb7e84e6cf7859ab478362e0ae5227a5e154
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ecf186f5cf01d52568516a56b3f5d752edd56827 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ecf186f5cf01d52568516a56b3f5d752edd56827
new file mode 100644
index 0000000000..0a42b7f31c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ecf186f5cf01d52568516a56b3f5d752edd56827
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ed3b22b78763a426595a8ebc05d07004cc80aaff b/test/core/end2end/fuzzers/api_fuzzer_corpus/ed3b22b78763a426595a8ebc05d07004cc80aaff
new file mode 100644
index 0000000000..b5e839ac75
--- /dev/null
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diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ed96c5df96beb5a2bdc4424c38e60fe74da080a2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ed96c5df96beb5a2bdc4424c38e60fe74da080a2
new file mode 100644
index 0000000000..a023a0053d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ed96c5df96beb5a2bdc4424c38e60fe74da080a2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/edac3a36778a1b2db96c3c07435696b9aca94c24 b/test/core/end2end/fuzzers/api_fuzzer_corpus/edac3a36778a1b2db96c3c07435696b9aca94c24
new file mode 100644
index 0000000000..7ee3f0659e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/edac3a36778a1b2db96c3c07435696b9aca94c24
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ee147e7d7ca7937fe37d2bc2aed053ef1e396b07 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ee147e7d7ca7937fe37d2bc2aed053ef1e396b07
new file mode 100644
index 0000000000..a500bf03fe
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ee147e7d7ca7937fe37d2bc2aed053ef1e396b07
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/eed65ac63a044c87423f333f3b9c5f0d3bc7bd3b b/test/core/end2end/fuzzers/api_fuzzer_corpus/eed65ac63a044c87423f333f3b9c5f0d3bc7bd3b
new file mode 100644
index 0000000000..1ad9d286ca
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/eed65ac63a044c87423f333f3b9c5f0d3bc7bd3b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/efc7a168a1060d04234a3acd3da42a80e49eb72e b/test/core/end2end/fuzzers/api_fuzzer_corpus/efc7a168a1060d04234a3acd3da42a80e49eb72e
new file mode 100644
index 0000000000..83cb4412d3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/efc7a168a1060d04234a3acd3da42a80e49eb72e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f0d8a858c5459aa5f6b2777b50a736dc8645708d b/test/core/end2end/fuzzers/api_fuzzer_corpus/f0d8a858c5459aa5f6b2777b50a736dc8645708d
new file mode 100644
index 0000000000..0a33aafa8d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f0d8a858c5459aa5f6b2777b50a736dc8645708d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f0fdf87e2d0f86481b6ae05a55cb108c5763ab53 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f0fdf87e2d0f86481b6ae05a55cb108c5763ab53
new file mode 100644
index 0000000000..bdcf216d98
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f0fdf87e2d0f86481b6ae05a55cb108c5763ab53
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f157bcc470de43462d90bc95ed4a063caac77a93 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f157bcc470de43462d90bc95ed4a063caac77a93
new file mode 100644
index 0000000000..c32327d205
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f157bcc470de43462d90bc95ed4a063caac77a93
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f1f390731dc9ae4194a528df462fb07736796e5d b/test/core/end2end/fuzzers/api_fuzzer_corpus/f1f390731dc9ae4194a528df462fb07736796e5d
new file mode 100644
index 0000000000..43970b603f
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f1f390731dc9ae4194a528df462fb07736796e5d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f27b422b6c15da10aa282fbcdc0f1ad9e4813c83 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f27b422b6c15da10aa282fbcdc0f1ad9e4813c83
new file mode 100644
index 0000000000..2ab9e01420
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f27b422b6c15da10aa282fbcdc0f1ad9e4813c83
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f28eabe16ec69e9200f3febad09e4ae4514ec0e2 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f28eabe16ec69e9200f3febad09e4ae4514ec0e2
new file mode 100644
index 0000000000..30ba513765
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f28eabe16ec69e9200f3febad09e4ae4514ec0e2
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f3259c7e2397f3c8d0664c7c5e1a6758c0874e51 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f3259c7e2397f3c8d0664c7c5e1a6758c0874e51
new file mode 100644
index 0000000000..7d2334da9a
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f3259c7e2397f3c8d0664c7c5e1a6758c0874e51
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f3809c7a3770a31e892dc396a388642c02624713 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f3809c7a3770a31e892dc396a388642c02624713
new file mode 100644
index 0000000000..b30ab939cb
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f3809c7a3770a31e892dc396a388642c02624713
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f399656ccd610dfdf61556d22d3e1044d7335d6d b/test/core/end2end/fuzzers/api_fuzzer_corpus/f399656ccd610dfdf61556d22d3e1044d7335d6d
new file mode 100644
index 0000000000..4e1cd2a89c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f399656ccd610dfdf61556d22d3e1044d7335d6d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f3fba021c9e4cdee8ea694017ae1e40f55fead5d b/test/core/end2end/fuzzers/api_fuzzer_corpus/f3fba021c9e4cdee8ea694017ae1e40f55fead5d
new file mode 100644
index 0000000000..2fa4bd27b7
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f3fba021c9e4cdee8ea694017ae1e40f55fead5d
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f5921e18d4b2628142abb0597d87eab72c535c19 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f5921e18d4b2628142abb0597d87eab72c535c19
new file mode 100644
index 0000000000..047b37c3ac
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f5921e18d4b2628142abb0597d87eab72c535c19
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f7f567d97a49158b053ebdc1b20e9ab5640ffb5b b/test/core/end2end/fuzzers/api_fuzzer_corpus/f7f567d97a49158b053ebdc1b20e9ab5640ffb5b
new file mode 100644
index 0000000000..a996b05025
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f7f567d97a49158b053ebdc1b20e9ab5640ffb5b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f7f76d0247a67a5be4a32b33756cba36b16bc025 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f7f76d0247a67a5be4a32b33756cba36b16bc025
new file mode 100644
index 0000000000..f38898d66b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f7f76d0247a67a5be4a32b33756cba36b16bc025
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f80ebea47ad5fefe472da7af6cfb3eb0e3b5f516 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f80ebea47ad5fefe472da7af6cfb3eb0e3b5f516
new file mode 100644
index 0000000000..37dede088e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f80ebea47ad5fefe472da7af6cfb3eb0e3b5f516
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f8247b46413793b558009f646e262029edc0a319 b/test/core/end2end/fuzzers/api_fuzzer_corpus/f8247b46413793b558009f646e262029edc0a319
new file mode 100644
index 0000000000..46f148387e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f8247b46413793b558009f646e262029edc0a319
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/f969f53d5cfed53ceb7df67bfe619b08f6b0841b b/test/core/end2end/fuzzers/api_fuzzer_corpus/f969f53d5cfed53ceb7df67bfe619b08f6b0841b
new file mode 100644
index 0000000000..0925494c06
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/f969f53d5cfed53ceb7df67bfe619b08f6b0841b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fa2ff7bb76b0025211b2f8bd05ef62e42db92621 b/test/core/end2end/fuzzers/api_fuzzer_corpus/fa2ff7bb76b0025211b2f8bd05ef62e42db92621
new file mode 100644
index 0000000000..de173cface
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fa2ff7bb76b0025211b2f8bd05ef62e42db92621
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fb4e6a537eb5540e22108fc9e9fc14bfe4eb6acb b/test/core/end2end/fuzzers/api_fuzzer_corpus/fb4e6a537eb5540e22108fc9e9fc14bfe4eb6acb
new file mode 100644
index 0000000000..4912f4087c
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fb4e6a537eb5540e22108fc9e9fc14bfe4eb6acb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fb76689d3c70bd5927b3256eda9738a2208e2b13 b/test/core/end2end/fuzzers/api_fuzzer_corpus/fb76689d3c70bd5927b3256eda9738a2208e2b13
new file mode 100644
index 0000000000..b69004c254
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fb76689d3c70bd5927b3256eda9738a2208e2b13
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fc3c6bdc85b45374d3417035e813eff18e07614e b/test/core/end2end/fuzzers/api_fuzzer_corpus/fc3c6bdc85b45374d3417035e813eff18e07614e
new file mode 100644
index 0000000000..738bca4945
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fc3c6bdc85b45374d3417035e813eff18e07614e
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fc5f8421028a5f12b68be86eb12af4c945947f69 b/test/core/end2end/fuzzers/api_fuzzer_corpus/fc5f8421028a5f12b68be86eb12af4c945947f69
new file mode 100644
index 0000000000..0c8732b76e
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fc5f8421028a5f12b68be86eb12af4c945947f69
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fccbb9620ab9c570f5dda169c7dd8ab907ea3161 b/test/core/end2end/fuzzers/api_fuzzer_corpus/fccbb9620ab9c570f5dda169c7dd8ab907ea3161
new file mode 100644
index 0000000000..0840f0eaaf
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fccbb9620ab9c570f5dda169c7dd8ab907ea3161
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fd825fd14341b700853b72e4fea0899c2dfb441b b/test/core/end2end/fuzzers/api_fuzzer_corpus/fd825fd14341b700853b72e4fea0899c2dfb441b
new file mode 100644
index 0000000000..6448213877
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fd825fd14341b700853b72e4fea0899c2dfb441b
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fd9e3ed58eeac32972d96a3adf1857bb598896b9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/fd9e3ed58eeac32972d96a3adf1857bb598896b9
new file mode 100644
index 0000000000..89dd30b5d3
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fd9e3ed58eeac32972d96a3adf1857bb598896b9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fda1d52ffb49a46cb9d3ccedfc82e2425f6d4dfb b/test/core/end2end/fuzzers/api_fuzzer_corpus/fda1d52ffb49a46cb9d3ccedfc82e2425f6d4dfb
new file mode 100644
index 0000000000..ed4d96c62d
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fda1d52ffb49a46cb9d3ccedfc82e2425f6d4dfb
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fdecd05733278ece9993eb2bef13917675cc062c b/test/core/end2end/fuzzers/api_fuzzer_corpus/fdecd05733278ece9993eb2bef13917675cc062c
new file mode 100644
index 0000000000..796956c823
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fdecd05733278ece9993eb2bef13917675cc062c
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/fef08f9549a14a65f1135a00da7d6b4eb7a03e80 b/test/core/end2end/fuzzers/api_fuzzer_corpus/fef08f9549a14a65f1135a00da7d6b4eb7a03e80
new file mode 100644
index 0000000000..c5c26c0772
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/fef08f9549a14a65f1135a00da7d6b4eb7a03e80
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/ffae95db59780f530e4d891bb26f6843cf361bc9 b/test/core/end2end/fuzzers/api_fuzzer_corpus/ffae95db59780f530e4d891bb26f6843cf361bc9
new file mode 100644
index 0000000000..28a72001b4
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/ffae95db59780f530e4d891bb26f6843cf361bc9
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-1b475868d1f5313d0b7c58fc1652108d84da6112 b/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-1b475868d1f5313d0b7c58fc1652108d84da6112
new file mode 100644
index 0000000000..48237e5c45
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-1b475868d1f5313d0b7c58fc1652108d84da6112
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-a1b05639643aee995cb8995e26e7698911c182f6 b/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-a1b05639643aee995cb8995e26e7698911c182f6
new file mode 100644
index 0000000000..957f1a1cf5
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-a1b05639643aee995cb8995e26e7698911c182f6
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-e861dafbe5a18d7ba97d92c49a3ce09df2877804 b/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-e861dafbe5a18d7ba97d92c49a3ce09df2877804
new file mode 100644
index 0000000000..d9793d308b
--- /dev/null
+++ b/test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-e861dafbe5a18d7ba97d92c49a3ce09df2877804
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/0458afa7b507195f5d2cb51e887324d6361eb0c4 b/test/core/end2end/fuzzers/client_fuzzer_corpus/0458afa7b507195f5d2cb51e887324d6361eb0c4
new file mode 100644
index 0000000000..6349ad1989
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/0458afa7b507195f5d2cb51e887324d6361eb0c4
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/050b79c8bf73ec690aca18072cdf95810c2efe8f b/test/core/end2end/fuzzers/client_fuzzer_corpus/050b79c8bf73ec690aca18072cdf95810c2efe8f
new file mode 100644
index 0000000000..16924a8463
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/050b79c8bf73ec690aca18072cdf95810c2efe8f
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/07c4d3b37e850941d04ee067fcd356cf9bb4e0d7 b/test/core/end2end/fuzzers/client_fuzzer_corpus/07c4d3b37e850941d04ee067fcd356cf9bb4e0d7
new file mode 100644
index 0000000000..100ed42598
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/07c4d3b37e850941d04ee067fcd356cf9bb4e0d7
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/0c0169947924a15b1b5fbe8f9013fd94d1931a36 b/test/core/end2end/fuzzers/client_fuzzer_corpus/0c0169947924a15b1b5fbe8f9013fd94d1931a36
new file mode 100644
index 0000000000..dbfa835e5c
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/0c0169947924a15b1b5fbe8f9013fd94d1931a36
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/0f7480eb0099b7706b221f610d2613b401d6d3eb b/test/core/end2end/fuzzers/client_fuzzer_corpus/0f7480eb0099b7706b221f610d2613b401d6d3eb
new file mode 100644
index 0000000000..cad65f9004
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/0f7480eb0099b7706b221f610d2613b401d6d3eb
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/16c85fba7b4510ac26c0fb91886d8bd166a7e780 b/test/core/end2end/fuzzers/client_fuzzer_corpus/16c85fba7b4510ac26c0fb91886d8bd166a7e780
new file mode 100644
index 0000000000..24f1303e8d
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/16c85fba7b4510ac26c0fb91886d8bd166a7e780
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/19876f91bd6e71eb4caf6748425ac645f3e73c5d b/test/core/end2end/fuzzers/client_fuzzer_corpus/19876f91bd6e71eb4caf6748425ac645f3e73c5d
new file mode 100644
index 0000000000..331ee2041c
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/19876f91bd6e71eb4caf6748425ac645f3e73c5d
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/1dfbb6d67ad8d2513a1841ca6f82faacc3783b61 b/test/core/end2end/fuzzers/client_fuzzer_corpus/1dfbb6d67ad8d2513a1841ca6f82faacc3783b61
new file mode 100644
index 0000000000..9189e1d1c1
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/1dfbb6d67ad8d2513a1841ca6f82faacc3783b61
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/2086f83879663d7fd7fbd9a5b96ab6b5a555858e b/test/core/end2end/fuzzers/client_fuzzer_corpus/2086f83879663d7fd7fbd9a5b96ab6b5a555858e
new file mode 100644
index 0000000000..7b460e857e
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/2086f83879663d7fd7fbd9a5b96ab6b5a555858e
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/20f43d29547f865e9832fd567c2a5a5899512c4d b/test/core/end2end/fuzzers/client_fuzzer_corpus/20f43d29547f865e9832fd567c2a5a5899512c4d
new file mode 100644
index 0000000000..0ba3da12f8
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/20f43d29547f865e9832fd567c2a5a5899512c4d
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/2197f63b9ae90f5374726d0c5b252e729014a9cd b/test/core/end2end/fuzzers/client_fuzzer_corpus/2197f63b9ae90f5374726d0c5b252e729014a9cd
new file mode 100644
index 0000000000..8f1170b88f
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/2197f63b9ae90f5374726d0c5b252e729014a9cd
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/22741b8aa6129655a8130305da40ae1d1500b844 b/test/core/end2end/fuzzers/client_fuzzer_corpus/22741b8aa6129655a8130305da40ae1d1500b844
new file mode 100644
index 0000000000..7a89a2d93d
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/22741b8aa6129655a8130305da40ae1d1500b844
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/23066692f06a4802954b513a98546b3ac9b9ab85 b/test/core/end2end/fuzzers/client_fuzzer_corpus/23066692f06a4802954b513a98546b3ac9b9ab85
new file mode 100644
index 0000000000..ed10b33fb4
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/23066692f06a4802954b513a98546b3ac9b9ab85
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/27bb1ffec59d4475dd9076b408b2cc4e4e17d229 b/test/core/end2end/fuzzers/client_fuzzer_corpus/27bb1ffec59d4475dd9076b408b2cc4e4e17d229
new file mode 100644
index 0000000000..47de5fcf88
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/27bb1ffec59d4475dd9076b408b2cc4e4e17d229
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/2c1c3047f9ca95e64cb158c09eac2ba17455e918 b/test/core/end2end/fuzzers/client_fuzzer_corpus/2c1c3047f9ca95e64cb158c09eac2ba17455e918
new file mode 100644
index 0000000000..4f8f752825
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/2c1c3047f9ca95e64cb158c09eac2ba17455e918
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/2e888bda20346a2e19379e72ff04aa063897bf0c b/test/core/end2end/fuzzers/client_fuzzer_corpus/2e888bda20346a2e19379e72ff04aa063897bf0c
new file mode 100644
index 0000000000..56e026d3b7
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/2e888bda20346a2e19379e72ff04aa063897bf0c
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/3104e3fcf2fe43d5a748772a04ae32a1c828e6d9 b/test/core/end2end/fuzzers/client_fuzzer_corpus/3104e3fcf2fe43d5a748772a04ae32a1c828e6d9
new file mode 100644
index 0000000000..6a693d63cb
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/3104e3fcf2fe43d5a748772a04ae32a1c828e6d9
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/330dd22142ff48078b189f4533ccc56878d88f92 b/test/core/end2end/fuzzers/client_fuzzer_corpus/330dd22142ff48078b189f4533ccc56878d88f92
new file mode 100644
index 0000000000..824e2b5734
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/330dd22142ff48078b189f4533ccc56878d88f92
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/3608078afee69879bcdbc2278e6f314469426bde b/test/core/end2end/fuzzers/client_fuzzer_corpus/3608078afee69879bcdbc2278e6f314469426bde
new file mode 100644
index 0000000000..2f51f8aa20
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/3608078afee69879bcdbc2278e6f314469426bde
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/37c4aa3ff3947065ea7850574a82a29af35c1a39 b/test/core/end2end/fuzzers/client_fuzzer_corpus/37c4aa3ff3947065ea7850574a82a29af35c1a39
new file mode 100644
index 0000000000..69d0d2dc99
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/37c4aa3ff3947065ea7850574a82a29af35c1a39
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/3fc7331ba0cf4e65fd120c9925ec0134fe683b22 b/test/core/end2end/fuzzers/client_fuzzer_corpus/3fc7331ba0cf4e65fd120c9925ec0134fe683b22
new file mode 100644
index 0000000000..953cc45739
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/3fc7331ba0cf4e65fd120c9925ec0134fe683b22
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/400e6759ebf559748bde92047368f7c612457edd b/test/core/end2end/fuzzers/client_fuzzer_corpus/400e6759ebf559748bde92047368f7c612457edd
new file mode 100644
index 0000000000..a7a06f0940
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/400e6759ebf559748bde92047368f7c612457edd
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/40948412b61caddaf558a73661caa8c1d2f858a4 b/test/core/end2end/fuzzers/client_fuzzer_corpus/40948412b61caddaf558a73661caa8c1d2f858a4
new file mode 100644
index 0000000000..87fe560a2b
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/40948412b61caddaf558a73661caa8c1d2f858a4
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/4492f9d9339873fc83bf248e392b0dcbe28c0f6f b/test/core/end2end/fuzzers/client_fuzzer_corpus/4492f9d9339873fc83bf248e392b0dcbe28c0f6f
new file mode 100644
index 0000000000..d7c5a904d8
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/4492f9d9339873fc83bf248e392b0dcbe28c0f6f
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/4740e1ad2320dc991596716087180e2965a38863 b/test/core/end2end/fuzzers/client_fuzzer_corpus/4740e1ad2320dc991596716087180e2965a38863
new file mode 100644
index 0000000000..6da2172acc
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/4740e1ad2320dc991596716087180e2965a38863
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/48521eae3d7e3f60237d1ed792a3c0f141919a19 b/test/core/end2end/fuzzers/client_fuzzer_corpus/48521eae3d7e3f60237d1ed792a3c0f141919a19
new file mode 100644
index 0000000000..930145bb58
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/48521eae3d7e3f60237d1ed792a3c0f141919a19
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/48a3f2938fe5c8e383cbb028a36a943a64800f03 b/test/core/end2end/fuzzers/client_fuzzer_corpus/48a3f2938fe5c8e383cbb028a36a943a64800f03
new file mode 100644
index 0000000000..5fe5c751cd
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/48a3f2938fe5c8e383cbb028a36a943a64800f03
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/5323af7bd1b45a816c8f8e5c689f5a44fbb14a01 b/test/core/end2end/fuzzers/client_fuzzer_corpus/5323af7bd1b45a816c8f8e5c689f5a44fbb14a01
new file mode 100644
index 0000000000..3be5ddab83
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/5323af7bd1b45a816c8f8e5c689f5a44fbb14a01
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/54d1bf3559344653a4f758f7360c46307cdad159 b/test/core/end2end/fuzzers/client_fuzzer_corpus/54d1bf3559344653a4f758f7360c46307cdad159
new file mode 100644
index 0000000000..86b4e4f46c
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/54d1bf3559344653a4f758f7360c46307cdad159
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/569d50f1d1307e63a549a8a8fa677c2a77acc0ac b/test/core/end2end/fuzzers/client_fuzzer_corpus/569d50f1d1307e63a549a8a8fa677c2a77acc0ac
new file mode 100644
index 0000000000..a137768e61
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/569d50f1d1307e63a549a8a8fa677c2a77acc0ac
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/578ef036a0278e79f7b935293be37bc8c0467269 b/test/core/end2end/fuzzers/client_fuzzer_corpus/578ef036a0278e79f7b935293be37bc8c0467269
new file mode 100644
index 0000000000..e27cfd0a5e
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/578ef036a0278e79f7b935293be37bc8c0467269
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/57e7cb796ac65d2e3ea2255b162da4b9873c83f4 b/test/core/end2end/fuzzers/client_fuzzer_corpus/57e7cb796ac65d2e3ea2255b162da4b9873c83f4
new file mode 100644
index 0000000000..c689dc0743
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/57e7cb796ac65d2e3ea2255b162da4b9873c83f4
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/58f6d7756d89ac2eaebb50c6d1d0b9f5fa0ce357 b/test/core/end2end/fuzzers/client_fuzzer_corpus/58f6d7756d89ac2eaebb50c6d1d0b9f5fa0ce357
new file mode 100644
index 0000000000..a16ab5f832
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/58f6d7756d89ac2eaebb50c6d1d0b9f5fa0ce357
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/593792bfb0489b02828c93278cf869e6fc8bc230 b/test/core/end2end/fuzzers/client_fuzzer_corpus/593792bfb0489b02828c93278cf869e6fc8bc230
new file mode 100644
index 0000000000..b9ec3a289c
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/593792bfb0489b02828c93278cf869e6fc8bc230
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/5a8cbd42a033b7899383d48c3929e517dafbb995 b/test/core/end2end/fuzzers/client_fuzzer_corpus/5a8cbd42a033b7899383d48c3929e517dafbb995
new file mode 100644
index 0000000000..68f9acbfd6
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/5a8cbd42a033b7899383d48c3929e517dafbb995
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/5f3fc3d381f07c2593cd70d9889182fe67ded2cf b/test/core/end2end/fuzzers/client_fuzzer_corpus/5f3fc3d381f07c2593cd70d9889182fe67ded2cf
new file mode 100644
index 0000000000..2a54775cf9
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/5f3fc3d381f07c2593cd70d9889182fe67ded2cf
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/60ece7fac04e244655a6091a7fc6eb76f07c7192 b/test/core/end2end/fuzzers/client_fuzzer_corpus/60ece7fac04e244655a6091a7fc6eb76f07c7192
new file mode 100644
index 0000000000..9287c0e2ac
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/60ece7fac04e244655a6091a7fc6eb76f07c7192
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/622d46854c2d38b5fe632649d58a69b7da0803c0 b/test/core/end2end/fuzzers/client_fuzzer_corpus/622d46854c2d38b5fe632649d58a69b7da0803c0
new file mode 100644
index 0000000000..d837546c74
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/622d46854c2d38b5fe632649d58a69b7da0803c0
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/629dd62ac0c44a5bb49a5b4b5e4d3f15852a0991 b/test/core/end2end/fuzzers/client_fuzzer_corpus/629dd62ac0c44a5bb49a5b4b5e4d3f15852a0991
new file mode 100644
index 0000000000..b7459cc16b
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/629dd62ac0c44a5bb49a5b4b5e4d3f15852a0991
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/6353376941f932ad6ea7620be8673c27ec106aba b/test/core/end2end/fuzzers/client_fuzzer_corpus/6353376941f932ad6ea7620be8673c27ec106aba
new file mode 100644
index 0000000000..565ded1d56
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/6353376941f932ad6ea7620be8673c27ec106aba
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/64af31c3b16ccf2e182998ef7739bc3d33781d8f b/test/core/end2end/fuzzers/client_fuzzer_corpus/64af31c3b16ccf2e182998ef7739bc3d33781d8f
new file mode 100644
index 0000000000..06bf037820
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/64af31c3b16ccf2e182998ef7739bc3d33781d8f
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/65c7a3ead9676f7669f0e93c432af714c232e5d1 b/test/core/end2end/fuzzers/client_fuzzer_corpus/65c7a3ead9676f7669f0e93c432af714c232e5d1
new file mode 100644
index 0000000000..d9898ce366
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/65c7a3ead9676f7669f0e93c432af714c232e5d1
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/65cc92868683dcf3c5d1bd1a73db9473d6594bcf b/test/core/end2end/fuzzers/client_fuzzer_corpus/65cc92868683dcf3c5d1bd1a73db9473d6594bcf
new file mode 100644
index 0000000000..88b661d2fa
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/65cc92868683dcf3c5d1bd1a73db9473d6594bcf
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/667ce3f1c874125b7106bd5520e60e865442a712 b/test/core/end2end/fuzzers/client_fuzzer_corpus/667ce3f1c874125b7106bd5520e60e865442a712
new file mode 100644
index 0000000000..eb29d7dc4d
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/667ce3f1c874125b7106bd5520e60e865442a712
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/6d054bad0bd3c522d23221d71e3987a0e6875150 b/test/core/end2end/fuzzers/client_fuzzer_corpus/6d054bad0bd3c522d23221d71e3987a0e6875150
new file mode 100644
index 0000000000..edcffff2c5
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/6d054bad0bd3c522d23221d71e3987a0e6875150
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/6d1509889d26c2ea16f5d12d5f6490dba7f1565a b/test/core/end2end/fuzzers/client_fuzzer_corpus/6d1509889d26c2ea16f5d12d5f6490dba7f1565a
new file mode 100644
index 0000000000..f1b7311602
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/6d1509889d26c2ea16f5d12d5f6490dba7f1565a
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/70b8a3a8621ae1ede2b8a4a263060fc2e277bf2e b/test/core/end2end/fuzzers/client_fuzzer_corpus/70b8a3a8621ae1ede2b8a4a263060fc2e277bf2e
new file mode 100644
index 0000000000..04bbc439f5
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/70b8a3a8621ae1ede2b8a4a263060fc2e277bf2e
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/748c538708f0a2f586d7ff5f662643b8f9137a01 b/test/core/end2end/fuzzers/client_fuzzer_corpus/748c538708f0a2f586d7ff5f662643b8f9137a01
new file mode 100644
index 0000000000..28192824b3
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/748c538708f0a2f586d7ff5f662643b8f9137a01
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/74f8cfb3d1b8422927edac90107aa280a8a2a19c b/test/core/end2end/fuzzers/client_fuzzer_corpus/74f8cfb3d1b8422927edac90107aa280a8a2a19c
new file mode 100644
index 0000000000..cee1c74aa4
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/74f8cfb3d1b8422927edac90107aa280a8a2a19c
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/78abacff5d3a1e826a30f278ad52237661018a67 b/test/core/end2end/fuzzers/client_fuzzer_corpus/78abacff5d3a1e826a30f278ad52237661018a67
new file mode 100644
index 0000000000..a01e127d40
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/78abacff5d3a1e826a30f278ad52237661018a67
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/7a7e42cad11ed5ac39966d23efd04777265fc50f b/test/core/end2end/fuzzers/client_fuzzer_corpus/7a7e42cad11ed5ac39966d23efd04777265fc50f
new file mode 100644
index 0000000000..cc4cf76a89
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/7a7e42cad11ed5ac39966d23efd04777265fc50f
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/7b8922ed2aef31167d305571a4ebbf7c182c502a b/test/core/end2end/fuzzers/client_fuzzer_corpus/7b8922ed2aef31167d305571a4ebbf7c182c502a
new file mode 100644
index 0000000000..4808a6b2f3
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/7b8922ed2aef31167d305571a4ebbf7c182c502a
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/7e0e459a0794d4f91954eb6e0b6a09685fa71c78 b/test/core/end2end/fuzzers/client_fuzzer_corpus/7e0e459a0794d4f91954eb6e0b6a09685fa71c78
new file mode 100644
index 0000000000..a7bd93aae9
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/7e0e459a0794d4f91954eb6e0b6a09685fa71c78
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/822cae715352b8551c840be2c7e2f98df455c9c4 b/test/core/end2end/fuzzers/client_fuzzer_corpus/822cae715352b8551c840be2c7e2f98df455c9c4
new file mode 100644
index 0000000000..a6d6b68c3c
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/822cae715352b8551c840be2c7e2f98df455c9c4
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/83019387566fd48738546cdae398f750cccdc437 b/test/core/end2end/fuzzers/client_fuzzer_corpus/83019387566fd48738546cdae398f750cccdc437
new file mode 100644
index 0000000000..68c89f2e74
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/83019387566fd48738546cdae398f750cccdc437
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/83baac5cfbec61ec277114aae4384a11a576b8f7 b/test/core/end2end/fuzzers/client_fuzzer_corpus/83baac5cfbec61ec277114aae4384a11a576b8f7
new file mode 100644
index 0000000000..23ccb6290b
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/83baac5cfbec61ec277114aae4384a11a576b8f7
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/87967bf3b1412ff60c5bec8815f4b031aec26b4c b/test/core/end2end/fuzzers/client_fuzzer_corpus/87967bf3b1412ff60c5bec8815f4b031aec26b4c
new file mode 100644
index 0000000000..72fd25d869
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/87967bf3b1412ff60c5bec8815f4b031aec26b4c
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/87c8549a5e524609c29e6a6ae32a3a301b72c286 b/test/core/end2end/fuzzers/client_fuzzer_corpus/87c8549a5e524609c29e6a6ae32a3a301b72c286
new file mode 100644
index 0000000000..4271aceac0
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/87c8549a5e524609c29e6a6ae32a3a301b72c286
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/8ecf066a6728b30e1153ad875562165db07b0d0a b/test/core/end2end/fuzzers/client_fuzzer_corpus/8ecf066a6728b30e1153ad875562165db07b0d0a
new file mode 100644
index 0000000000..eab8c6fab6
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/8ecf066a6728b30e1153ad875562165db07b0d0a
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/8fd4873d307af2d217f5d2bf02b495ba681fad74 b/test/core/end2end/fuzzers/client_fuzzer_corpus/8fd4873d307af2d217f5d2bf02b495ba681fad74
new file mode 100644
index 0000000000..a08fdfbafd
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/8fd4873d307af2d217f5d2bf02b495ba681fad74
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/94cb0b9e26e4a800f3d413f3617111bde2438009 b/test/core/end2end/fuzzers/client_fuzzer_corpus/94cb0b9e26e4a800f3d413f3617111bde2438009
new file mode 100644
index 0000000000..445452288d
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/94cb0b9e26e4a800f3d413f3617111bde2438009
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/9a21cda420d50994a8ed56e147f8316b75514db1 b/test/core/end2end/fuzzers/client_fuzzer_corpus/9a21cda420d50994a8ed56e147f8316b75514db1
new file mode 100644
index 0000000000..0fc82e3ed8
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/9a21cda420d50994a8ed56e147f8316b75514db1
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/9a3f9531b10e8e0874699ce3e35031a35feee5d5 b/test/core/end2end/fuzzers/client_fuzzer_corpus/9a3f9531b10e8e0874699ce3e35031a35feee5d5
new file mode 100644
index 0000000000..7bf9394be7
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/9a3f9531b10e8e0874699ce3e35031a35feee5d5
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/9ad011d38bed7470e7f60780faf64d8f008b9b04 b/test/core/end2end/fuzzers/client_fuzzer_corpus/9ad011d38bed7470e7f60780faf64d8f008b9b04
new file mode 100644
index 0000000000..28d5fa1f8b
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/9ad011d38bed7470e7f60780faf64d8f008b9b04
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/9d43a08a964c82abba4a47246b1955d9e3609f6e b/test/core/end2end/fuzzers/client_fuzzer_corpus/9d43a08a964c82abba4a47246b1955d9e3609f6e
new file mode 100644
index 0000000000..f0f4205518
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/9d43a08a964c82abba4a47246b1955d9e3609f6e
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/9f8e14ee5b4a2095f917084b60b5fda33f21d9fd b/test/core/end2end/fuzzers/client_fuzzer_corpus/9f8e14ee5b4a2095f917084b60b5fda33f21d9fd
new file mode 100644
index 0000000000..c6e40f4d6e
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/9f8e14ee5b4a2095f917084b60b5fda33f21d9fd
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/b0af44b49dd7c2b2e02ed4fbc7658975338e352d b/test/core/end2end/fuzzers/client_fuzzer_corpus/b0af44b49dd7c2b2e02ed4fbc7658975338e352d
new file mode 100644
index 0000000000..8bd48c793c
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/b0af44b49dd7c2b2e02ed4fbc7658975338e352d
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/b306bbbf43b343ce3ea91f3ecf08501411c57e9d b/test/core/end2end/fuzzers/client_fuzzer_corpus/b306bbbf43b343ce3ea91f3ecf08501411c57e9d
new file mode 100644
index 0000000000..fc361574a7
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/b306bbbf43b343ce3ea91f3ecf08501411c57e9d
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/b3376cb338d9ff88fdef2f8670a09e973f28f6c6 b/test/core/end2end/fuzzers/client_fuzzer_corpus/b3376cb338d9ff88fdef2f8670a09e973f28f6c6
new file mode 100644
index 0000000000..4c9e4cc1bf
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/b3376cb338d9ff88fdef2f8670a09e973f28f6c6
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/be1208404991b11ef9e246d2f3537ffd65a57824 b/test/core/end2end/fuzzers/client_fuzzer_corpus/be1208404991b11ef9e246d2f3537ffd65a57824
new file mode 100644
index 0000000000..b0bd00b169
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/be1208404991b11ef9e246d2f3537ffd65a57824
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/c2f666569d0c6fbec701fc6772433afa22a1dad0 b/test/core/end2end/fuzzers/client_fuzzer_corpus/c2f666569d0c6fbec701fc6772433afa22a1dad0
new file mode 100644
index 0000000000..a22ac1a0e4
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/c2f666569d0c6fbec701fc6772433afa22a1dad0
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/c5dc5f5ba9c2a2af7e91e200a8e82ea2c44f3a56 b/test/core/end2end/fuzzers/client_fuzzer_corpus/c5dc5f5ba9c2a2af7e91e200a8e82ea2c44f3a56
new file mode 100644
index 0000000000..ff59f11045
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/c5dc5f5ba9c2a2af7e91e200a8e82ea2c44f3a56
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/c8b79e05649da58817a10ee6160a00d80b4a217c b/test/core/end2end/fuzzers/client_fuzzer_corpus/c8b79e05649da58817a10ee6160a00d80b4a217c
new file mode 100644
index 0000000000..04e63de1a0
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/c8b79e05649da58817a10ee6160a00d80b4a217c
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/c9b92995f282262c51aa7106608eee6cade3245b b/test/core/end2end/fuzzers/client_fuzzer_corpus/c9b92995f282262c51aa7106608eee6cade3245b
new file mode 100644
index 0000000000..24572673a3
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/c9b92995f282262c51aa7106608eee6cade3245b
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/cae3827ca308a477c16852cf8a435881a4058719 b/test/core/end2end/fuzzers/client_fuzzer_corpus/cae3827ca308a477c16852cf8a435881a4058719
new file mode 100644
index 0000000000..168cdf95f3
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/cae3827ca308a477c16852cf8a435881a4058719
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/cdb000a2d87e073efc9491c59707289f6bc18fd9 b/test/core/end2end/fuzzers/client_fuzzer_corpus/cdb000a2d87e073efc9491c59707289f6bc18fd9
new file mode 100644
index 0000000000..be561c8277
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/cdb000a2d87e073efc9491c59707289f6bc18fd9
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/d10f52ffae7857c5989e16960942179856f308f6 b/test/core/end2end/fuzzers/client_fuzzer_corpus/d10f52ffae7857c5989e16960942179856f308f6
new file mode 100644
index 0000000000..cf3974a2c5
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/d10f52ffae7857c5989e16960942179856f308f6
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/d1cabc19ce0f9fbe365d96db68eda9f86e005eef b/test/core/end2end/fuzzers/client_fuzzer_corpus/d1cabc19ce0f9fbe365d96db68eda9f86e005eef
new file mode 100644
index 0000000000..c92a360ccf
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/d1cabc19ce0f9fbe365d96db68eda9f86e005eef
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/d2b5fa141432c1894be8b8242c27c248fd55cddd b/test/core/end2end/fuzzers/client_fuzzer_corpus/d2b5fa141432c1894be8b8242c27c248fd55cddd
new file mode 100644
index 0000000000..6f0690eeb4
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/d2b5fa141432c1894be8b8242c27c248fd55cddd
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/d3d7a110638c6814e7bc8b388d25891349de14e4 b/test/core/end2end/fuzzers/client_fuzzer_corpus/d3d7a110638c6814e7bc8b388d25891349de14e4
new file mode 100644
index 0000000000..81d92a4828
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/d3d7a110638c6814e7bc8b388d25891349de14e4
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/d60440ebffe00597bedf89a47b7cac3346823a20 b/test/core/end2end/fuzzers/client_fuzzer_corpus/d60440ebffe00597bedf89a47b7cac3346823a20
new file mode 100644
index 0000000000..519cc1d4c8
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/d60440ebffe00597bedf89a47b7cac3346823a20
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/d86820c738718311fc75191b5a35cbe7029aaf18 b/test/core/end2end/fuzzers/client_fuzzer_corpus/d86820c738718311fc75191b5a35cbe7029aaf18
new file mode 100644
index 0000000000..b2d745bc1c
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/d86820c738718311fc75191b5a35cbe7029aaf18
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/da2ec14db88e6f93bb19ba2f0a7306408de37cf9 b/test/core/end2end/fuzzers/client_fuzzer_corpus/da2ec14db88e6f93bb19ba2f0a7306408de37cf9
new file mode 100644
index 0000000000..8813fd4234
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/da2ec14db88e6f93bb19ba2f0a7306408de37cf9
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/daa680dc94232de7a6949ca6610eddcdbf13152c b/test/core/end2end/fuzzers/client_fuzzer_corpus/daa680dc94232de7a6949ca6610eddcdbf13152c
new file mode 100644
index 0000000000..f04cff2890
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/daa680dc94232de7a6949ca6610eddcdbf13152c
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/dbe415d09cd20abd88c858b8c9b2a9e552fbd8d8 b/test/core/end2end/fuzzers/client_fuzzer_corpus/dbe415d09cd20abd88c858b8c9b2a9e552fbd8d8
new file mode 100644
index 0000000000..1e4394a4c6
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/dbe415d09cd20abd88c858b8c9b2a9e552fbd8d8
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/dc45008d5a94beeb4aba87c4b26ac6f87df1490e b/test/core/end2end/fuzzers/client_fuzzer_corpus/dc45008d5a94beeb4aba87c4b26ac6f87df1490e
new file mode 100644
index 0000000000..b53b5036c0
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/dc45008d5a94beeb4aba87c4b26ac6f87df1490e
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/ddb283529bf32a85a79a57ac2f2f2d5f18631d92 b/test/core/end2end/fuzzers/client_fuzzer_corpus/ddb283529bf32a85a79a57ac2f2f2d5f18631d92
new file mode 100644
index 0000000000..13c55f0b6f
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/ddb283529bf32a85a79a57ac2f2f2d5f18631d92
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/de06dde2c760a56f63bafe6ff102663bf2d9339b b/test/core/end2end/fuzzers/client_fuzzer_corpus/de06dde2c760a56f63bafe6ff102663bf2d9339b
new file mode 100644
index 0000000000..59bea4cc08
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/de06dde2c760a56f63bafe6ff102663bf2d9339b
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/df20bbbb854cb997a73285ef30d227aa12d90e4e b/test/core/end2end/fuzzers/client_fuzzer_corpus/df20bbbb854cb997a73285ef30d227aa12d90e4e
new file mode 100644
index 0000000000..24a10c02cb
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/df20bbbb854cb997a73285ef30d227aa12d90e4e
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/e0375839ce86fa191b85662247d9b0598ec35a5d b/test/core/end2end/fuzzers/client_fuzzer_corpus/e0375839ce86fa191b85662247d9b0598ec35a5d
new file mode 100644
index 0000000000..99e59110a5
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/e0375839ce86fa191b85662247d9b0598ec35a5d
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/e0aa94f5a63cea106ff86739ff2bd85115fd3df0 b/test/core/end2end/fuzzers/client_fuzzer_corpus/e0aa94f5a63cea106ff86739ff2bd85115fd3df0
new file mode 100644
index 0000000000..e542cd8412
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/e0aa94f5a63cea106ff86739ff2bd85115fd3df0
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/e13b774309bbdec8e9d3b1d3f6dbf7d6851e30ac b/test/core/end2end/fuzzers/client_fuzzer_corpus/e13b774309bbdec8e9d3b1d3f6dbf7d6851e30ac
new file mode 100644
index 0000000000..eb7a935045
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/e13b774309bbdec8e9d3b1d3f6dbf7d6851e30ac
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/eb591d069d89f44150c17082e83c48c66c8e7fe3 b/test/core/end2end/fuzzers/client_fuzzer_corpus/eb591d069d89f44150c17082e83c48c66c8e7fe3
new file mode 100644
index 0000000000..c66e5b074a
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/eb591d069d89f44150c17082e83c48c66c8e7fe3
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/edee7f771a04e8ced659e7a5ddd6139e75055a7f b/test/core/end2end/fuzzers/client_fuzzer_corpus/edee7f771a04e8ced659e7a5ddd6139e75055a7f
new file mode 100644
index 0000000000..9fdf55ce22
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/edee7f771a04e8ced659e7a5ddd6139e75055a7f
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/ef2ae7dd190fdf0bd4cc2ae53c5cf1ea7db877fc b/test/core/end2end/fuzzers/client_fuzzer_corpus/ef2ae7dd190fdf0bd4cc2ae53c5cf1ea7db877fc
new file mode 100644
index 0000000000..0839fa3b2f
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/ef2ae7dd190fdf0bd4cc2ae53c5cf1ea7db877fc
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/efdf3f43fb29720dde23c3335cce7be48b761fb7 b/test/core/end2end/fuzzers/client_fuzzer_corpus/efdf3f43fb29720dde23c3335cce7be48b761fb7
new file mode 100644
index 0000000000..c36b601f16
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/efdf3f43fb29720dde23c3335cce7be48b761fb7
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/f1a5f3011be9748fb83e392e334e46c629a04379 b/test/core/end2end/fuzzers/client_fuzzer_corpus/f1a5f3011be9748fb83e392e334e46c629a04379
new file mode 100644
index 0000000000..98ebef2bdf
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/f1a5f3011be9748fb83e392e334e46c629a04379
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/f391771de2dfbf761a3eb70af7aa5f0af4446116 b/test/core/end2end/fuzzers/client_fuzzer_corpus/f391771de2dfbf761a3eb70af7aa5f0af4446116
new file mode 100644
index 0000000000..c391f56a11
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/f391771de2dfbf761a3eb70af7aa5f0af4446116
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/f4da422d640232e22f2613ebdacff33cecd61aea b/test/core/end2end/fuzzers/client_fuzzer_corpus/f4da422d640232e22f2613ebdacff33cecd61aea
new file mode 100644
index 0000000000..2d6585e4b6
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/f4da422d640232e22f2613ebdacff33cecd61aea
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/f81814b5f0191729c62ee5717775e1bb532efe7e b/test/core/end2end/fuzzers/client_fuzzer_corpus/f81814b5f0191729c62ee5717775e1bb532efe7e
new file mode 100644
index 0000000000..6c202e4b78
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/f81814b5f0191729c62ee5717775e1bb532efe7e
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/f8981798dab237ea34051d18b5e903f2300a0653 b/test/core/end2end/fuzzers/client_fuzzer_corpus/f8981798dab237ea34051d18b5e903f2300a0653
new file mode 100644
index 0000000000..340f89aa88
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/f8981798dab237ea34051d18b5e903f2300a0653
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/fcefef90833e6ba74d3e74756105e1f32d985162 b/test/core/end2end/fuzzers/client_fuzzer_corpus/fcefef90833e6ba74d3e74756105e1f32d985162
new file mode 100644
index 0000000000..a1e3118af5
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/fcefef90833e6ba74d3e74756105e1f32d985162
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/fea99272cd661a5fde2707e350d67a683a7c21a2 b/test/core/end2end/fuzzers/client_fuzzer_corpus/fea99272cd661a5fde2707e350d67a683a7c21a2
new file mode 100644
index 0000000000..710933be06
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/fea99272cd661a5fde2707e350d67a683a7c21a2
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/server_hanging_response_1_header b/test/core/end2end/fuzzers/client_fuzzer_corpus/server_hanging_response_1_header
new file mode 100644
index 0000000000..d2abd17464
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/server_hanging_response_1_header
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/server_hanging_response_2_header2 b/test/core/end2end/fuzzers/client_fuzzer_corpus/server_hanging_response_2_header2
new file mode 100644
index 0000000000..752af468ba
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/server_hanging_response_2_header2
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-2b505c78b53599040622864c18644b32c345884f b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-2b505c78b53599040622864c18644b32c345884f
new file mode 100644
index 0000000000..49b2086ff3
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-2b505c78b53599040622864c18644b32c345884f
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-82794c7583f365eece6a10ce776d59874490a2e7 b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-82794c7583f365eece6a10ce776d59874490a2e7
new file mode 100644
index 0000000000..0540c66155
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-82794c7583f365eece6a10ce776d59874490a2e7
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-96939ec880829d76392ba9de2c6ac5b3ff78d20a b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-96939ec880829d76392ba9de2c6ac5b3ff78d20a
new file mode 100644
index 0000000000..f72c62284f
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-96939ec880829d76392ba9de2c6ac5b3ff78d20a
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-bf008b5bfe748d33669c905f9b84be60856e57c8 b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-bf008b5bfe748d33669c905f9b84be60856e57c8
new file mode 100644
index 0000000000..c908d5e0b1
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-bf008b5bfe748d33669c905f9b84be60856e57c8
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-d446c0fd59ce5bd844a954f0c4f7e40a891135d9 b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-d446c0fd59ce5bd844a954f0c4f7e40a891135d9
new file mode 100644
index 0000000000..03531646e6
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-d446c0fd59ce5bd844a954f0c4f7e40a891135d9
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-ff38df2c9451c2fd00fd746c53adef87a495da9d b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-ff38df2c9451c2fd00fd746c53adef87a495da9d
new file mode 100644
index 0000000000..b1cac238a7
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/slow-unit-ff38df2c9451c2fd00fd746c53adef87a495da9d
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-6b847dcc217d2c51134ddf8939e3fe5153153ba5 b/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-6b847dcc217d2c51134ddf8939e3fe5153153ba5
new file mode 100644
index 0000000000..b9183c2a1f
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-6b847dcc217d2c51134ddf8939e3fe5153153ba5
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-76a0fb5e7896bbc694a45e713f9729248455aec5 b/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-76a0fb5e7896bbc694a45e713f9729248455aec5
new file mode 100644
index 0000000000..1a8084f3ac
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-76a0fb5e7896bbc694a45e713f9729248455aec5
diff --git a/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-e4cc5c1a9ab8c5f3f7ae3ca97e395beb682d65b0 b/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-e4cc5c1a9ab8c5f3f7ae3ca97e395beb682d65b0
new file mode 100644
index 0000000000..a55c4dbfaa
--- /dev/null
+++ b/test/core/end2end/fuzzers/client_fuzzer_corpus/timeout-e4cc5c1a9ab8c5f3f7ae3ca97e395beb682d65b0
diff --git a/test/core/end2end/fuzzers/generate_client_examples_of_bad_closing_streams.py b/test/core/end2end/fuzzers/generate_client_examples_of_bad_closing_streams.py
new file mode 100755
index 0000000000..d80c1e0442
--- /dev/null
+++ b/test/core/end2end/fuzzers/generate_client_examples_of_bad_closing_streams.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python2.7
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import os
+import sys
+
+os.chdir(os.path.dirname(sys.argv[0]))
+
+streams = {
+  'server_hanging_response_1_header': (
+    [0,0,0,4,0,0,0,0,0] + # settings frame
+    [0,0,0,1,5,0,0,0,1] # trailers
+  ),
+  'server_hanging_response_2_header2': (
+    [0,0,0,4,0,0,0,0,0] + # settings frame
+    [0,0,0,1,4,0,0,0,1] + # headers
+    [0,0,0,1,5,0,0,0,1] # trailers
+  ),
+}
+
+for name, stream in streams.items():
+  open('client_fuzzer_corpus/%s' % name, 'w').write(bytearray(stream))
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/023517819bc642abe41d8735112fcacaf018c0cc b/test/core/end2end/fuzzers/server_fuzzer_corpus/023517819bc642abe41d8735112fcacaf018c0cc
new file mode 100644
index 0000000000..51bd2e2111
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/023517819bc642abe41d8735112fcacaf018c0cc
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/0ab8698b211ee696f35f20a25c27e9429235fa41 b/test/core/end2end/fuzzers/server_fuzzer_corpus/0ab8698b211ee696f35f20a25c27e9429235fa41
new file mode 100644
index 0000000000..9d8ff4ebf1
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/0ab8698b211ee696f35f20a25c27e9429235fa41
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/11e90d0f3ecbf72ad5027051d476a31b8d7e0671 b/test/core/end2end/fuzzers/server_fuzzer_corpus/11e90d0f3ecbf72ad5027051d476a31b8d7e0671
new file mode 100644
index 0000000000..e46216d548
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/11e90d0f3ecbf72ad5027051d476a31b8d7e0671
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/1703a8f0c3b3c9dda9eba8d3850e69536436d57a b/test/core/end2end/fuzzers/server_fuzzer_corpus/1703a8f0c3b3c9dda9eba8d3850e69536436d57a
new file mode 100644
index 0000000000..af1b9060a4
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/1703a8f0c3b3c9dda9eba8d3850e69536436d57a
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/1928c455f3685f4abe7a04697f571ab864cae02e b/test/core/end2end/fuzzers/server_fuzzer_corpus/1928c455f3685f4abe7a04697f571ab864cae02e
new file mode 100644
index 0000000000..d89946b027
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/1928c455f3685f4abe7a04697f571ab864cae02e
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/29a8346696d6f0962072714b9626966c81dcef0c b/test/core/end2end/fuzzers/server_fuzzer_corpus/29a8346696d6f0962072714b9626966c81dcef0c
new file mode 100644
index 0000000000..85e9e1cbd5
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/29a8346696d6f0962072714b9626966c81dcef0c
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/3efcff3d4ca529a89061c05ef9e8035f36d564b1 b/test/core/end2end/fuzzers/server_fuzzer_corpus/3efcff3d4ca529a89061c05ef9e8035f36d564b1
new file mode 100644
index 0000000000..8e73152e24
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/3efcff3d4ca529a89061c05ef9e8035f36d564b1
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/3fd914fc88fbf1a8804c6715100793d27fefd21d b/test/core/end2end/fuzzers/server_fuzzer_corpus/3fd914fc88fbf1a8804c6715100793d27fefd21d
new file mode 100644
index 0000000000..bc41578930
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/3fd914fc88fbf1a8804c6715100793d27fefd21d
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/3ff171516486f77dda57bec1f757da1691547b9c b/test/core/end2end/fuzzers/server_fuzzer_corpus/3ff171516486f77dda57bec1f757da1691547b9c
new file mode 100644
index 0000000000..14fa54b37b
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/3ff171516486f77dda57bec1f757da1691547b9c
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/54aca6c103dbdf019a2bf45506786c095e470de1 b/test/core/end2end/fuzzers/server_fuzzer_corpus/54aca6c103dbdf019a2bf45506786c095e470de1
new file mode 100644
index 0000000000..ef0b1c6fe4
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/54aca6c103dbdf019a2bf45506786c095e470de1
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/5db8b96291c7ee12141eafc925be845c4f5ea069 b/test/core/end2end/fuzzers/server_fuzzer_corpus/5db8b96291c7ee12141eafc925be845c4f5ea069
new file mode 100644
index 0000000000..ced60a4956
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/5db8b96291c7ee12141eafc925be845c4f5ea069
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/6db42d0c5471ac697d82e882c01867b73f71c71f b/test/core/end2end/fuzzers/server_fuzzer_corpus/6db42d0c5471ac697d82e882c01867b73f71c71f
new file mode 100644
index 0000000000..bc3b3a7966
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/6db42d0c5471ac697d82e882c01867b73f71c71f
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/86478f200fa3602b9859597fd1ae56a04027d7e9 b/test/core/end2end/fuzzers/server_fuzzer_corpus/86478f200fa3602b9859597fd1ae56a04027d7e9
new file mode 100644
index 0000000000..887343dd82
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/86478f200fa3602b9859597fd1ae56a04027d7e9
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/8694fdefd4ed3d3fdb30fe1d7595f6ea6f5f5054 b/test/core/end2end/fuzzers/server_fuzzer_corpus/8694fdefd4ed3d3fdb30fe1d7595f6ea6f5f5054
new file mode 100644
index 0000000000..f3f73062b4
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/8694fdefd4ed3d3fdb30fe1d7595f6ea6f5f5054
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/87155c97c3fc6276f7b8f13b50a50e2307b2d397 b/test/core/end2end/fuzzers/server_fuzzer_corpus/87155c97c3fc6276f7b8f13b50a50e2307b2d397
new file mode 100644
index 0000000000..b659ab76f9
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/87155c97c3fc6276f7b8f13b50a50e2307b2d397
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/87e6640111fb02fa4cda7db9c1d51432b3b06212 b/test/core/end2end/fuzzers/server_fuzzer_corpus/87e6640111fb02fa4cda7db9c1d51432b3b06212
new file mode 100644
index 0000000000..ee71599c8c
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/87e6640111fb02fa4cda7db9c1d51432b3b06212
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/984886f71bcbb9e5c224ca15165d5c21d9daf13e b/test/core/end2end/fuzzers/server_fuzzer_corpus/984886f71bcbb9e5c224ca15165d5c21d9daf13e
new file mode 100644
index 0000000000..109e65afb5
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/984886f71bcbb9e5c224ca15165d5c21d9daf13e
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/9d7b307bf4ef07f46b2c99311b4486bf40884b1a b/test/core/end2end/fuzzers/server_fuzzer_corpus/9d7b307bf4ef07f46b2c99311b4486bf40884b1a
new file mode 100644
index 0000000000..d259cf38ae
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/9d7b307bf4ef07f46b2c99311b4486bf40884b1a
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/a8b4049240b53947a8bc76cadf8d4ff9a802c783 b/test/core/end2end/fuzzers/server_fuzzer_corpus/a8b4049240b53947a8bc76cadf8d4ff9a802c783
new file mode 100644
index 0000000000..ec69b8387a
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/a8b4049240b53947a8bc76cadf8d4ff9a802c783
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/a9fc296cc61d020bc9afbdd0e7e5e3031e884176 b/test/core/end2end/fuzzers/server_fuzzer_corpus/a9fc296cc61d020bc9afbdd0e7e5e3031e884176
new file mode 100644
index 0000000000..14b38ae106
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/a9fc296cc61d020bc9afbdd0e7e5e3031e884176
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/ab41d96d82d2dd3f41cd495c53ea031d7979b47a b/test/core/end2end/fuzzers/server_fuzzer_corpus/ab41d96d82d2dd3f41cd495c53ea031d7979b47a
new file mode 100644
index 0000000000..57fc82a0be
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/ab41d96d82d2dd3f41cd495c53ea031d7979b47a
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/c2d2aa1977b17d6e38f906968aa756e98dd09ffa b/test/core/end2end/fuzzers/server_fuzzer_corpus/c2d2aa1977b17d6e38f906968aa756e98dd09ffa
new file mode 100644
index 0000000000..7f2043faf9
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/c2d2aa1977b17d6e38f906968aa756e98dd09ffa
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/crash-e097bf07afa8e55d7dd5f5df3569e34903ccf9a7 b/test/core/end2end/fuzzers/server_fuzzer_corpus/crash-e097bf07afa8e55d7dd5f5df3569e34903ccf9a7
new file mode 100644
index 0000000000..7422f1e239
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/crash-e097bf07afa8e55d7dd5f5df3569e34903ccf9a7
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/d44d94764e1761cb7278ffe5cb17871abab7ed89 b/test/core/end2end/fuzzers/server_fuzzer_corpus/d44d94764e1761cb7278ffe5cb17871abab7ed89
new file mode 100644
index 0000000000..e08021fe0b
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/d44d94764e1761cb7278ffe5cb17871abab7ed89
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/df80b527a003e47a26099088a283228ec62a61c7 b/test/core/end2end/fuzzers/server_fuzzer_corpus/df80b527a003e47a26099088a283228ec62a61c7
new file mode 100644
index 0000000000..04f89c8074
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/df80b527a003e47a26099088a283228ec62a61c7
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/f3a092425c89f49b50469d522c99abbdb1b6dedf b/test/core/end2end/fuzzers/server_fuzzer_corpus/f3a092425c89f49b50469d522c99abbdb1b6dedf
new file mode 100644
index 0000000000..5def714a1d
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/f3a092425c89f49b50469d522c99abbdb1b6dedf
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/fe17c07ffbaa67f1165938d2578038637b93cf57 b/test/core/end2end/fuzzers/server_fuzzer_corpus/fe17c07ffbaa67f1165938d2578038637b93cf57
new file mode 100644
index 0000000000..d65b3bc707
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/fe17c07ffbaa67f1165938d2578038637b93cf57
diff --git a/test/core/end2end/fuzzers/server_fuzzer_corpus/ff902ef808e01b0b2d167c1c7e8e263d6f561941 b/test/core/end2end/fuzzers/server_fuzzer_corpus/ff902ef808e01b0b2d167c1c7e8e263d6f561941
new file mode 100644
index 0000000000..f530e0baf0
--- /dev/null
+++ b/test/core/end2end/fuzzers/server_fuzzer_corpus/ff902ef808e01b0b2d167c1c7e8e263d6f561941
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index bdb3874c21..26eee93439 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -56,7 +56,6 @@ END2END_FIXTURES = {
     'h2_census': default_unsecure_fixture_options,
     'h2_load_reporting': default_unsecure_fixture_options,
     'h2_fakesec': default_secure_fixture_options._replace(ci_mac=False),
-    'h2_fake_resolver': default_unsecure_fixture_options,
     'h2_fd': fd_unsecure_fixture_options,
     'h2_full': default_unsecure_fixture_options,
     'h2_full+pipe': default_unsecure_fixture_options._replace(
@@ -191,7 +190,8 @@ def main():
               'build': 'private',
               'language': 'c',
               'secure': True,
-              'src': ['test/core/end2end/end2end_tests.c'] + [
+              'src': ['test/core/end2end/end2end_tests.c',
+                      'test/core/end2end/end2end_test_utils.c'] + [
                   'test/core/end2end/tests/%s.c' % t
                   for t in sorted(END2END_TESTS.keys())],
               'headers': ['test/core/end2end/tests/cancel_test_helpers.h',
@@ -205,7 +205,8 @@ def main():
               'build': 'private',
               'language': 'c',
               'secure': False,
-              'src': ['test/core/end2end/end2end_nosec_tests.c'] + [
+              'src': ['test/core/end2end/end2end_nosec_tests.c',
+                      'test/core/end2end/end2end_test_utils.c'] + [
                   'test/core/end2end/tests/%s.c' % t
                   for t in sorted(END2END_TESTS.keys())
                   if not END2END_TESTS[t].secure],
diff --git a/test/core/end2end/tests/bad_hostname.c b/test/core/end2end/tests/bad_hostname.c
index 85258dd288..e0c7ac7c02 100644
--- a/test/core/end2end/tests/bad_hostname.c
+++ b/test/core/end2end/tests/bad_hostname.c
@@ -54,7 +54,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   grpc_end2end_test_fixture f;
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   config.init_server(&f, server_args);
   return f;
 }
diff --git a/test/core/end2end/tests/binary_metadata.c b/test/core/end2end/tests/binary_metadata.c
index b0d18191e0..a13613a472 100644
--- a/test/core/end2end/tests/binary_metadata.c
+++ b/test/core/end2end/tests/binary_metadata.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -148,8 +148,10 @@ static void test_request_response_with_metadata_and_payload(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -250,7 +252,8 @@ static void test_request_response_with_metadata_and_payload(
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 0);
   GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, "hello world"));
   GPR_ASSERT(byte_buffer_eq_string(response_payload_recv, "hello you"));
diff --git a/test/core/end2end/tests/call_creds.c b/test/core/end2end/tests/call_creds.c
index 05a379cf1b..606938fff6 100644
--- a/test/core/end2end/tests/call_creds.c
+++ b/test/core/end2end/tests/call_creds.c
@@ -61,7 +61,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   grpc_end2end_test_fixture f;
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(NULL, NULL);
-  config.init_client(&f, NULL, NULL);
+  config.init_client(&f, NULL);
   if (fail_server_auth_check) {
     grpc_arg fail_auth_arg = {
         GRPC_ARG_STRING, FAIL_AUTH_CHECK_SERVER_ARG_NAME, {NULL}};
@@ -166,8 +166,10 @@ static void request_response_with_payload_and_call_creds(
   f = begin_test(config, test_name, 0);
   cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
   creds = grpc_google_iam_credentials_create(iam_token, iam_selector, NULL);
   GPR_ASSERT(creds != NULL);
@@ -296,7 +298,8 @@ static void request_response_with_payload_and_call_creds(
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 0);
   GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, "hello world"));
   GPR_ASSERT(byte_buffer_eq_string(response_payload_recv, "hello you"));
@@ -400,8 +403,10 @@ static void test_request_with_server_rejecting_client_creds(
   f = begin_test(config, "test_request_with_server_rejecting_client_creds", 1);
   cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   creds = grpc_google_iam_credentials_create(iam_token, iam_selector, NULL);
diff --git a/test/core/end2end/tests/cancel_after_accept.c b/test/core/end2end/tests/cancel_after_accept.c
index f67da2d90d..c0beb456ad 100644
--- a/test/core/end2end/tests/cancel_after_accept.c
+++ b/test/core/end2end/tests/cancel_after_accept.c
@@ -41,6 +41,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/method_config.h"
+
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/end2end/tests/cancel_test_helpers.h"
 
@@ -49,13 +54,12 @@ static void *tag(intptr_t t) { return (void *)t; }
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
                                             grpc_channel_args *client_args,
-                                            grpc_channel_args *server_args,
-                                            const char *query_args) {
+                                            grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, query_args);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -128,19 +132,33 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   int was_cancelled = 2;
 
-  const char *query_args = NULL;
+  grpc_channel_args *args = NULL;
   if (use_service_config) {
-    query_args =
-        "method_name=/service/method"
-        "&timeout_seconds=5";
+    gpr_timespec timeout = {5, 0, GPR_TIMESPAN};
+    grpc_method_config_table_entry entry = {
+        grpc_mdstr_from_string("/service/method"),
+        grpc_method_config_create(NULL, &timeout, NULL, NULL),
+    };
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_method_config_table *method_config_table =
+        grpc_method_config_table_create(1, &entry);
+    GRPC_MDSTR_UNREF(&exec_ctx, entry.method_name);
+    grpc_method_config_unref(&exec_ctx, entry.method_config);
+    grpc_arg arg =
+        grpc_method_config_table_create_channel_arg(method_config_table);
+    args = grpc_channel_args_copy_and_add(args, &arg, 1);
+    grpc_method_config_table_unref(&exec_ctx, method_config_table);
+    grpc_exec_ctx_finish(&exec_ctx);
   }
+
   grpc_end2end_test_fixture f =
-      begin_test(config, "cancel_after_accept", NULL, NULL, query_args);
+      begin_test(config, "cancel_after_accept", args, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/service/method", "foo.test.google.fr",
-                               deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/service/method",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -235,6 +253,12 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
+  if (args != NULL) {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
   cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
@@ -246,15 +270,10 @@ void cancel_after_accept(grpc_end2end_test_config config) {
   for (i = 0; i < GPR_ARRAY_SIZE(cancellation_modes); i++) {
     test_cancel_after_accept(config, cancellation_modes[i],
                              false /* use_service_config */);
-  }
-
-  if (config.feature_mask & FEATURE_MASK_SUPPORTS_QUERY_ARGS) {
-    for (i = 0; i < GPR_ARRAY_SIZE(cancellation_modes); i++) {
-      if (cancellation_modes[i].expect_status ==
-          GRPC_STATUS_DEADLINE_EXCEEDED) {
-        test_cancel_after_accept(config, cancellation_modes[i],
-                                 true /* use_service_config */);
-      }
+    if (config.feature_mask & FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL &&
+        cancellation_modes[i].expect_status == GRPC_STATUS_DEADLINE_EXCEEDED) {
+      test_cancel_after_accept(config, cancellation_modes[i],
+                               true /* use_service_config */);
     }
   }
 }
diff --git a/test/core/end2end/tests/cancel_after_client_done.c b/test/core/end2end/tests/cancel_after_client_done.c
index 44be85435d..7742f9d179 100644
--- a/test/core/end2end/tests/cancel_after_client_done.c
+++ b/test/core/end2end/tests/cancel_after_client_done.c
@@ -54,7 +54,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -127,8 +127,10 @@ static void test_cancel_after_accept_and_writes_closed(
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
diff --git a/test/core/end2end/tests/cancel_after_invoke.c b/test/core/end2end/tests/cancel_after_invoke.c
index c276f5e2fa..c3c5418f20 100644
--- a/test/core/end2end/tests/cancel_after_invoke.c
+++ b/test/core/end2end/tests/cancel_after_invoke.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s/%s", test_name, config.name, mode.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -121,8 +121,10 @@ static void test_cancel_after_invoke(grpc_end2end_test_config config,
   grpc_byte_buffer *request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
diff --git a/test/core/end2end/tests/cancel_before_invoke.c b/test/core/end2end/tests/cancel_before_invoke.c
index e33b120a5b..d4842829c0 100644
--- a/test/core/end2end/tests/cancel_before_invoke.c
+++ b/test/core/end2end/tests/cancel_before_invoke.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -119,8 +119,10 @@ static void test_cancel_before_invoke(grpc_end2end_test_config config,
   grpc_byte_buffer *request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_cancel(c, NULL));
diff --git a/test/core/end2end/tests/cancel_in_a_vacuum.c b/test/core/end2end/tests/cancel_in_a_vacuum.c
index 7f75a92e4a..5be850b6ea 100644
--- a/test/core/end2end/tests/cancel_in_a_vacuum.c
+++ b/test/core/end2end/tests/cancel_in_a_vacuum.c
@@ -54,7 +54,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -105,8 +105,10 @@ static void test_cancel_in_a_vacuum(grpc_end2end_test_config config,
   gpr_timespec deadline = five_seconds_time();
   cq_verifier *v_client = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   GPR_ASSERT(GRPC_CALL_OK == mode.initiate_cancel(c, NULL));
diff --git a/test/core/end2end/tests/cancel_with_status.c b/test/core/end2end/tests/cancel_with_status.c
index 5cf3eb6be6..3aecaf7159 100644
--- a/test/core/end2end/tests/cancel_with_status.c
+++ b/test/core/end2end/tests/cancel_with_status.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -97,7 +97,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f, size_t num_ops) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f, size_t num_ops) {
   grpc_call *c;
   gpr_timespec deadline = five_seconds_time();
   cq_verifier *cqv = cq_verifier_create(f.cq);
@@ -112,9 +113,10 @@ static void simple_request_body(grpc_end2end_test_fixture f, size_t num_ops) {
 
   gpr_log(GPR_DEBUG, "test with %" PRIuPTR " ops", num_ops);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -170,7 +172,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config,
   grpc_end2end_test_fixture f;
 
   f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
-  simple_request_body(f, num_ops);
+  simple_request_body(config, f, num_ops);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/compressed_payload.c b/test/core/end2end/tests/compressed_payload.c
index 4ed24baf67..d7efe7747b 100644
--- a/test/core/end2end/tests/compressed_payload.c
+++ b/test/core/end2end/tests/compressed_payload.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -140,14 +140,20 @@ static void request_for_disabled_algorithm(
       NULL, requested_client_compression_algorithm);
   server_args =
       grpc_channel_args_set_compression_algorithm(NULL, GRPC_COMPRESS_NONE);
-  server_args = grpc_channel_args_compression_algorithm_set_state(
-      &server_args, algorithm_to_disable, false);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    server_args = grpc_channel_args_compression_algorithm_set_state(
+        &exec_ctx, &server_args, algorithm_to_disable, false);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   f = begin_test(config, test_name, client_args, server_args);
   cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -242,7 +248,8 @@ static void request_for_disabled_algorithm(
   GPR_ASSERT(0 == strcmp(details, expected_details));
   gpr_free(expected_details);
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -259,8 +266,12 @@ static void request_for_disabled_algorithm(
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(request_payload_recv);
 
-  grpc_channel_args_destroy(client_args);
-  grpc_channel_args_destroy(server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   end_test(&f);
   config.tear_down_data(&f);
@@ -319,8 +330,10 @@ static void request_with_payload_template(
   f = begin_test(config, test_name, client_args, server_args);
   cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -492,7 +505,8 @@ static void request_with_payload_template(
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 0);
 
   gpr_free(details);
@@ -506,8 +520,12 @@ static void request_with_payload_template(
 
   cq_verifier_destroy(cqv);
 
-  grpc_channel_args_destroy(client_args);
-  grpc_channel_args_destroy(server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/connectivity.c b/test/core/end2end/tests/connectivity.c
index 4a99165666..260297ebd4 100644
--- a/test/core/end2end/tests/connectivity.c
+++ b/test/core/end2end/tests/connectivity.c
@@ -68,7 +68,7 @@ static void test_connectivity(grpc_end2end_test_config config) {
   gpr_thd_options thdopt = gpr_thd_options_default();
   gpr_thd_id thdid;
 
-  config.init_client(&f, NULL, NULL);
+  config.init_client(&f, NULL);
 
   ce.channel = f.client;
   ce.cq = f.cq;
diff --git a/test/core/end2end/tests/default_host.c b/test/core/end2end/tests/default_host.c
index 5b32b50c03..208e31697e 100644
--- a/test/core/end2end/tests/default_host.c
+++ b/test/core/end2end/tests/default_host.c
@@ -54,7 +54,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   grpc_end2end_test_fixture f;
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   config.init_server(&f, server_args);
   return f;
 }
diff --git a/test/core/end2end/tests/disappearing_server.c b/test/core/end2end/tests/disappearing_server.c
index d8d76f8c38..8ebf7e643e 100644
--- a/test/core/end2end/tests/disappearing_server.c
+++ b/test/core/end2end/tests/disappearing_server.c
@@ -79,7 +79,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
+static void do_request_and_shutdown_server(grpc_end2end_test_config config,
+                                           grpc_end2end_test_fixture *f,
                                            cq_verifier *cqv) {
   grpc_call *c;
   grpc_call *s;
@@ -96,9 +97,10 @@ static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f->client, NULL, GRPC_PROPAGATE_DEFAULTS, f->cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f->client, NULL, GRPC_PROPAGATE_DEFAULTS, f->cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -174,7 +176,8 @@ static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
@@ -193,15 +196,15 @@ static void disappearing_server_test(grpc_end2end_test_config config) {
 
   gpr_log(GPR_INFO, "%s/%s", "disappearing_server_test", config.name);
 
-  config.init_client(&f, NULL, NULL);
+  config.init_client(&f, NULL);
   config.init_server(&f, NULL);
 
-  do_request_and_shutdown_server(&f, cqv);
+  do_request_and_shutdown_server(config, &f, cqv);
 
   /* now destroy and recreate the server */
   config.init_server(&f, NULL);
 
-  do_request_and_shutdown_server(&f, cqv);
+  do_request_and_shutdown_server(config, &f, cqv);
 
   cq_verifier_destroy(cqv);
 
diff --git a/test/core/end2end/tests/empty_batch.c b/test/core/end2end/tests/empty_batch.c
index bc27b1ac14..dc8e52a60f 100644
--- a/test/core/end2end/tests/empty_batch.c
+++ b/test/core/end2end/tests/empty_batch.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -97,15 +97,18 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void empty_batch_body(grpc_end2end_test_fixture f) {
+static void empty_batch_body(grpc_end2end_test_config config,
+                             grpc_end2end_test_fixture f) {
   grpc_call *c;
   gpr_timespec deadline = five_seconds_time();
   cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_call_error error;
   grpc_op *op = NULL;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   error = grpc_call_start_batch(c, op, 0, tag(1), NULL);
@@ -122,7 +125,7 @@ static void test_invoke_empty_body(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f;
 
   f = begin_test(config, "test_invoke_empty_body", NULL, NULL);
-  empty_batch_body(f);
+  empty_batch_body(config, f);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/filter_call_init_fails.c b/test/core/end2end/tests/filter_call_init_fails.c
index b180957d4f..01b6c32ee7 100644
--- a/test/core/end2end/tests/filter_call_init_fails.c
+++ b/test/core/end2end/tests/filter_call_init_fails.c
@@ -61,7 +61,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -128,8 +128,10 @@ static void test_request(grpc_end2end_test_config config) {
   char *details = NULL;
   size_t details_capacity = 0;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -232,13 +234,15 @@ static const grpc_channel_filter test_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "filter_call_init_fails"};
 
 /*******************************************************************************
  * Registration
  */
 
-static bool maybe_add_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool maybe_add_filter(grpc_exec_ctx *exec_ctx,
+                             grpc_channel_stack_builder *builder, void *arg) {
   if (g_enable_filter) {
     // Want to add the filter as close to the end as possible, to make
     // sure that all of the filters work well together.  However, we
diff --git a/test/core/end2end/tests/filter_causes_close.c b/test/core/end2end/tests/filter_causes_close.c
index 943a3df90d..def21be43f 100644
--- a/test/core/end2end/tests/filter_causes_close.c
+++ b/test/core/end2end/tests/filter_causes_close.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -124,8 +124,10 @@ static void test_request(grpc_end2end_test_config config) {
   char *details = NULL;
   size_t details_capacity = 0;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -211,8 +213,8 @@ static void recv_im_ready(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_slice message =
         grpc_slice_from_copied_string("Failure that's not preventable.");
     grpc_transport_stream_op *op = grpc_make_transport_stream_op(NULL);
-    grpc_transport_stream_op_add_close(op, GRPC_STATUS_PERMISSION_DENIED,
-                                       &message);
+    grpc_transport_stream_op_add_close(exec_ctx, op,
+                                       GRPC_STATUS_PERMISSION_DENIED, &message);
     grpc_call_next_op(exec_ctx, elem, op);
   }
   grpc_exec_ctx_sched(
@@ -259,13 +261,15 @@ static const grpc_channel_filter test_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "filter_causes_close"};
 
 /*******************************************************************************
  * Registration
  */
 
-static bool maybe_add_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool maybe_add_filter(grpc_exec_ctx *exec_ctx,
+                             grpc_channel_stack_builder *builder, void *arg) {
   if (g_enable_filter) {
     return grpc_channel_stack_builder_prepend_filter(builder, &test_filter,
                                                      NULL, NULL);
diff --git a/test/core/end2end/tests/graceful_server_shutdown.c b/test/core/end2end/tests/graceful_server_shutdown.c
index e098a63f8b..5fecadbe44 100644
--- a/test/core/end2end/tests/graceful_server_shutdown.c
+++ b/test/core/end2end/tests/graceful_server_shutdown.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -111,8 +111,10 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -190,7 +192,8 @@ static void test_early_server_shutdown_finishes_inflight_calls(
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
diff --git a/test/core/end2end/tests/high_initial_seqno.c b/test/core/end2end/tests/high_initial_seqno.c
index 193706b8cf..01a4909ccd 100644
--- a/test/core/end2end/tests/high_initial_seqno.c
+++ b/test/core/end2end/tests/high_initial_seqno.c
@@ -57,7 +57,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -99,7 +99,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -116,9 +117,10 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -189,7 +191,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
@@ -229,7 +232,7 @@ static void test_invoke_10_simple_requests(grpc_end2end_test_config config,
                initial_sequence_number);
   f = begin_test(config, name, &client_args, NULL);
   for (i = 0; i < 10; i++) {
-    simple_request_body(f);
+    simple_request_body(config, f);
     gpr_log(GPR_INFO, "Passed simple request %d", i);
   }
   end_test(&f);
diff --git a/test/core/end2end/tests/hpack_size.c b/test/core/end2end/tests/hpack_size.c
index 78afdb5594..cec8b2faae 100644
--- a/test/core/end2end/tests/hpack_size.c
+++ b/test/core/end2end/tests/hpack_size.c
@@ -197,7 +197,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -239,7 +239,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f, size_t index) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f, size_t index) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -268,9 +269,10 @@ static void simple_request_body(grpc_end2end_test_fixture f, size_t index) {
   extra_metadata[2].value = dragons[index % GPR_ARRAY_SIZE(dragons)];
   extra_metadata[2].value_length = strlen(extra_metadata[2].value);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -342,7 +344,8 @@ static void simple_request_body(grpc_end2end_test_fixture f, size_t index) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
@@ -383,7 +386,7 @@ static void test_size(grpc_end2end_test_config config, int encode_size,
   f = begin_test(config, name, encode_size != 4096 ? &client_args : NULL,
                  decode_size != 4096 ? &server_args : NULL);
   for (i = 0; i < 4 * GPR_ARRAY_SIZE(hobbits); i++) {
-    simple_request_body(f, i);
+    simple_request_body(config, f, i);
   }
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/idempotent_request.c b/test/core/end2end/tests/idempotent_request.c
index b53e00386b..4f6d3bb808 100644
--- a/test/core/end2end/tests/idempotent_request.c
+++ b/test/core/end2end/tests/idempotent_request.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -97,7 +97,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -115,9 +116,10 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   int was_cancelled = 2;
   char *peer;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   peer = grpc_call_get_peer(c);
@@ -202,7 +204,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST == call_details.flags);
   GPR_ASSERT(was_cancelled == 1);
 
@@ -222,7 +225,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f;
 
   f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
-  simple_request_body(f);
+  simple_request_body(config, f);
   end_test(&f);
   config.tear_down_data(&f);
 }
@@ -232,7 +235,7 @@ static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f =
       begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
   for (i = 0; i < 10; i++) {
-    simple_request_body(f);
+    simple_request_body(config, f);
     gpr_log(GPR_INFO, "Passed simple request %d", i);
   }
   end_test(&f);
diff --git a/test/core/end2end/tests/invoke_large_request.c b/test/core/end2end/tests/invoke_large_request.c
index 41d5627b59..24abfa2ea0 100644
--- a/test/core/end2end/tests/invoke_large_request.c
+++ b/test/core/end2end/tests/invoke_large_request.c
@@ -54,7 +54,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -144,8 +144,10 @@ static void test_invoke_large_request(grpc_end2end_test_config config,
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -244,7 +246,8 @@ static void test_invoke_large_request(grpc_end2end_test_config config,
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
diff --git a/test/core/end2end/tests/large_metadata.c b/test/core/end2end/tests/large_metadata.c
index 26a4eef7d9..69b4b24b06 100644
--- a/test/core/end2end/tests/large_metadata.c
+++ b/test/core/end2end/tests/large_metadata.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -126,8 +126,10 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   meta.key = "key";
@@ -228,7 +230,8 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 0);
   GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, "hello world"));
   GPR_ASSERT(contains_metadata(&request_metadata_recv, "key", meta.value));
diff --git a/test/core/end2end/tests/load_reporting_hook.c b/test/core/end2end/tests/load_reporting_hook.c
index 046e0c321b..ae5c270629 100644
--- a/test/core/end2end/tests/load_reporting_hook.c
+++ b/test/core/end2end/tests/load_reporting_hook.c
@@ -78,7 +78,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
 
   return f;
 }
@@ -121,12 +121,10 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void request_response_with_payload(grpc_end2end_test_fixture f,
-                                          const char *method_name,
-                                          const char *request_msg,
-                                          const char *response_msg,
-                                          grpc_metadata *initial_lr_metadata,
-                                          grpc_metadata *trailing_lr_metadata) {
+static void request_response_with_payload(
+    grpc_end2end_test_config config, grpc_end2end_test_fixture f,
+    const char *method_name, const char *request_msg, const char *response_msg,
+    grpc_metadata *initial_lr_metadata, grpc_metadata *trailing_lr_metadata) {
   grpc_slice request_payload_slice = grpc_slice_from_static_string(request_msg);
   grpc_slice response_payload_slice =
       grpc_slice_from_static_string(response_msg);
@@ -152,9 +150,10 @@ static void request_response_with_payload(grpc_end2end_test_fixture f,
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               method_name, "foo.test.google.fr", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, method_name,
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -308,10 +307,15 @@ static void test_load_reporting_hook(grpc_end2end_test_config config) {
   memset(&trailing_lr_metadata.internal_data, 0,
          sizeof(trailing_lr_metadata.internal_data));
 
-  request_response_with_payload(f, method_name, request_msg, response_msg,
-                                &initial_lr_metadata, &trailing_lr_metadata);
+  request_response_with_payload(config, f, method_name, request_msg,
+                                response_msg, &initial_lr_metadata,
+                                &trailing_lr_metadata);
   end_test(&f);
-  grpc_channel_args_destroy(lr_server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, lr_server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   config.tear_down_data(&f);
 }
 
diff --git a/test/core/end2end/tests/max_concurrent_streams.c b/test/core/end2end/tests/max_concurrent_streams.c
index 6c7bf9f531..9338bc5f0d 100644
--- a/test/core/end2end/tests/max_concurrent_streams.c
+++ b/test/core/end2end/tests/max_concurrent_streams.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -95,7 +95,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -112,9 +113,10 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -185,7 +187,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
@@ -250,20 +253,22 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
 
   /* perform a ping-pong to ensure that settings have had a chance to round
      trip */
-  simple_request_body(f);
+  simple_request_body(config, f);
   /* perform another one to make sure that the one stream case still works */
-  simple_request_body(f);
+  simple_request_body(config, f);
 
   /* start two requests - ensuring that the second is not accepted until
      the first completes */
   deadline = n_seconds_time(1000);
-  c1 = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                                "/alpha", "foo.test.google.fr:1234", deadline,
-                                NULL);
+  c1 = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/alpha",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c1);
-  c2 = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                                "/beta", "foo.test.google.fr:1234", deadline,
-                                NULL);
+  c2 = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/beta",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c2);
 
   GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index 559b00d828..ec85f3cb5d 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -41,6 +41,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/method_config.h"
+
 #include "test/core/end2end/cq_verifier.h"
 
 static void *tag(intptr_t t) { return (void *)t; }
@@ -48,8 +53,7 @@ static void *tag(intptr_t t) { return (void *)t; }
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
                                             grpc_channel_args *client_args,
-                                            grpc_channel_args *server_args,
-                                            const char *query_args) {
+                                            grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   // We intentionally do not pass the client and server args to
@@ -57,7 +61,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   // proxy, only on the backend server.
   f = config.create_fixture(NULL, NULL);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, query_args);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -109,8 +113,6 @@ static void test_max_message_length_on_request(grpc_end2end_test_config config,
           send_limit, use_service_config);
 
   grpc_end2end_test_fixture f;
-  grpc_arg channel_arg;
-  grpc_channel_args channel_args;
   grpc_call *c = NULL;
   grpc_call *s = NULL;
   cq_verifier *cqv;
@@ -131,37 +133,56 @@ static void test_max_message_length_on_request(grpc_end2end_test_config config,
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  char *query_args = NULL;
   grpc_channel_args *client_args = NULL;
   grpc_channel_args *server_args = NULL;
   if (use_service_config) {
     // We don't currently support service configs on the server side.
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     GPR_ASSERT(send_limit);
-    query_args =
-        "method_name=/service/method"
-        "&max_request_message_bytes=5";
+    int32_t max_request_message_bytes = 5;
+    grpc_method_config_table_entry entry = {
+        grpc_mdstr_from_string("/service/method"),
+        grpc_method_config_create(NULL, NULL, &max_request_message_bytes, NULL),
+    };
+    grpc_method_config_table *method_config_table =
+        grpc_method_config_table_create(1, &entry);
+    GRPC_MDSTR_UNREF(&exec_ctx, entry.method_name);
+    grpc_method_config_unref(&exec_ctx, entry.method_config);
+    grpc_arg arg =
+        grpc_method_config_table_create_channel_arg(method_config_table);
+    client_args = grpc_channel_args_copy_and_add(NULL, &arg, 1);
+    grpc_method_config_table_unref(&exec_ctx, method_config_table);
+    grpc_exec_ctx_finish(&exec_ctx);
   } else {
     // Set limit via channel args.
-    channel_arg.key = send_limit ? GRPC_ARG_MAX_SEND_MESSAGE_LENGTH
-                                 : GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH;
-    channel_arg.type = GRPC_ARG_INTEGER;
-    channel_arg.value.integer = 5;
-    channel_args.num_args = 1;
-    channel_args.args = &channel_arg;
+    grpc_arg arg;
+    arg.key = send_limit ? GRPC_ARG_MAX_SEND_MESSAGE_LENGTH
+                         : GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH;
+    arg.type = GRPC_ARG_INTEGER;
+    arg.value.integer = 5;
+    grpc_channel_args *args = grpc_channel_args_copy_and_add(NULL, &arg, 1);
     if (send_limit) {
-      client_args = &channel_args;
+      client_args = args;
     } else {
-      server_args = &channel_args;
+      server_args = args;
     }
   }
 
   f = begin_test(config, "test_max_request_message_length", client_args,
-                 server_args, query_args);
+                 server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    if (client_args != NULL) grpc_channel_args_destroy(&exec_ctx, client_args);
+    if (server_args != NULL) grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
   cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/service/method", "foo.test.google.fr:1234",
-                               gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/service/method",
+      get_host_override_string("foo.test.google.fr:1234", config),
+      gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -234,7 +255,8 @@ static void test_max_message_length_on_request(grpc_end2end_test_config config,
   cq_verify(cqv);
 
   GPR_ASSERT(0 == strcmp(call_details.method, "/service/method"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
 done:
@@ -271,8 +293,6 @@ static void test_max_message_length_on_response(grpc_end2end_test_config config,
           send_limit, use_service_config);
 
   grpc_end2end_test_fixture f;
-  grpc_arg channel_arg;
-  grpc_channel_args channel_args;
   grpc_call *c = NULL;
   grpc_call *s = NULL;
   cq_verifier *cqv;
@@ -293,32 +313,50 @@ static void test_max_message_length_on_response(grpc_end2end_test_config config,
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  char *query_args = NULL;
   grpc_channel_args *client_args = NULL;
   grpc_channel_args *server_args = NULL;
   if (use_service_config) {
     // We don't currently support service configs on the server side.
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     GPR_ASSERT(!send_limit);
-    query_args =
-        "method_name=/service/method"
-        "&max_response_message_bytes=5";
+    int32_t max_response_message_bytes = 5;
+    grpc_method_config_table_entry entry = {
+        grpc_mdstr_from_string("/service/method"),
+        grpc_method_config_create(NULL, NULL, NULL,
+                                  &max_response_message_bytes),
+    };
+    grpc_method_config_table *method_config_table =
+        grpc_method_config_table_create(1, &entry);
+    GRPC_MDSTR_UNREF(&exec_ctx, entry.method_name);
+    grpc_method_config_unref(&exec_ctx, entry.method_config);
+    grpc_arg arg =
+        grpc_method_config_table_create_channel_arg(method_config_table);
+    client_args = grpc_channel_args_copy_and_add(NULL, &arg, 1);
+    grpc_method_config_table_unref(&exec_ctx, method_config_table);
+    grpc_exec_ctx_finish(&exec_ctx);
   } else {
     // Set limit via channel args.
-    channel_arg.key = send_limit ? GRPC_ARG_MAX_SEND_MESSAGE_LENGTH
-                                 : GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH;
-    channel_arg.type = GRPC_ARG_INTEGER;
-    channel_arg.value.integer = 5;
-    channel_args.num_args = 1;
-    channel_args.args = &channel_arg;
+    grpc_arg arg;
+    arg.key = send_limit ? GRPC_ARG_MAX_SEND_MESSAGE_LENGTH
+                         : GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH;
+    arg.type = GRPC_ARG_INTEGER;
+    arg.value.integer = 5;
+    grpc_channel_args *args = grpc_channel_args_copy_and_add(NULL, &arg, 1);
     if (send_limit) {
-      server_args = &channel_args;
+      server_args = args;
     } else {
-      client_args = &channel_args;
+      client_args = args;
     }
   }
 
   f = begin_test(config, "test_max_response_message_length", client_args,
-                 server_args, query_args);
+                 server_args);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    if (client_args != NULL) grpc_channel_args_destroy(&exec_ctx, client_args);
+    if (server_args != NULL) grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
   cqv = cq_verifier_create(f.cq);
 
   c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
@@ -436,12 +474,10 @@ void max_message_length(grpc_end2end_test_config config) {
                                       false /* use_service_config */);
   test_max_message_length_on_response(config, true /* send_limit */,
                                       false /* use_service_config */);
-  if (config.feature_mask & FEATURE_MASK_SUPPORTS_QUERY_ARGS) {
-    test_max_message_length_on_request(config, true /* send_limit */,
-                                       true /* use_service_config */);
-    test_max_message_length_on_response(config, false /* send_limit */,
-                                        true /* use_service_config */);
-  }
+  test_max_message_length_on_request(config, true /* send_limit */,
+                                     true /* use_service_config */);
+  test_max_message_length_on_response(config, false /* send_limit */,
+                                      true /* use_service_config */);
 }
 
 void max_message_length_pre_init(void) {}
diff --git a/test/core/end2end/tests/negative_deadline.c b/test/core/end2end/tests/negative_deadline.c
index 12c6a0f2bd..929777d39e 100644
--- a/test/core/end2end/tests/negative_deadline.c
+++ b/test/core/end2end/tests/negative_deadline.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -97,7 +97,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f, size_t num_ops) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f, size_t num_ops) {
   grpc_call *c;
   gpr_timespec deadline = gpr_inf_past(GPR_CLOCK_REALTIME);
   cq_verifier *cqv = cq_verifier_create(f.cq);
@@ -112,9 +113,10 @@ static void simple_request_body(grpc_end2end_test_fixture f, size_t num_ops) {
 
   gpr_log(GPR_DEBUG, "test with %" PRIuPTR " ops", num_ops);
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -167,7 +169,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config,
   grpc_end2end_test_fixture f;
 
   f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
-  simple_request_body(f, num_ops);
+  simple_request_body(config, f, num_ops);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/network_status_change.c b/test/core/end2end/tests/network_status_change.c
index 84447e6a2f..2ebda2ccb8 100644
--- a/test/core/end2end/tests/network_status_change.c
+++ b/test/core/end2end/tests/network_status_change.c
@@ -56,7 +56,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -123,8 +123,10 @@ static void test_invoke_network_status_change(grpc_end2end_test_config config) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -213,7 +215,8 @@ static void test_invoke_network_status_change(grpc_end2end_test_config config) {
   // Expected behavior of a RPC when network is lost.
   GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
diff --git a/test/core/end2end/tests/no_logging.c b/test/core/end2end/tests/no_logging.c
index 8f9ef78ba2..54614cb029 100644
--- a/test/core/end2end/tests/no_logging.c
+++ b/test/core/end2end/tests/no_logging.c
@@ -83,7 +83,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -125,7 +125,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -143,9 +144,10 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   int was_cancelled = 2;
   char *peer;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   peer = grpc_call_get_peer(c);
@@ -227,7 +229,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(0 == call_details.flags);
   GPR_ASSERT(was_cancelled == 1);
 
@@ -248,7 +251,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config) {
 
   f = begin_test(config, "test_invoke_simple_request_with_no_error_logging",
                  NULL, NULL);
-  simple_request_body(f);
+  simple_request_body(config, f);
   end_test(&f);
   config.tear_down_data(&f);
 }
@@ -259,10 +262,10 @@ static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
       begin_test(config, "test_invoke_10_simple_requests_with_no_error_logging",
                  NULL, NULL);
   for (i = 0; i < 10; i++) {
-    simple_request_body(f);
+    simple_request_body(config, f);
     gpr_log(GPR_INFO, "Passed simple request %d", i);
   }
-  simple_request_body(f);
+  simple_request_body(config, f);
   end_test(&f);
   config.tear_down_data(&f);
 }
@@ -283,10 +286,10 @@ static void test_no_logging_in_one_request(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f =
       begin_test(config, "test_no_logging_in_last_request", NULL, NULL);
   for (i = 0; i < 10; i++) {
-    simple_request_body(f);
+    simple_request_body(config, f);
   }
   gpr_atm_no_barrier_store(&g_log_func, (gpr_atm)test_no_log);
-  simple_request_body(f);
+  simple_request_body(config, f);
   gpr_atm_no_barrier_store(&g_log_func, (gpr_atm)gpr_default_log);
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/no_op.c b/test/core/end2end/tests/no_op.c
index a1c61cb8d1..8b29c219dc 100644
--- a/test/core/end2end/tests/no_op.c
+++ b/test/core/end2end/tests/no_op.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
diff --git a/test/core/end2end/tests/payload.c b/test/core/end2end/tests/payload.c
index 01ba964ef0..db2e5c83de 100644
--- a/test/core/end2end/tests/payload.c
+++ b/test/core/end2end/tests/payload.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -112,7 +112,8 @@ static grpc_slice generate_random_slice() {
   return out;
 }
 
-static void request_response_with_payload(grpc_end2end_test_fixture f) {
+static void request_response_with_payload(grpc_end2end_test_config config,
+                                          grpc_end2end_test_fixture f) {
   /* Create large request and response bodies. These are big enough to require
    * multiple round trips to deliver to the peer, and their exact contents of
    * will be verified on completion. */
@@ -141,8 +142,10 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -241,7 +244,8 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 0);
   GPR_ASSERT(byte_buffer_eq_slice(request_payload_recv, request_payload_slice));
   GPR_ASSERT(
@@ -270,7 +274,7 @@ static void test_invoke_request_response_with_payload(
     grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f = begin_test(
       config, "test_invoke_request_response_with_payload", NULL, NULL);
-  request_response_with_payload(f);
+  request_response_with_payload(config, f);
   end_test(&f);
   config.tear_down_data(&f);
 }
@@ -281,7 +285,7 @@ static void test_invoke_10_request_response_with_payload(
   grpc_end2end_test_fixture f = begin_test(
       config, "test_invoke_10_request_response_with_payload", NULL, NULL);
   for (i = 0; i < 10; i++) {
-    request_response_with_payload(f);
+    request_response_with_payload(config, f);
   }
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/ping.c b/test/core/end2end/tests/ping.c
index f7e119cc2f..5e5169dedc 100644
--- a/test/core/end2end/tests/ping.c
+++ b/test/core/end2end/tests/ping.c
@@ -48,7 +48,7 @@ static void test_ping(grpc_end2end_test_config config) {
   grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
   int i;
 
-  config.init_client(&f, NULL, NULL);
+  config.init_client(&f, NULL);
   config.init_server(&f, NULL);
 
   grpc_channel_ping(f.client, f.cq, tag(0), NULL);
diff --git a/test/core/end2end/tests/ping_pong_streaming.c b/test/core/end2end/tests/ping_pong_streaming.c
index 317788f7fa..0a1566e9c2 100644
--- a/test/core/end2end/tests/ping_pong_streaming.c
+++ b/test/core/end2end/tests/ping_pong_streaming.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -125,9 +125,10 @@ static void test_pingpong_streaming(grpc_end2end_test_config config,
   grpc_slice response_payload_slice =
       grpc_slice_from_copied_string("hello you");
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
diff --git a/test/core/end2end/tests/registered_call.c b/test/core/end2end/tests/registered_call.c
index 4c094e1b8b..6594b420b9 100644
--- a/test/core/end2end/tests/registered_call.c
+++ b/test/core/end2end/tests/registered_call.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -97,7 +97,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f, void *rc) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -186,7 +187,8 @@ static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
@@ -204,10 +206,11 @@ static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
 static void test_invoke_simple_request(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f =
       begin_test(config, "test_invoke_simple_request", NULL, NULL);
-  void *rc = grpc_channel_register_call(f.client, "/foo",
-                                        "foo.test.google.fr:1234", NULL);
+  void *rc = grpc_channel_register_call(
+      f.client, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), NULL);
 
-  simple_request_body(f, rc);
+  simple_request_body(config, f, rc);
   end_test(&f);
   config.tear_down_data(&f);
 }
@@ -216,11 +219,12 @@ static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
   int i;
   grpc_end2end_test_fixture f =
       begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
-  void *rc = grpc_channel_register_call(f.client, "/foo",
-                                        "foo.test.google.fr:1234", NULL);
+  void *rc = grpc_channel_register_call(
+      f.client, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), NULL);
 
   for (i = 0; i < 10; i++) {
-    simple_request_body(f, rc);
+    simple_request_body(config, f, rc);
     gpr_log(GPR_INFO, "Passed simple request %d", i);
   }
   end_test(&f);
diff --git a/test/core/end2end/tests/request_with_flags.c b/test/core/end2end/tests/request_with_flags.c
index 8649c1563f..9c18e155f3 100644
--- a/test/core/end2end/tests/request_with_flags.c
+++ b/test/core/end2end/tests/request_with_flags.c
@@ -54,7 +54,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -121,8 +121,10 @@ static void test_invoke_request_with_flags(
   size_t details_capacity = 0;
   grpc_call_error expectation;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
diff --git a/test/core/end2end/tests/request_with_payload.c b/test/core/end2end/tests/request_with_payload.c
index 144cd58ec0..c84e3ac5b5 100644
--- a/test/core/end2end/tests/request_with_payload.c
+++ b/test/core/end2end/tests/request_with_payload.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -120,8 +120,10 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -209,7 +211,8 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 0);
   GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, "hello world"));
 
diff --git a/test/core/end2end/tests/resource_quota_server.c b/test/core/end2end/tests/resource_quota_server.c
index 1dcbf587a4..7ec33e97a3 100644
--- a/test/core/end2end/tests/resource_quota_server.c
+++ b/test/core/end2end/tests/resource_quota_server.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -138,17 +138,22 @@ void resource_quota_server(grpc_end2end_test_config config) {
    * will be verified on completion. */
   grpc_slice request_payload_slice = generate_random_slice();
 
-  grpc_call *client_calls[NUM_CALLS];
-  grpc_call *server_calls[NUM_CALLS];
-  grpc_metadata_array initial_metadata_recv[NUM_CALLS];
-  grpc_metadata_array trailing_metadata_recv[NUM_CALLS];
-  grpc_metadata_array request_metadata_recv[NUM_CALLS];
-  grpc_call_details call_details[NUM_CALLS];
-  grpc_status_code status[NUM_CALLS];
-  char *details[NUM_CALLS];
-  size_t details_capacity[NUM_CALLS];
-  grpc_byte_buffer *request_payload_recv[NUM_CALLS];
-  int was_cancelled[NUM_CALLS];
+  grpc_call **client_calls = malloc(sizeof(grpc_call *) * NUM_CALLS);
+  grpc_call **server_calls = malloc(sizeof(grpc_call *) * NUM_CALLS);
+  grpc_metadata_array *initial_metadata_recv =
+      malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
+  grpc_metadata_array *trailing_metadata_recv =
+      malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
+  grpc_metadata_array *request_metadata_recv =
+      malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
+  grpc_call_details *call_details =
+      malloc(sizeof(grpc_call_details) * NUM_CALLS);
+  grpc_status_code *status = malloc(sizeof(grpc_status_code) * NUM_CALLS);
+  char **details = malloc(sizeof(char *) * NUM_CALLS);
+  size_t *details_capacity = malloc(sizeof(size_t) * NUM_CALLS);
+  grpc_byte_buffer **request_payload_recv =
+      malloc(sizeof(grpc_byte_buffer *) * NUM_CALLS);
+  int *was_cancelled = malloc(sizeof(int) * NUM_CALLS);
   grpc_call_error error;
   int pending_client_calls = 0;
   int pending_server_start_calls = 0;
@@ -357,6 +362,18 @@ void resource_quota_server(grpc_end2end_test_config config) {
   grpc_slice_unref(request_payload_slice);
   grpc_resource_quota_unref(resource_quota);
 
+  free(client_calls);
+  free(server_calls);
+  free(initial_metadata_recv);
+  free(trailing_metadata_recv);
+  free(request_metadata_recv);
+  free(call_details);
+  free(status);
+  free(details);
+  free(details_capacity);
+  free(request_payload_recv);
+  free(was_cancelled);
+
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/server_finishes_request.c b/test/core/end2end/tests/server_finishes_request.c
index c23b7581f4..3bb25fd924 100644
--- a/test/core/end2end/tests/server_finishes_request.c
+++ b/test/core/end2end/tests/server_finishes_request.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -97,7 +97,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -114,9 +115,10 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -183,7 +185,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
@@ -202,7 +205,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f;
 
   f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
-  simple_request_body(f);
+  simple_request_body(config, f);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/shutdown_finishes_calls.c b/test/core/end2end/tests/shutdown_finishes_calls.c
index a21a63ad78..b80a2e35f2 100644
--- a/test/core/end2end/tests/shutdown_finishes_calls.c
+++ b/test/core/end2end/tests/shutdown_finishes_calls.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -104,8 +104,10 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -171,7 +173,8 @@ static void test_early_server_shutdown_finishes_inflight_calls(
 
   GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
diff --git a/test/core/end2end/tests/shutdown_finishes_tags.c b/test/core/end2end/tests/shutdown_finishes_tags.c
index aca7c55b9f..1d110a74ea 100644
--- a/test/core/end2end/tests/shutdown_finishes_tags.c
+++ b/test/core/end2end/tests/shutdown_finishes_tags.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
diff --git a/test/core/end2end/tests/simple_cacheable_request.c b/test/core/end2end/tests/simple_cacheable_request.c
index 4284175214..2c229b08fe 100644
--- a/test/core/end2end/tests/simple_cacheable_request.c
+++ b/test/core/end2end/tests/simple_cacheable_request.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -135,8 +135,10 @@ static void test_cacheable_request_response_with_metadata_and_payload(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -237,7 +239,8 @@ static void test_cacheable_request_response_with_metadata_and_payload(
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   if (config.feature_mask & FEATURE_MASK_SUPPORTS_REQUEST_PROXYING) {
     // Our simple proxy does not support cacheable requests
   } else {
diff --git a/test/core/end2end/tests/simple_delayed_request.c b/test/core/end2end/tests/simple_delayed_request.c
index 9d7d3a658e..ec40c8f22d 100644
--- a/test/core/end2end/tests/simple_delayed_request.c
+++ b/test/core/end2end/tests/simple_delayed_request.c
@@ -104,10 +104,12 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  config.init_client(f, client_args, NULL);
+  config.init_client(f, client_args);
 
-  c = grpc_channel_create_call(f->client, NULL, GRPC_PROPAGATE_DEFAULTS, f->cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f->client, NULL, GRPC_PROPAGATE_DEFAULTS, f->cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -180,7 +182,8 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
diff --git a/test/core/end2end/tests/simple_metadata.c b/test/core/end2end/tests/simple_metadata.c
index e11981f92b..5490cc2b75 100644
--- a/test/core/end2end/tests/simple_metadata.c
+++ b/test/core/end2end/tests/simple_metadata.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -132,8 +132,10 @@ static void test_request_response_with_metadata_and_payload(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -234,7 +236,8 @@ static void test_request_response_with_metadata_and_payload(
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 0);
   GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, "hello world"));
   GPR_ASSERT(byte_buffer_eq_string(response_payload_recv, "hello you"));
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index 65a3710c14..2dea5d6af2 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -97,7 +97,8 @@ static void end_test(grpc_end2end_test_fixture *f) {
   grpc_completion_queue_destroy(f->cq);
 }
 
-static void simple_request_body(grpc_end2end_test_fixture f) {
+static void simple_request_body(grpc_end2end_test_config config,
+                                grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -115,9 +116,10 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   int was_cancelled = 2;
   char *peer;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr:1234", deadline,
-                               NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   peer = grpc_call_get_peer(c);
@@ -202,7 +204,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(0 == call_details.flags);
   GPR_ASSERT(was_cancelled == 1);
 
@@ -222,7 +225,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f;
 
   f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
-  simple_request_body(f);
+  simple_request_body(config, f);
   end_test(&f);
   config.tear_down_data(&f);
 }
@@ -232,7 +235,7 @@ static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f =
       begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
   for (i = 0; i < 10; i++) {
-    simple_request_body(f);
+    simple_request_body(config, f);
     gpr_log(GPR_INFO, "Passed simple request %d", i);
   }
   end_test(&f);
diff --git a/test/core/end2end/tests/streaming_error_response.c b/test/core/end2end/tests/streaming_error_response.c
index efd41c508c..583bc9268f 100644
--- a/test/core/end2end/tests/streaming_error_response.c
+++ b/test/core/end2end/tests/streaming_error_response.c
@@ -55,7 +55,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
           request_status_early ? "true" : "false");
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -125,8 +125,10 @@ static void test(grpc_end2end_test_config config, bool request_status_early) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -245,7 +247,8 @@ static void test(grpc_end2end_test_config config, bool request_status_early) {
   GPR_ASSERT(status == GRPC_STATUS_FAILED_PRECONDITION);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
diff --git a/test/core/end2end/tests/trailing_metadata.c b/test/core/end2end/tests/trailing_metadata.c
index f88d5edeae..9fd4fbc052 100644
--- a/test/core/end2end/tests/trailing_metadata.c
+++ b/test/core/end2end/tests/trailing_metadata.c
@@ -53,7 +53,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
   gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
-  config.init_client(&f, client_args, NULL);
+  config.init_client(&f, client_args);
   return f;
 }
 
@@ -135,8 +135,10 @@ static void test_request_response_with_metadata_and_payload(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
-                               "/foo", "foo.test.google.fr", deadline, NULL);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/foo",
+      get_host_override_string("foo.test.google.fr:1234", config), deadline,
+      NULL);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -238,7 +240,8 @@ static void test_request_response_with_metadata_and_payload(
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
-  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
   GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, "hello world"));
   GPR_ASSERT(byte_buffer_eq_string(response_payload_recv, "hello you"));
   GPR_ASSERT(contains_metadata(&request_metadata_recv, "key1", "val1"));
diff --git a/test/core/iomgr/endpoint_tests.c b/test/core/iomgr/endpoint_tests.c
index 09a1e611f4..14991c9ad9 100644
--- a/test/core/iomgr/endpoint_tests.c
+++ b/test/core/iomgr/endpoint_tests.c
@@ -41,6 +41,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/test_config.h"
 
 /*
@@ -249,8 +251,8 @@ static void read_and_write_test(grpc_endpoint_test_config config,
   grpc_exec_ctx_flush(&exec_ctx);
 
   end_test(config);
-  grpc_slice_buffer_destroy_internal(exec_ctx, &state.outgoing);
-  grpc_slice_buffer_destroy_internal(exec_ctx, &state.incoming);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &state.outgoing);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &state.incoming);
   grpc_endpoint_destroy(&exec_ctx, state.read_ep);
   grpc_endpoint_destroy(&exec_ctx, state.write_ep);
   grpc_exec_ctx_finish(&exec_ctx);
@@ -304,7 +306,7 @@ static void multiple_shutdown_test(grpc_endpoint_test_config config) {
   grpc_endpoint_shutdown(&exec_ctx, f.client_ep);
   wait_for_fail_count(&exec_ctx, &fail_count, 3);
 
-  grpc_slice_buffer_destroy_internal(exec_ctx, &slice_buffer);
+  grpc_slice_buffer_destroy_internal(&exec_ctx, &slice_buffer);
 
   grpc_endpoint_destroy(&exec_ctx, f.client_ep);
   grpc_endpoint_destroy(&exec_ctx, f.server_ep);
diff --git a/test/core/iomgr/resource_quota_test.c b/test/core/iomgr/resource_quota_test.c
index 8ba8af26a8..43fb838eb4 100644
--- a/test/core/iomgr/resource_quota_test.c
+++ b/test/core/iomgr/resource_quota_test.c
@@ -36,6 +36,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/test_config.h"
 
 static void inc_int_cb(grpc_exec_ctx *exec_ctx, void *a, grpc_error *error) {
@@ -81,11 +82,7 @@ grpc_closure *make_unused_reclaimer(grpc_closure *then) {
 
 static void destroy_user(grpc_resource_user *usr) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  bool done = false;
-  grpc_resource_user_shutdown(&exec_ctx, usr, set_bool(&done));
-  grpc_exec_ctx_flush(&exec_ctx);
-  GPR_ASSERT(done);
-  grpc_resource_user_destroy(&exec_ctx, usr);
+  grpc_resource_user_unref(&exec_ctx, usr);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
@@ -106,10 +103,9 @@ static void test_resource_user_no_op(void) {
   gpr_log(GPR_INFO, "** test_resource_user_no_op **");
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_resource_user_no_op");
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
 }
 
 static void test_instant_alloc_then_free(void) {
@@ -117,20 +113,19 @@ static void test_instant_alloc_then_free(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_instant_alloc_then_free");
   grpc_resource_quota_resize(q, 1024 * 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, NULL);
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, NULL);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
 }
 
 static void test_instant_alloc_free_pair(void) {
@@ -138,16 +133,15 @@ static void test_instant_alloc_free_pair(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_instant_alloc_free_pair");
   grpc_resource_quota_resize(q, 1024 * 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, NULL);
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, NULL);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
 }
 
 static void test_simple_async_alloc(void) {
@@ -155,22 +149,21 @@ static void test_simple_async_alloc(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_simple_async_alloc");
   grpc_resource_quota_resize(q, 1024 * 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
 }
 
 static void test_async_alloc_blocked_by_size(void) {
@@ -178,12 +171,11 @@ static void test_async_alloc_blocked_by_size(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_async_alloc_blocked_by_size");
   grpc_resource_quota_resize(q, 1);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   bool done = false;
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(!done);
   }
@@ -191,87 +183,83 @@ static void test_async_alloc_blocked_by_size(void) {
   GPR_ASSERT(done);
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
 }
 
 static void test_scavenge(void) {
   gpr_log(GPR_INFO, "** test_scavenge **");
   grpc_resource_quota *q = grpc_resource_quota_create("test_scavenge");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr1;
-  grpc_resource_user usr2;
-  grpc_resource_user_init(&usr1, q, "usr1");
-  grpc_resource_user_init(&usr2, q, "usr2");
+  grpc_resource_user *usr1 = grpc_resource_user_create(q, "usr1");
+  grpc_resource_user *usr2 = grpc_resource_user_create(q, "usr2");
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr1, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr1, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr1, 1024);
+    grpc_resource_user_free(&exec_ctx, usr1, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr2, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr2, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr2, 1024);
+    grpc_resource_user_free(&exec_ctx, usr2, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr1);
-  destroy_user(&usr2);
+  destroy_user(usr1);
+  destroy_user(usr2);
 }
 
 static void test_scavenge_blocked(void) {
   gpr_log(GPR_INFO, "** test_scavenge_blocked **");
   grpc_resource_quota *q = grpc_resource_quota_create("test_scavenge_blocked");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr1;
-  grpc_resource_user usr2;
-  grpc_resource_user_init(&usr1, q, "usr1");
-  grpc_resource_user_init(&usr2, q, "usr2");
+  grpc_resource_user *usr1 = grpc_resource_user_create(q, "usr1");
+  grpc_resource_user *usr2 = grpc_resource_user_create(q, "usr2");
   bool done;
   {
     done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr1, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr1, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
   {
     done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr2, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr2, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(!done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr1, 1024);
+    grpc_resource_user_free(&exec_ctx, usr1, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr2, 1024);
+    grpc_resource_user_free(&exec_ctx, usr2, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr1);
-  destroy_user(&usr2);
+  destroy_user(usr1);
+  destroy_user(usr2);
 }
 
 static void test_blocked_until_scheduled_reclaim(void) {
@@ -279,12 +267,11 @@ static void test_blocked_until_scheduled_reclaim(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_blocked_until_scheduled_reclaim");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
@@ -292,25 +279,25 @@ static void test_blocked_until_scheduled_reclaim(void) {
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, false,
-        make_reclaimer(&usr, 1024, set_bool(&reclaim_done)));
+        &exec_ctx, usr, false,
+        make_reclaimer(usr, 1024, set_bool(&reclaim_done)));
     grpc_exec_ctx_finish(&exec_ctx);
   }
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(reclaim_done);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
 }
 
 static void test_blocked_until_scheduled_reclaim_and_scavenge(void) {
@@ -318,14 +305,12 @@ static void test_blocked_until_scheduled_reclaim_and_scavenge(void) {
   grpc_resource_quota *q = grpc_resource_quota_create(
       "test_blocked_until_scheduled_reclaim_and_scavenge");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr1;
-  grpc_resource_user usr2;
-  grpc_resource_user_init(&usr1, q, "usr1");
-  grpc_resource_user_init(&usr2, q, "usr2");
+  grpc_resource_user *usr1 = grpc_resource_user_create(q, "usr1");
+  grpc_resource_user *usr2 = grpc_resource_user_create(q, "usr2");
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr1, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr1, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
@@ -333,26 +318,26 @@ static void test_blocked_until_scheduled_reclaim_and_scavenge(void) {
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr1, false,
-        make_reclaimer(&usr1, 1024, set_bool(&reclaim_done)));
+        &exec_ctx, usr1, false,
+        make_reclaimer(usr1, 1024, set_bool(&reclaim_done)));
     grpc_exec_ctx_finish(&exec_ctx);
   }
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr2, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr2, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(reclaim_done);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr2, 1024);
+    grpc_resource_user_free(&exec_ctx, usr2, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr1);
-  destroy_user(&usr2);
+  destroy_user(usr1);
+  destroy_user(usr2);
 }
 
 static void test_blocked_until_scheduled_destructive_reclaim(void) {
@@ -360,12 +345,11 @@ static void test_blocked_until_scheduled_destructive_reclaim(void) {
   grpc_resource_quota *q = grpc_resource_quota_create(
       "test_blocked_until_scheduled_destructive_reclaim");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
@@ -373,25 +357,25 @@ static void test_blocked_until_scheduled_destructive_reclaim(void) {
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, true,
-        make_reclaimer(&usr, 1024, set_bool(&reclaim_done)));
+        &exec_ctx, usr, true,
+        make_reclaimer(usr, 1024, set_bool(&reclaim_done)));
     grpc_exec_ctx_finish(&exec_ctx);
   }
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(reclaim_done);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
 }
 
 static void test_unused_reclaim_is_cancelled(void) {
@@ -399,23 +383,22 @@ static void test_unused_reclaim_is_cancelled(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_unused_reclaim_is_cancelled");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   bool benign_done = false;
   bool destructive_done = false;
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, false, make_unused_reclaimer(set_bool(&benign_done)));
+        &exec_ctx, usr, false, make_unused_reclaimer(set_bool(&benign_done)));
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, true,
+        &exec_ctx, usr, true,
         make_unused_reclaimer(set_bool(&destructive_done)));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(!benign_done);
     GPR_ASSERT(!destructive_done);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
   GPR_ASSERT(benign_done);
   GPR_ASSERT(destructive_done);
 }
@@ -425,24 +408,23 @@ static void test_benign_reclaim_is_preferred(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_benign_reclaim_is_preferred");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   bool benign_done = false;
   bool destructive_done = false;
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, false,
-        make_reclaimer(&usr, 1024, set_bool(&benign_done)));
+        &exec_ctx, usr, false,
+        make_reclaimer(usr, 1024, set_bool(&benign_done)));
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, true,
+        &exec_ctx, usr, true,
         make_unused_reclaimer(set_bool(&destructive_done)));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(!benign_done);
@@ -451,7 +433,7 @@ static void test_benign_reclaim_is_preferred(void) {
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(benign_done);
     GPR_ASSERT(!destructive_done);
@@ -459,11 +441,11 @@ static void test_benign_reclaim_is_preferred(void) {
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
   GPR_ASSERT(benign_done);
   GPR_ASSERT(destructive_done);
 }
@@ -473,25 +455,24 @@ static void test_multiple_reclaims_can_be_triggered(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_multiple_reclaims_can_be_triggered");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   bool benign_done = false;
   bool destructive_done = false;
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, false,
-        make_reclaimer(&usr, 512, set_bool(&benign_done)));
+        &exec_ctx, usr, false,
+        make_reclaimer(usr, 512, set_bool(&benign_done)));
     grpc_resource_user_post_reclaimer(
-        &exec_ctx, &usr, true,
-        make_reclaimer(&usr, 512, set_bool(&destructive_done)));
+        &exec_ctx, usr, true,
+        make_reclaimer(usr, 512, set_bool(&destructive_done)));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(!benign_done);
     GPR_ASSERT(!destructive_done);
@@ -499,7 +480,7 @@ static void test_multiple_reclaims_can_be_triggered(void) {
   {
     bool done = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&done));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&done));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(benign_done);
     GPR_ASSERT(destructive_done);
@@ -507,11 +488,11 @@ static void test_multiple_reclaims_can_be_triggered(void) {
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   grpc_resource_quota_unref(q);
-  destroy_user(&usr);
+  destroy_user(usr);
   GPR_ASSERT(benign_done);
   GPR_ASSERT(destructive_done);
 }
@@ -522,30 +503,21 @@ static void test_resource_user_stays_allocated_until_memory_released(void) {
   grpc_resource_quota *q = grpc_resource_quota_create(
       "test_resource_user_stays_allocated_until_memory_released");
   grpc_resource_quota_resize(q, 1024 * 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
-  bool done = false;
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, NULL);
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, NULL);
     grpc_exec_ctx_finish(&exec_ctx);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
     grpc_resource_quota_unref(q);
-    grpc_resource_user_shutdown(&exec_ctx, &usr, set_bool(&done));
+    grpc_resource_user_unref(&exec_ctx, usr);
     grpc_exec_ctx_finish(&exec_ctx);
-    GPR_ASSERT(!done);
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
-    grpc_exec_ctx_finish(&exec_ctx);
-    GPR_ASSERT(done);
-  }
-  {
-    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_destroy(&exec_ctx, &usr);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
 }
@@ -562,14 +534,12 @@ test_resource_user_stays_allocated_and_reclaimers_unrun_until_memory_released(
       "released");
   grpc_resource_quota_resize(q, 1024);
   for (int i = 0; i < 10; i++) {
-    grpc_resource_user usr;
-    grpc_resource_user_init(&usr, q, "usr");
-    bool done = false;
+    grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
     bool reclaimer_cancelled = false;
     {
       grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
       grpc_resource_user_post_reclaimer(
-          &exec_ctx, &usr, false,
+          &exec_ctx, usr, false,
           make_unused_reclaimer(set_bool(&reclaimer_cancelled)));
       grpc_exec_ctx_finish(&exec_ctx);
       GPR_ASSERT(!reclaimer_cancelled);
@@ -577,30 +547,23 @@ test_resource_user_stays_allocated_and_reclaimers_unrun_until_memory_released(
     {
       bool allocated = false;
       grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-      grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&allocated));
+      grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&allocated));
       grpc_exec_ctx_finish(&exec_ctx);
       GPR_ASSERT(allocated);
       GPR_ASSERT(!reclaimer_cancelled);
     }
     {
       grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-      grpc_resource_user_shutdown(&exec_ctx, &usr, set_bool(&done));
+      grpc_resource_user_unref(&exec_ctx, usr);
       grpc_exec_ctx_finish(&exec_ctx);
-      GPR_ASSERT(!done);
       GPR_ASSERT(!reclaimer_cancelled);
     }
     {
       grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-      grpc_resource_user_free(&exec_ctx, &usr, 1024);
+      grpc_resource_user_free(&exec_ctx, usr, 1024);
       grpc_exec_ctx_finish(&exec_ctx);
-      GPR_ASSERT(done);
       GPR_ASSERT(reclaimer_cancelled);
     }
-    {
-      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-      grpc_resource_user_destroy(&exec_ctx, &usr);
-      grpc_exec_ctx_finish(&exec_ctx);
-    }
   }
   grpc_resource_quota_unref(q);
 }
@@ -610,12 +573,11 @@ static void test_reclaimers_can_be_posted_repeatedly(void) {
   grpc_resource_quota *q =
       grpc_resource_quota_create("test_reclaimers_can_be_posted_repeatedly");
   grpc_resource_quota_resize(q, 1024);
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
   {
     bool allocated = false;
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&allocated));
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&allocated));
     grpc_exec_ctx_finish(&exec_ctx);
     GPR_ASSERT(allocated);
   }
@@ -624,15 +586,15 @@ static void test_reclaimers_can_be_posted_repeatedly(void) {
     {
       grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
       grpc_resource_user_post_reclaimer(
-          &exec_ctx, &usr, false,
-          make_reclaimer(&usr, 1024, set_bool(&reclaimer_done)));
+          &exec_ctx, usr, false,
+          make_reclaimer(usr, 1024, set_bool(&reclaimer_done)));
       grpc_exec_ctx_finish(&exec_ctx);
       GPR_ASSERT(!reclaimer_done);
     }
     {
       bool allocated = false;
       grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-      grpc_resource_user_alloc(&exec_ctx, &usr, 1024, set_bool(&allocated));
+      grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_bool(&allocated));
       grpc_exec_ctx_finish(&exec_ctx);
       GPR_ASSERT(allocated);
       GPR_ASSERT(reclaimer_done);
@@ -640,10 +602,10 @@ static void test_reclaimers_can_be_posted_repeatedly(void) {
   }
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_free(&exec_ctx, &usr, 1024);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
     grpc_exec_ctx_finish(&exec_ctx);
   }
-  destroy_user(&usr);
+  destroy_user(usr);
   grpc_resource_quota_unref(q);
 }
 
@@ -653,13 +615,11 @@ static void test_one_slice(void) {
   grpc_resource_quota *q = grpc_resource_quota_create("test_one_slice");
   grpc_resource_quota_resize(q, 1024);
 
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
 
   grpc_resource_user_slice_allocator alloc;
   int num_allocs = 0;
-  grpc_resource_user_slice_allocator_init(&alloc, &usr, inc_int_cb,
-                                          &num_allocs);
+  grpc_resource_user_slice_allocator_init(&alloc, usr, inc_int_cb, &num_allocs);
 
   grpc_slice_buffer buffer;
   grpc_slice_buffer_init(&buffer);
@@ -672,8 +632,12 @@ static void test_one_slice(void) {
     GPR_ASSERT(num_allocs == start_allocs + 1);
   }
 
-  grpc_slice_buffer_destroy_internal(exec_ctx, &buffer);
-  destroy_user(&usr);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  destroy_user(usr);
   grpc_resource_quota_unref(q);
 }
 
@@ -684,13 +648,11 @@ static void test_one_slice_deleted_late(void) {
       grpc_resource_quota_create("test_one_slice_deleted_late");
   grpc_resource_quota_resize(q, 1024);
 
-  grpc_resource_user usr;
-  grpc_resource_user_init(&usr, q, "usr");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
 
   grpc_resource_user_slice_allocator alloc;
   int num_allocs = 0;
-  grpc_resource_user_slice_allocator_init(&alloc, &usr, inc_int_cb,
-                                          &num_allocs);
+  grpc_resource_user_slice_allocator_init(&alloc, usr, inc_int_cb, &num_allocs);
 
   grpc_slice_buffer buffer;
   grpc_slice_buffer_init(&buffer);
@@ -703,20 +665,16 @@ static void test_one_slice_deleted_late(void) {
     GPR_ASSERT(num_allocs == start_allocs + 1);
   }
 
-  bool done = false;
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_shutdown(&exec_ctx, &usr, set_bool(&done));
+    grpc_resource_user_unref(&exec_ctx, usr);
     grpc_exec_ctx_finish(&exec_ctx);
-    GPR_ASSERT(!done);
   }
 
   grpc_resource_quota_unref(q);
-  grpc_slice_buffer_destroy_internal(exec_ctx, &buffer);
-  GPR_ASSERT(done);
   {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_resource_user_destroy(&exec_ctx, &usr);
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
     grpc_exec_ctx_finish(&exec_ctx);
   }
 }
diff --git a/test/core/nanopb/corpus_response/1e2dd3a96d4c5142da19b2dd64014d9358504536 b/test/core/nanopb/corpus_response/1e2dd3a96d4c5142da19b2dd64014d9358504536
new file mode 100644
index 0000000000..b3bfc5cf21
--- /dev/null
+++ b/test/core/nanopb/corpus_response/1e2dd3a96d4c5142da19b2dd64014d9358504536
diff --git a/test/core/nanopb/corpus_response/2277a90ab01e3f27a4a8caf34ecd9997f3ffbf19 b/test/core/nanopb/corpus_response/2277a90ab01e3f27a4a8caf34ecd9997f3ffbf19
new file mode 100644
index 0000000000..4efad06ca2
--- /dev/null
+++ b/test/core/nanopb/corpus_response/2277a90ab01e3f27a4a8caf34ecd9997f3ffbf19
diff --git a/test/core/nanopb/corpus_response/30084b06df1cfb2bf2e1cfa8f8024c5af47a4d80 b/test/core/nanopb/corpus_response/30084b06df1cfb2bf2e1cfa8f8024c5af47a4d80
new file mode 100644
index 0000000000..e61ffbce2e
--- /dev/null
+++ b/test/core/nanopb/corpus_response/30084b06df1cfb2bf2e1cfa8f8024c5af47a4d80
diff --git a/test/core/nanopb/corpus_response/32d5dad0f831572fbbd32ea3de5df43e27568f34 b/test/core/nanopb/corpus_response/32d5dad0f831572fbbd32ea3de5df43e27568f34
new file mode 100644
index 0000000000..f75fef1797
--- /dev/null
+++ b/test/core/nanopb/corpus_response/32d5dad0f831572fbbd32ea3de5df43e27568f34
diff --git a/test/core/nanopb/corpus_response/4bd815b34ddfbbc45c780d1e7a97341796ee8471 b/test/core/nanopb/corpus_response/4bd815b34ddfbbc45c780d1e7a97341796ee8471
new file mode 100644
index 0000000000..b00a1d09b9
--- /dev/null
+++ b/test/core/nanopb/corpus_response/4bd815b34ddfbbc45c780d1e7a97341796ee8471
diff --git a/test/core/nanopb/corpus_response/595b8d51971c1d15146909567e539a1bb39b1af5 b/test/core/nanopb/corpus_response/595b8d51971c1d15146909567e539a1bb39b1af5
new file mode 100644
index 0000000000..1ea3c318f0
--- /dev/null
+++ b/test/core/nanopb/corpus_response/595b8d51971c1d15146909567e539a1bb39b1af5
diff --git a/test/core/nanopb/corpus_response/706b579bfc3db01ef7216d77ce231ea477c2fae2 b/test/core/nanopb/corpus_response/706b579bfc3db01ef7216d77ce231ea477c2fae2
new file mode 100644
index 0000000000..1c534a9fd2
--- /dev/null
+++ b/test/core/nanopb/corpus_response/706b579bfc3db01ef7216d77ce231ea477c2fae2
diff --git a/test/core/nanopb/corpus_response/71ec91b3a142105bc25dfa5b84ca0bd893e1db28 b/test/core/nanopb/corpus_response/71ec91b3a142105bc25dfa5b84ca0bd893e1db28
new file mode 100644
index 0000000000..eeeb13c139
--- /dev/null
+++ b/test/core/nanopb/corpus_response/71ec91b3a142105bc25dfa5b84ca0bd893e1db28
diff --git a/test/core/nanopb/corpus_response/74c9d6b5d7d31a7c48c842311857c319fafedd64 b/test/core/nanopb/corpus_response/74c9d6b5d7d31a7c48c842311857c319fafedd64
new file mode 100644
index 0000000000..0e2faa74f5
--- /dev/null
+++ b/test/core/nanopb/corpus_response/74c9d6b5d7d31a7c48c842311857c319fafedd64
diff --git a/test/core/nanopb/corpus_response/8707d3367be279eba1ddb5ffb990e40a3141c7d0 b/test/core/nanopb/corpus_response/8707d3367be279eba1ddb5ffb990e40a3141c7d0
new file mode 100644
index 0000000000..ca3395d508
--- /dev/null
+++ b/test/core/nanopb/corpus_response/8707d3367be279eba1ddb5ffb990e40a3141c7d0
diff --git a/test/core/nanopb/corpus_response/899ef237274b4a44b5478d7ec880680a0cb7dd88 b/test/core/nanopb/corpus_response/899ef237274b4a44b5478d7ec880680a0cb7dd88
new file mode 100644
index 0000000000..0f8a33a217
--- /dev/null
+++ b/test/core/nanopb/corpus_response/899ef237274b4a44b5478d7ec880680a0cb7dd88
diff --git a/test/core/nanopb/corpus_response/9849ff4673525f3c6ad567fc681b224a818da732 b/test/core/nanopb/corpus_response/9849ff4673525f3c6ad567fc681b224a818da732
new file mode 100644
index 0000000000..813b47ed0c
--- /dev/null
+++ b/test/core/nanopb/corpus_response/9849ff4673525f3c6ad567fc681b224a818da732
@@ -0,0 +1 @@
+
¼™'Ì)%±ƒ™Þ
“)½½“2ƒ;ÎÃ;Î)±%Ì):)
\ No newline at end of file
diff --git a/test/core/nanopb/corpus_response/a10e7effe8b9a50ef55b5e0244ea4dba5c48e9f3 b/test/core/nanopb/corpus_response/a10e7effe8b9a50ef55b5e0244ea4dba5c48e9f3
new file mode 100644
index 0000000000..39e01da119
--- /dev/null
+++ b/test/core/nanopb/corpus_response/a10e7effe8b9a50ef55b5e0244ea4dba5c48e9f3
diff --git a/test/core/nanopb/corpus_response/a20fa4d2633e9a401cb765470913483b848721d1 b/test/core/nanopb/corpus_response/a20fa4d2633e9a401cb765470913483b848721d1
new file mode 100644
index 0000000000..905d3ed87c
--- /dev/null
+++ b/test/core/nanopb/corpus_response/a20fa4d2633e9a401cb765470913483b848721d1
diff --git a/test/core/nanopb/corpus_response/b24237aa77b5f09208a7eb80b6178aeb2d53d24a b/test/core/nanopb/corpus_response/b24237aa77b5f09208a7eb80b6178aeb2d53d24a
new file mode 100644
index 0000000000..622e1f56ac
--- /dev/null
+++ b/test/core/nanopb/corpus_response/b24237aa77b5f09208a7eb80b6178aeb2d53d24a
diff --git a/test/core/nanopb/corpus_response/b8e1c06314e52491ba955b72e13161c74e9b1422 b/test/core/nanopb/corpus_response/b8e1c06314e52491ba955b72e13161c74e9b1422
new file mode 100644
index 0000000000..39063097b5
--- /dev/null
+++ b/test/core/nanopb/corpus_response/b8e1c06314e52491ba955b72e13161c74e9b1422
diff --git a/test/core/nanopb/corpus_response/c6fa750d7de79b2547531ed597ab7f1c4cd74193 b/test/core/nanopb/corpus_response/c6fa750d7de79b2547531ed597ab7f1c4cd74193
new file mode 100644
index 0000000000..79690ed993
--- /dev/null
+++ b/test/core/nanopb/corpus_response/c6fa750d7de79b2547531ed597ab7f1c4cd74193
diff --git a/test/core/nanopb/corpus_response/f70e0dfc4185374b764189b1a96f3b4b7581ce0c b/test/core/nanopb/corpus_response/f70e0dfc4185374b764189b1a96f3b4b7581ce0c
new file mode 100644
index 0000000000..c7d81507b2
--- /dev/null
+++ b/test/core/nanopb/corpus_response/f70e0dfc4185374b764189b1a96f3b4b7581ce0c
diff --git a/test/core/nanopb/corpus_response/fb60def26b39a737e29e850194a0c2047e378900 b/test/core/nanopb/corpus_response/fb60def26b39a737e29e850194a0c2047e378900
new file mode 100644
index 0000000000..1ef7bff54e
--- /dev/null
+++ b/test/core/nanopb/corpus_response/fb60def26b39a737e29e850194a0c2047e378900
@@ -0,0 +1 @@
+
	:)½:
\ No newline at end of file
diff --git a/test/core/nanopb/corpus_response/timeout-3ec5d82cc22b6f35ab7d281faf1cc5e66f0e3bfb b/test/core/nanopb/corpus_response/timeout-3ec5d82cc22b6f35ab7d281faf1cc5e66f0e3bfb
new file mode 100644
index 0000000000..a139906dbc
--- /dev/null
+++ b/test/core/nanopb/corpus_response/timeout-3ec5d82cc22b6f35ab7d281faf1cc5e66f0e3bfb
diff --git a/test/core/nanopb/corpus_response/timeout-6995dd153f712ad257ab5a365e5a4b84dc676ed3 b/test/core/nanopb/corpus_response/timeout-6995dd153f712ad257ab5a365e5a4b84dc676ed3
new file mode 100644
index 0000000000..a9ae5ff3e9
--- /dev/null
+++ b/test/core/nanopb/corpus_response/timeout-6995dd153f712ad257ab5a365e5a4b84dc676ed3
diff --git a/test/core/nanopb/corpus_response/timeout-e5609086439f47e81c775bf80a7213fb73eb028c b/test/core/nanopb/corpus_response/timeout-e5609086439f47e81c775bf80a7213fb73eb028c
new file mode 100644
index 0000000000..7593c0407f
--- /dev/null
+++ b/test/core/nanopb/corpus_response/timeout-e5609086439f47e81c775bf80a7213fb73eb028c
diff --git a/test/core/transport/pid_controller_test.c b/test/core/transport/pid_controller_test.c
new file mode 100644
index 0000000000..9614983b00
--- /dev/null
+++ b/test/core/transport/pid_controller_test.c
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/transport/pid_controller.h"
+
+#include <math.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/useful.h>
+#include "src/core/lib/support/string.h"
+#include "test/core/util/test_config.h"
+
+static void test_noop(void) {
+  gpr_log(GPR_INFO, "test_noop");
+  grpc_pid_controller pid;
+  grpc_pid_controller_init(&pid, 1, 1, 1);
+}
+
+static void test_simple_convergence(double gain_p, double gain_i, double gain_d,
+                                    double dt, double set_point, double start) {
+  gpr_log(GPR_INFO,
+          "test_simple_convergence(p=%lf, i=%lf, d=%lf); dt=%lf set_point=%lf "
+          "start=%lf",
+          gain_p, gain_i, gain_d, dt, set_point, start);
+  grpc_pid_controller pid;
+  grpc_pid_controller_init(&pid, 0.2, 0.1, 0.1);
+
+  double current = start;
+
+  for (int i = 0; i < 1000; i++) {
+    current += grpc_pid_controller_update(&pid, set_point - current, 1);
+  }
+
+  GPR_ASSERT(fabs(set_point - current) < 0.1);
+  GPR_ASSERT(fabs(pid.error_integral) < 0.1);
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  test_noop();
+  test_simple_convergence(0.2, 0, 0, 1, 100, 0);
+  test_simple_convergence(0.2, 0.1, 0, 1, 100, 0);
+  test_simple_convergence(0.2, 0.1, 0.1, 1, 100, 0);
+  return 0;
+}
diff --git a/test/core/util/mock_endpoint.c b/test/core/util/mock_endpoint.c
index 1d33566221..28ff0642cc 100644
--- a/test/core/util/mock_endpoint.c
+++ b/test/core/util/mock_endpoint.c
@@ -41,12 +41,11 @@
 typedef struct grpc_mock_endpoint {
   grpc_endpoint base;
   gpr_mu mu;
-  int refs;
   void (*on_write)(grpc_slice slice);
   grpc_slice_buffer read_buffer;
   grpc_slice_buffer *on_read_out;
   grpc_closure *on_read;
-  grpc_resource_user resource_user;
+  grpc_resource_user *resource_user;
 } grpc_mock_endpoint;
 
 static void me_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
@@ -78,24 +77,6 @@ static void me_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
 static void me_add_to_pollset_set(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
                                   grpc_pollset_set *pollset) {}
 
-static void unref(grpc_exec_ctx *exec_ctx, grpc_mock_endpoint *m) {
-  gpr_mu_lock(&m->mu);
-  if (0 == --m->refs) {
-    gpr_mu_unlock(&m->mu);
-    grpc_slice_buffer_destroy_internal(exec_ctx, &m->read_buffer);
-    grpc_resource_user_destroy(exec_ctx, &m->resource_user);
-    gpr_free(m);
-  } else {
-    gpr_mu_unlock(&m->mu);
-  }
-}
-
-static void me_finish_shutdown(grpc_exec_ctx *exec_ctx, void *me,
-                               grpc_error *error) {
-  grpc_mock_endpoint *m = me;
-  unref(exec_ctx, m);
-}
-
 static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
   grpc_mock_endpoint *m = (grpc_mock_endpoint *)ep;
   gpr_mu_lock(&m->mu);
@@ -104,14 +85,15 @@ static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
                         GRPC_ERROR_CREATE("Endpoint Shutdown"), NULL);
     m->on_read = NULL;
   }
-  grpc_resource_user_shutdown(exec_ctx, &m->resource_user,
-                              grpc_closure_create(me_finish_shutdown, m));
   gpr_mu_unlock(&m->mu);
+  grpc_resource_user_shutdown(exec_ctx, m->resource_user);
 }
 
 static void me_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
   grpc_mock_endpoint *m = (grpc_mock_endpoint *)ep;
-  unref(exec_ctx, m);
+  grpc_slice_buffer_destroy(&m->read_buffer);
+  grpc_resource_user_unref(exec_ctx, m->resource_user);
+  gpr_free(m);
 }
 
 static char *me_get_peer(grpc_endpoint *ep) {
@@ -120,7 +102,7 @@ static char *me_get_peer(grpc_endpoint *ep) {
 
 static grpc_resource_user *me_get_resource_user(grpc_endpoint *ep) {
   grpc_mock_endpoint *m = (grpc_mock_endpoint *)ep;
-  return &m->resource_user;
+  return m->resource_user;
 }
 
 static grpc_workqueue *me_get_workqueue(grpc_endpoint *ep) { return NULL; }
@@ -141,10 +123,9 @@ grpc_endpoint *grpc_mock_endpoint_create(void (*on_write)(grpc_slice slice),
                                          grpc_resource_quota *resource_quota) {
   grpc_mock_endpoint *m = gpr_malloc(sizeof(*m));
   m->base.vtable = &vtable;
-  m->refs = 2;
   char *name;
   gpr_asprintf(&name, "mock_endpoint_%" PRIxPTR, (intptr_t)m);
-  grpc_resource_user_init(&m->resource_user, resource_quota, name);
+  m->resource_user = grpc_resource_user_create(resource_quota, name);
   gpr_free(name);
   grpc_slice_buffer_init(&m->read_buffer);
   gpr_mu_init(&m->mu);
diff --git a/test/core/util/passthru_endpoint.c b/test/core/util/passthru_endpoint.c
index db10de87d9..62d5f1c3db 100644
--- a/test/core/util/passthru_endpoint.c
+++ b/test/core/util/passthru_endpoint.c
@@ -38,6 +38,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/slice/slice_internal.h"
+
 typedef struct passthru_endpoint passthru_endpoint;
 
 typedef struct {
@@ -46,7 +48,7 @@ typedef struct {
   grpc_slice_buffer read_buffer;
   grpc_slice_buffer *on_read_out;
   grpc_closure *on_read;
-  grpc_resource_user resource_user;
+  grpc_resource_user *resource_user;
 } half;
 
 struct passthru_endpoint {
@@ -123,10 +125,10 @@ static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
     m->on_read = NULL;
   }
   gpr_mu_unlock(&m->parent->mu);
+  grpc_resource_user_shutdown(exec_ctx, m->resource_user);
 }
 
-static void me_really_destroy(grpc_exec_ctx *exec_ctx, void *ep,
-                              grpc_error *error) {
+static void me_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
   passthru_endpoint *p = ((half *)ep)->parent;
   gpr_mu_lock(&p->mu);
   if (0 == --p->halves) {
@@ -134,18 +136,14 @@ static void me_really_destroy(grpc_exec_ctx *exec_ctx, void *ep,
     gpr_mu_destroy(&p->mu);
     grpc_slice_buffer_destroy_internal(exec_ctx, &p->client.read_buffer);
     grpc_slice_buffer_destroy_internal(exec_ctx, &p->server.read_buffer);
+    grpc_resource_user_unref(exec_ctx, p->client.resource_user);
+    grpc_resource_user_unref(exec_ctx, p->server.resource_user);
     gpr_free(p);
   } else {
     gpr_mu_unlock(&p->mu);
   }
 }
 
-static void me_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
-  half *m = (half *)ep;
-  grpc_resource_user_shutdown(exec_ctx, &m->resource_user,
-                              grpc_closure_create(me_really_destroy, m));
-}
-
 static char *me_get_peer(grpc_endpoint *ep) {
   return gpr_strdup("fake:mock_endpoint");
 }
@@ -154,7 +152,7 @@ static grpc_workqueue *me_get_workqueue(grpc_endpoint *ep) { return NULL; }
 
 static grpc_resource_user *me_get_resource_user(grpc_endpoint *ep) {
   half *m = (half *)ep;
-  return &m->resource_user;
+  return m->resource_user;
 }
 
 static const grpc_endpoint_vtable vtable = {
@@ -179,7 +177,7 @@ static void half_init(half *m, passthru_endpoint *parent,
   char *name;
   gpr_asprintf(&name, "passthru_endpoint_%s_%" PRIxPTR, half_name,
                (intptr_t)parent);
-  grpc_resource_user_init(&m->resource_user, resource_quota, name);
+  m->resource_user = grpc_resource_user_create(resource_quota, name);
   gpr_free(name);
 }
 
diff --git a/test/cpp/codegen/compiler_test_golden b/test/cpp/codegen/compiler_test_golden
index 5f0e824655..0b82f2a59f 100644
--- a/test/cpp/codegen/compiler_test_golden
+++ b/test/cpp/codegen/compiler_test_golden
@@ -67,7 +67,7 @@ namespace testing {
 // ServiceA detached comment 2
 //
 // ServiceA leading comment 1
-class ServiceA GRPC_FINAL {
+class ServiceA final {
  public:
   class StubInterface {
    public:
@@ -94,10 +94,10 @@ class ServiceA GRPC_FINAL {
     virtual ::grpc::ClientWriterInterface< ::grpc::testing::Request>* MethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response) = 0;
     virtual ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>* AsyncMethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag) = 0;
   };
-  class Stub GRPC_FINAL : public StubInterface {
+  class Stub final : public StubInterface {
    public:
     Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel);
-    ::grpc::Status MethodA1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::testing::Response* response) GRPC_OVERRIDE;
+    ::grpc::Status MethodA1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::testing::Response* response) override;
     std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>> AsyncMethodA1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
       return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>>(AsyncMethodA1Raw(context, request, cq));
     }
@@ -110,9 +110,9 @@ class ServiceA GRPC_FINAL {
 
    private:
     std::shared_ptr< ::grpc::ChannelInterface> channel_;
-    ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* AsyncMethodA1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) GRPC_OVERRIDE;
-    ::grpc::ClientWriter< ::grpc::testing::Request>* MethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response) GRPC_OVERRIDE;
-    ::grpc::ClientAsyncWriter< ::grpc::testing::Request>* AsyncMethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag) GRPC_OVERRIDE;
+    ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* AsyncMethodA1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientWriter< ::grpc::testing::Request>* MethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response) override;
+    ::grpc::ClientAsyncWriter< ::grpc::testing::Request>* AsyncMethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag) override;
     const ::grpc::RpcMethod rpcmethod_MethodA1_;
     const ::grpc::RpcMethod rpcmethod_MethodA2_;
   };
@@ -140,11 +140,11 @@ class ServiceA GRPC_FINAL {
     WithAsyncMethod_MethodA1() {
       ::grpc::Service::MarkMethodAsync(0);
     }
-    ~WithAsyncMethod_MethodA1() GRPC_OVERRIDE {
+    ~WithAsyncMethod_MethodA1() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable synchronous version of this method
-    ::grpc::Status MethodA1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodA1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
@@ -160,11 +160,11 @@ class ServiceA GRPC_FINAL {
     WithAsyncMethod_MethodA2() {
       ::grpc::Service::MarkMethodAsync(1);
     }
-    ~WithAsyncMethod_MethodA2() GRPC_OVERRIDE {
+    ~WithAsyncMethod_MethodA2() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable synchronous version of this method
-    ::grpc::Status MethodA2(::grpc::ServerContext* context, ::grpc::ServerReader< ::grpc::testing::Request>* reader, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodA2(::grpc::ServerContext* context, ::grpc::ServerReader< ::grpc::testing::Request>* reader, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
@@ -181,11 +181,11 @@ class ServiceA GRPC_FINAL {
     WithGenericMethod_MethodA1() {
       ::grpc::Service::MarkMethodGeneric(0);
     }
-    ~WithGenericMethod_MethodA1() GRPC_OVERRIDE {
+    ~WithGenericMethod_MethodA1() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable synchronous version of this method
-    ::grpc::Status MethodA1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodA1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
@@ -198,11 +198,11 @@ class ServiceA GRPC_FINAL {
     WithGenericMethod_MethodA2() {
       ::grpc::Service::MarkMethodGeneric(1);
     }
-    ~WithGenericMethod_MethodA2() GRPC_OVERRIDE {
+    ~WithGenericMethod_MethodA2() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable synchronous version of this method
-    ::grpc::Status MethodA2(::grpc::ServerContext* context, ::grpc::ServerReader< ::grpc::testing::Request>* reader, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodA2(::grpc::ServerContext* context, ::grpc::ServerReader< ::grpc::testing::Request>* reader, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
@@ -216,11 +216,11 @@ class ServiceA GRPC_FINAL {
       ::grpc::Service::MarkMethodStreamed(0,
         new ::grpc::StreamedUnaryHandler< ::grpc::testing::Request, ::grpc::testing::Response>(std::bind(&WithStreamedUnaryMethod_MethodA1<BaseClass>::StreamedMethodA1, this, std::placeholders::_1, std::placeholders::_2)));
     }
-    ~WithStreamedUnaryMethod_MethodA1() GRPC_OVERRIDE {
+    ~WithStreamedUnaryMethod_MethodA1() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable regular version of this method
-    ::grpc::Status MethodA1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodA1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
@@ -233,7 +233,7 @@ class ServiceA GRPC_FINAL {
 };
 
 // ServiceB leading comment 1
-class ServiceB GRPC_FINAL {
+class ServiceB final {
  public:
   class StubInterface {
    public:
@@ -247,17 +247,17 @@ class ServiceB GRPC_FINAL {
   private:
     virtual ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>* AsyncMethodB1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) = 0;
   };
-  class Stub GRPC_FINAL : public StubInterface {
+  class Stub final : public StubInterface {
    public:
     Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel);
-    ::grpc::Status MethodB1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::testing::Response* response) GRPC_OVERRIDE;
+    ::grpc::Status MethodB1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::testing::Response* response) override;
     std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>> AsyncMethodB1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
       return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>>(AsyncMethodB1Raw(context, request, cq));
     }
 
    private:
     std::shared_ptr< ::grpc::ChannelInterface> channel_;
-    ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* AsyncMethodB1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) GRPC_OVERRIDE;
+    ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* AsyncMethodB1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) override;
     const ::grpc::RpcMethod rpcmethod_MethodB1_;
   };
   static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
@@ -278,11 +278,11 @@ class ServiceB GRPC_FINAL {
     WithAsyncMethod_MethodB1() {
       ::grpc::Service::MarkMethodAsync(0);
     }
-    ~WithAsyncMethod_MethodB1() GRPC_OVERRIDE {
+    ~WithAsyncMethod_MethodB1() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable synchronous version of this method
-    ::grpc::Status MethodB1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodB1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
@@ -299,11 +299,11 @@ class ServiceB GRPC_FINAL {
     WithGenericMethod_MethodB1() {
       ::grpc::Service::MarkMethodGeneric(0);
     }
-    ~WithGenericMethod_MethodB1() GRPC_OVERRIDE {
+    ~WithGenericMethod_MethodB1() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable synchronous version of this method
-    ::grpc::Status MethodB1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodB1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
@@ -317,11 +317,11 @@ class ServiceB GRPC_FINAL {
       ::grpc::Service::MarkMethodStreamed(0,
         new ::grpc::StreamedUnaryHandler< ::grpc::testing::Request, ::grpc::testing::Response>(std::bind(&WithStreamedUnaryMethod_MethodB1<BaseClass>::StreamedMethodB1, this, std::placeholders::_1, std::placeholders::_2)));
     }
-    ~WithStreamedUnaryMethod_MethodB1() GRPC_OVERRIDE {
+    ~WithStreamedUnaryMethod_MethodB1() override {
       BaseClassMustBeDerivedFromService(this);
     }
     // disable regular version of this method
-    ::grpc::Status MethodB1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) GRPC_FINAL GRPC_OVERRIDE {
+    ::grpc::Status MethodB1(::grpc::ServerContext* context, const ::grpc::testing::Request* request, ::grpc::testing::Response* response) final override {
       abort();
       return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
     }
diff --git a/test/cpp/common/auth_property_iterator_test.cc b/test/cpp/common/auth_property_iterator_test.cc
index 66225ff335..16bebcab74 100644
--- a/test/cpp/common/auth_property_iterator_test.cc
+++ b/test/cpp/common/auth_property_iterator_test.cc
@@ -56,7 +56,7 @@ class TestAuthPropertyIterator : public AuthPropertyIterator {
 
 class AuthPropertyIteratorTest : public ::testing::Test {
  protected:
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     ctx_ = grpc_auth_context_create(NULL);
     grpc_auth_context_add_cstring_property(ctx_, "name", "chapi");
     grpc_auth_context_add_cstring_property(ctx_, "name", "chapo");
@@ -64,7 +64,7 @@ class AuthPropertyIteratorTest : public ::testing::Test {
     EXPECT_EQ(1,
               grpc_auth_context_set_peer_identity_property_name(ctx_, "name"));
   }
-  void TearDown() GRPC_OVERRIDE { grpc_auth_context_release(ctx_); }
+  void TearDown() override { grpc_auth_context_release(ctx_); }
   grpc_auth_context* ctx_;
 };
 
diff --git a/test/cpp/common/channel_arguments_test.cc b/test/cpp/common/channel_arguments_test.cc
index 1443eb2f68..342f6a5339 100644
--- a/test/cpp/common/channel_arguments_test.cc
+++ b/test/cpp/common/channel_arguments_test.cc
@@ -33,6 +33,7 @@
 
 #include <grpc++/support/channel_arguments.h>
 
+#include <grpc++/grpc++.h>
 #include <grpc/grpc.h>
 #include <gtest/gtest.h>
 
@@ -53,7 +54,7 @@ class ChannelArgumentsTest : public ::testing::Test {
 
   grpc::string GetDefaultUserAgentPrefix() {
     std::ostringstream user_agent_prefix;
-    user_agent_prefix << "grpc-c++/" << grpc_version_string();
+    user_agent_prefix << "grpc-c++/" << Version();
     return user_agent_prefix.str();
   }
 
diff --git a/test/cpp/common/channel_filter_test.cc b/test/cpp/common/channel_filter_test.cc
new file mode 100644
index 0000000000..600a953d82
--- /dev/null
+++ b/test/cpp/common/channel_filter_test.cc
@@ -0,0 +1,70 @@
+//
+// Copyright 2016, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+#include "src/cpp/common/channel_filter.h"
+
+#include <limits.h>
+
+#include <grpc/grpc.h>
+#include <gtest/gtest.h>
+
+namespace grpc {
+namespace testing {
+
+class MyChannelData : public ChannelData {
+ public:
+  MyChannelData(const grpc_channel_args& args, const char* peer)
+      : ChannelData(args, peer) {}
+};
+
+class MyCallData : public CallData {
+ public:
+  explicit MyCallData(const ChannelData& channel_data)
+      : CallData(channel_data) {}
+};
+
+// This test ensures that when we make changes to the filter API in
+// C-core, we don't accidentally break the C++ filter API.
+TEST(ChannelFilterTest, RegisterChannelFilter) {
+  grpc::RegisterChannelFilter<MyChannelData, MyCallData>(
+      "myfilter", GRPC_CLIENT_CHANNEL, INT_MAX, nullptr);
+}
+
+// TODO(roth): When we have time, add tests for all methods of the
+// filter API.
+
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/test/cpp/end2end/async_end2end_test.cc b/test/cpp/end2end/async_end2end_test.cc
index 823f0bd035..3845582d5d 100644
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@@ -211,10 +211,10 @@ bool plugin_has_sync_methods(std::unique_ptr<ServerBuilderPlugin>& plugin) {
 // that needs to be tested here.
 class ServerBuilderSyncPluginDisabler : public ::grpc::ServerBuilderOption {
  public:
-  void UpdateArguments(ChannelArguments* arg) GRPC_OVERRIDE {}
+  void UpdateArguments(ChannelArguments* arg) override {}
 
-  void UpdatePlugins(std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins)
-      GRPC_OVERRIDE {
+  void UpdatePlugins(
+      std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins) override {
     plugins->erase(std::remove_if(plugins->begin(), plugins->end(),
                                   plugin_has_sync_methods),
                    plugins->end());
@@ -246,7 +246,7 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
  protected:
   AsyncEnd2endTest() { GetParam().Log(); }
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     poll_overrider_.reset(new PollingOverrider(!GetParam().disable_blocking));
 
     port_ = grpc_pick_unused_port_or_die();
@@ -269,7 +269,7 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
     gpr_tls_set(&g_is_async_end2end_test, 1);
   }
 
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     server_->Shutdown();
     void* ignored_tag;
     bool ignored_ok;
diff --git a/test/cpp/end2end/client_crash_test_server.cc b/test/cpp/end2end/client_crash_test_server.cc
index 6e1457407c..0e0a105989 100644
--- a/test/cpp/end2end/client_crash_test_server.cc
+++ b/test/cpp/end2end/client_crash_test_server.cc
@@ -58,11 +58,10 @@ using namespace gflags;
 namespace grpc {
 namespace testing {
 
-class ServiceImpl GRPC_FINAL
-    : public ::grpc::testing::EchoTestService::Service {
-  Status BidiStream(ServerContext* context,
-                    ServerReaderWriter<EchoResponse, EchoRequest>* stream)
-      GRPC_OVERRIDE {
+class ServiceImpl final : public ::grpc::testing::EchoTestService::Service {
+  Status BidiStream(
+      ServerContext* context,
+      ServerReaderWriter<EchoResponse, EchoRequest>* stream) override {
     EchoRequest request;
     EchoResponse response;
     while (stream->Read(&request)) {
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 43b7d44255..4b8749884f 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -92,12 +92,12 @@ class TestMetadataCredentialsPlugin : public MetadataCredentialsPlugin {
         is_blocking_(is_blocking),
         is_successful_(is_successful) {}
 
-  bool IsBlocking() const GRPC_OVERRIDE { return is_blocking_; }
+  bool IsBlocking() const override { return is_blocking_; }
 
-  Status GetMetadata(grpc::string_ref service_url, grpc::string_ref method_name,
-                     const grpc::AuthContext& channel_auth_context,
-                     std::multimap<grpc::string, grpc::string>* metadata)
-      GRPC_OVERRIDE {
+  Status GetMetadata(
+      grpc::string_ref service_url, grpc::string_ref method_name,
+      const grpc::AuthContext& channel_auth_context,
+      std::multimap<grpc::string, grpc::string>* metadata) override {
     EXPECT_GT(service_url.length(), 0UL);
     EXPECT_GT(method_name.length(), 0UL);
     EXPECT_TRUE(channel_auth_context.IsPeerAuthenticated());
@@ -145,11 +145,11 @@ class TestAuthMetadataProcessor : public AuthMetadataProcessor {
   }
 
   // Interface implementation
-  bool IsBlocking() const GRPC_OVERRIDE { return is_blocking_; }
+  bool IsBlocking() const override { return is_blocking_; }
 
   Status Process(const InputMetadata& auth_metadata, AuthContext* context,
                  OutputMetadata* consumed_auth_metadata,
-                 OutputMetadata* response_metadata) GRPC_OVERRIDE {
+                 OutputMetadata* response_metadata) override {
     EXPECT_TRUE(consumed_auth_metadata != nullptr);
     EXPECT_TRUE(context != nullptr);
     EXPECT_TRUE(response_metadata != nullptr);
@@ -185,7 +185,7 @@ class Proxy : public ::grpc::testing::EchoTestService::Service {
       : stub_(grpc::testing::EchoTestService::NewStub(channel)) {}
 
   Status Echo(ServerContext* server_context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     std::unique_ptr<ClientContext> client_context =
         ClientContext::FromServerContext(*server_context);
     return stub_->Echo(client_context.get(), *request, response);
@@ -199,7 +199,7 @@ class TestServiceImplDupPkg
     : public ::grpc::testing::duplicate::EchoTestService::Service {
  public:
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     response->set_message("no package");
     return Status::OK;
   }
@@ -229,7 +229,7 @@ class End2endTest : public ::testing::TestWithParam<TestScenario> {
     GetParam().Log();
   }
 
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     if (is_server_started_) {
       server_->Shutdown();
       if (proxy_server_) proxy_server_->Shutdown();
@@ -1496,7 +1496,7 @@ class ResourceQuotaEnd2endTest : public End2endTest {
   ResourceQuotaEnd2endTest()
       : server_resource_quota_("server_resource_quota") {}
 
-  virtual void ConfigureServerBuilder(ServerBuilder* builder) GRPC_OVERRIDE {
+  virtual void ConfigureServerBuilder(ServerBuilder* builder) override {
     builder->SetResourceQuota(server_resource_quota_);
   }
 
diff --git a/test/cpp/end2end/filter_end2end_test.cc b/test/cpp/end2end/filter_end2end_test.cc
index 853720fd0d..ab6ed46de5 100644
--- a/test/cpp/end2end/filter_end2end_test.cc
+++ b/test/cpp/end2end/filter_end2end_test.cc
@@ -78,35 +78,35 @@ namespace {
 
 int global_num_connections = 0;
 int global_num_calls = 0;
-mutex global_mu;
+std::mutex global_mu;
 
 void IncrementConnectionCounter() {
-  unique_lock<mutex> lock(global_mu);
+  std::unique_lock<std::mutex> lock(global_mu);
   ++global_num_connections;
 }
 
 void ResetConnectionCounter() {
-  unique_lock<mutex> lock(global_mu);
+  std::unique_lock<std::mutex> lock(global_mu);
   global_num_connections = 0;
 }
 
 int GetConnectionCounterValue() {
-  unique_lock<mutex> lock(global_mu);
+  std::unique_lock<std::mutex> lock(global_mu);
   return global_num_connections;
 }
 
 void IncrementCallCounter() {
-  unique_lock<mutex> lock(global_mu);
+  std::unique_lock<std::mutex> lock(global_mu);
   ++global_num_calls;
 }
 
 void ResetCallCounter() {
-  unique_lock<mutex> lock(global_mu);
+  std::unique_lock<std::mutex> lock(global_mu);
   global_num_calls = 0;
 }
 
 int GetCallCounterValue() {
-  unique_lock<mutex> lock(global_mu);
+  std::unique_lock<std::mutex> lock(global_mu);
   return global_num_calls;
 }
 
@@ -126,7 +126,7 @@ class CallDataImpl : public CallData {
       : CallData(channel_data) {}
 
   void StartTransportStreamOp(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
-                              TransportStreamOp* op) GRPC_OVERRIDE {
+                              TransportStreamOp* op) override {
     // Incrementing the counter could be done from the ctor, but we want
     // to test that the individual methods are actually called correctly.
     if (op->recv_initial_metadata() != nullptr) IncrementCallCounter();
@@ -138,7 +138,7 @@ class FilterEnd2endTest : public ::testing::Test {
  protected:
   FilterEnd2endTest() : server_host_("localhost") {}
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     int port = grpc_pick_unused_port_or_die();
     server_address_ << server_host_ << ":" << port;
     // Setup server
@@ -150,7 +150,7 @@ class FilterEnd2endTest : public ::testing::Test {
     server_ = builder.BuildAndStart();
   }
 
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     server_->Shutdown();
     void* ignored_tag;
     bool ignored_ok;
diff --git a/test/cpp/end2end/generic_end2end_test.cc b/test/cpp/end2end/generic_end2end_test.cc
index 57efa5fa17..25c221bb2b 100644
--- a/test/cpp/end2end/generic_end2end_test.cc
+++ b/test/cpp/end2end/generic_end2end_test.cc
@@ -75,7 +75,7 @@ class GenericEnd2endTest : public ::testing::Test {
  protected:
   GenericEnd2endTest() : server_host_("localhost") {}
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     int port = grpc_pick_unused_port_or_die();
     server_address_ << server_host_ << ":" << port;
     // Setup server
@@ -91,7 +91,7 @@ class GenericEnd2endTest : public ::testing::Test {
     server_ = builder.BuildAndStart();
   }
 
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     server_->Shutdown();
     void* ignored_tag;
     bool ignored_ok;
diff --git a/test/cpp/end2end/hybrid_end2end_test.cc b/test/cpp/end2end/hybrid_end2end_test.cc
index 76a5732f33..a4ba76fed1 100644
--- a/test/cpp/end2end/hybrid_end2end_test.cc
+++ b/test/cpp/end2end/hybrid_end2end_test.cc
@@ -188,7 +188,7 @@ class TestServiceImplDupPkg
     : public ::grpc::testing::duplicate::EchoTestService::Service {
  public:
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     response->set_message(request->message() + "_dup");
     return Status::OK;
   }
@@ -230,7 +230,7 @@ class HybridEnd2endTest : public ::testing::Test {
     server_ = builder.BuildAndStart();
   }
 
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     if (server_) {
       server_->Shutdown();
     }
@@ -449,9 +449,9 @@ class StreamedUnaryDupPkg
     : public duplicate::EchoTestService::WithStreamedUnaryMethod_Echo<
           TestServiceImplDupPkg> {
  public:
-  Status StreamedEcho(ServerContext* context,
-                      ServerUnaryStreamer<EchoRequest, EchoResponse>* stream)
-      GRPC_OVERRIDE {
+  Status StreamedEcho(
+      ServerContext* context,
+      ServerUnaryStreamer<EchoRequest, EchoResponse>* stream) override {
     EchoRequest req;
     EchoResponse resp;
     uint32_t next_msg_sz;
@@ -487,9 +487,9 @@ TEST_F(HybridEnd2endTest,
 class FullyStreamedUnaryDupPkg
     : public duplicate::EchoTestService::StreamedUnaryService {
  public:
-  Status StreamedEcho(ServerContext* context,
-                      ServerUnaryStreamer<EchoRequest, EchoResponse>* stream)
-      GRPC_OVERRIDE {
+  Status StreamedEcho(
+      ServerContext* context,
+      ServerUnaryStreamer<EchoRequest, EchoResponse>* stream) override {
     EchoRequest req;
     EchoResponse resp;
     uint32_t next_msg_sz;
@@ -528,7 +528,7 @@ class SplitResponseStreamDupPkg
  public:
   Status StreamedResponseStream(
       ServerContext* context,
-      ServerSplitStreamer<EchoRequest, EchoResponse>* stream) GRPC_OVERRIDE {
+      ServerSplitStreamer<EchoRequest, EchoResponse>* stream) override {
     EchoRequest req;
     EchoResponse resp;
     uint32_t next_msg_sz;
@@ -568,7 +568,7 @@ class FullySplitStreamedDupPkg
  public:
   Status StreamedResponseStream(
       ServerContext* context,
-      ServerSplitStreamer<EchoRequest, EchoResponse>* stream) GRPC_OVERRIDE {
+      ServerSplitStreamer<EchoRequest, EchoResponse>* stream) override {
     EchoRequest req;
     EchoResponse resp;
     uint32_t next_msg_sz;
@@ -605,9 +605,9 @@ TEST_F(HybridEnd2endTest,
 // Add a second service that is fully server streamed
 class FullyStreamedDupPkg : public duplicate::EchoTestService::StreamedService {
  public:
-  Status StreamedEcho(ServerContext* context,
-                      ServerUnaryStreamer<EchoRequest, EchoResponse>* stream)
-      GRPC_OVERRIDE {
+  Status StreamedEcho(
+      ServerContext* context,
+      ServerUnaryStreamer<EchoRequest, EchoResponse>* stream) override {
     EchoRequest req;
     EchoResponse resp;
     uint32_t next_msg_sz;
@@ -620,7 +620,7 @@ class FullyStreamedDupPkg : public duplicate::EchoTestService::StreamedService {
   }
   Status StreamedResponseStream(
       ServerContext* context,
-      ServerSplitStreamer<EchoRequest, EchoResponse>* stream) GRPC_OVERRIDE {
+      ServerSplitStreamer<EchoRequest, EchoResponse>* stream) override {
     EchoRequest req;
     EchoResponse resp;
     uint32_t next_msg_sz;
diff --git a/test/cpp/end2end/mock_test.cc b/test/cpp/end2end/mock_test.cc
index 0da5861b67..d6664da5a0 100644
--- a/test/cpp/end2end/mock_test.cc
+++ b/test/cpp/end2end/mock_test.cc
@@ -61,46 +61,44 @@ namespace testing {
 
 namespace {
 template <class W, class R>
-class MockClientReaderWriter GRPC_FINAL
-    : public ClientReaderWriterInterface<W, R> {
+class MockClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
  public:
-  void WaitForInitialMetadata() GRPC_OVERRIDE {}
-  bool NextMessageSize(uint32_t* sz) GRPC_OVERRIDE {
+  void WaitForInitialMetadata() override {}
+  bool NextMessageSize(uint32_t* sz) override {
     *sz = UINT_MAX;
     return true;
   }
-  bool Read(R* msg) GRPC_OVERRIDE { return true; }
-  bool Write(const W& msg) GRPC_OVERRIDE { return true; }
-  bool WritesDone() GRPC_OVERRIDE { return true; }
-  Status Finish() GRPC_OVERRIDE { return Status::OK; }
+  bool Read(R* msg) override { return true; }
+  bool Write(const W& msg) override { return true; }
+  bool WritesDone() override { return true; }
+  Status Finish() override { return Status::OK; }
 };
 template <>
-class MockClientReaderWriter<EchoRequest, EchoResponse> GRPC_FINAL
+class MockClientReaderWriter<EchoRequest, EchoResponse> final
     : public ClientReaderWriterInterface<EchoRequest, EchoResponse> {
  public:
   MockClientReaderWriter() : writes_done_(false) {}
-  void WaitForInitialMetadata() GRPC_OVERRIDE {}
-  bool NextMessageSize(uint32_t* sz) GRPC_OVERRIDE {
+  void WaitForInitialMetadata() override {}
+  bool NextMessageSize(uint32_t* sz) override {
     *sz = UINT_MAX;
     return true;
   }
-  bool Read(EchoResponse* msg) GRPC_OVERRIDE {
+  bool Read(EchoResponse* msg) override {
     if (writes_done_) return false;
     msg->set_message(last_message_);
     return true;
   }
 
-  bool Write(const EchoRequest& msg,
-             const WriteOptions& options) GRPC_OVERRIDE {
+  bool Write(const EchoRequest& msg, const WriteOptions& options) override {
     gpr_log(GPR_INFO, "mock recv msg %s", msg.message().c_str());
     last_message_ = msg.message();
     return true;
   }
-  bool WritesDone() GRPC_OVERRIDE {
+  bool WritesDone() override {
     writes_done_ = true;
     return true;
   }
-  Status Finish() GRPC_OVERRIDE { return Status::OK; }
+  Status Finish() override { return Status::OK; }
 
  private:
   bool writes_done_;
@@ -113,51 +111,51 @@ class MockStub : public EchoTestService::StubInterface {
   MockStub() {}
   ~MockStub() {}
   Status Echo(ClientContext* context, const EchoRequest& request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     response->set_message(request.message());
     return Status::OK;
   }
   Status Unimplemented(ClientContext* context, const EchoRequest& request,
-                       EchoResponse* response) GRPC_OVERRIDE {
+                       EchoResponse* response) override {
     return Status::OK;
   }
 
  private:
   ClientAsyncResponseReaderInterface<EchoResponse>* AsyncEchoRaw(
       ClientContext* context, const EchoRequest& request,
-      CompletionQueue* cq) GRPC_OVERRIDE {
+      CompletionQueue* cq) override {
     return nullptr;
   }
   ClientWriterInterface<EchoRequest>* RequestStreamRaw(
-      ClientContext* context, EchoResponse* response) GRPC_OVERRIDE {
+      ClientContext* context, EchoResponse* response) override {
     return nullptr;
   }
   ClientAsyncWriterInterface<EchoRequest>* AsyncRequestStreamRaw(
       ClientContext* context, EchoResponse* response, CompletionQueue* cq,
-      void* tag) GRPC_OVERRIDE {
+      void* tag) override {
     return nullptr;
   }
   ClientReaderInterface<EchoResponse>* ResponseStreamRaw(
-      ClientContext* context, const EchoRequest& request) GRPC_OVERRIDE {
+      ClientContext* context, const EchoRequest& request) override {
     return nullptr;
   }
   ClientAsyncReaderInterface<EchoResponse>* AsyncResponseStreamRaw(
       ClientContext* context, const EchoRequest& request, CompletionQueue* cq,
-      void* tag) GRPC_OVERRIDE {
+      void* tag) override {
     return nullptr;
   }
   ClientReaderWriterInterface<EchoRequest, EchoResponse>* BidiStreamRaw(
-      ClientContext* context) GRPC_OVERRIDE {
+      ClientContext* context) override {
     return new MockClientReaderWriter<EchoRequest, EchoResponse>();
   }
   ClientAsyncReaderWriterInterface<EchoRequest, EchoResponse>*
   AsyncBidiStreamRaw(ClientContext* context, CompletionQueue* cq,
-                     void* tag) GRPC_OVERRIDE {
+                     void* tag) override {
     return nullptr;
   }
   ClientAsyncResponseReaderInterface<EchoResponse>* AsyncUnimplementedRaw(
       ClientContext* context, const EchoRequest& request,
-      CompletionQueue* cq) GRPC_OVERRIDE {
+      CompletionQueue* cq) override {
     return nullptr;
   }
 };
@@ -216,14 +214,14 @@ class FakeClient {
 class TestServiceImpl : public EchoTestService::Service {
  public:
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     response->set_message(request->message());
     return Status::OK;
   }
 
-  Status BidiStream(ServerContext* context,
-                    ServerReaderWriter<EchoResponse, EchoRequest>* stream)
-      GRPC_OVERRIDE {
+  Status BidiStream(
+      ServerContext* context,
+      ServerReaderWriter<EchoResponse, EchoRequest>* stream) override {
     EchoRequest request;
     EchoResponse response;
     while (stream->Read(&request)) {
@@ -239,7 +237,7 @@ class MockTest : public ::testing::Test {
  protected:
   MockTest() {}
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     int port = grpc_pick_unused_port_or_die();
     server_address_ << "localhost:" << port;
     // Setup server
@@ -250,7 +248,7 @@ class MockTest : public ::testing::Test {
     server_ = builder.BuildAndStart();
   }
 
-  void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
+  void TearDown() override { server_->Shutdown(); }
 
   void ResetStub() {
     std::shared_ptr<Channel> channel =
diff --git a/test/cpp/end2end/proto_server_reflection_test.cc b/test/cpp/end2end/proto_server_reflection_test.cc
index 75efd01f06..8b9688d200 100644
--- a/test/cpp/end2end/proto_server_reflection_test.cc
+++ b/test/cpp/end2end/proto_server_reflection_test.cc
@@ -56,7 +56,7 @@ class ProtoServerReflectionTest : public ::testing::Test {
  public:
   ProtoServerReflectionTest() {}
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     port_ = grpc_pick_unused_port_or_die();
     ref_desc_pool_ = protobuf::DescriptorPool::generated_pool();
 
diff --git a/test/cpp/end2end/round_robin_end2end_test.cc b/test/cpp/end2end/round_robin_end2end_test.cc
new file mode 100644
index 0000000000..76211cbdd3
--- /dev/null
+++ b/test/cpp/end2end/round_robin_end2end_test.cc
@@ -0,0 +1,211 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <memory>
+#include <mutex>
+#include <thread>
+
+#include <grpc++/channel.h>
+#include <grpc++/client_context.h>
+#include <grpc++/create_channel.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/time.h>
+#include <gtest/gtest.h>
+
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+#include "test/cpp/end2end/test_service_impl.h"
+
+using grpc::testing::EchoRequest;
+using grpc::testing::EchoResponse;
+using std::chrono::system_clock;
+
+namespace grpc {
+namespace testing {
+namespace {
+
+// Subclass of TestServiceImpl that increments a request counter for
+// every call to the Echo RPC.
+class MyTestServiceImpl : public TestServiceImpl {
+ public:
+  MyTestServiceImpl() : request_count_(0) {}
+
+  Status Echo(ServerContext* context, const EchoRequest* request,
+              EchoResponse* response) override {
+    {
+      std::unique_lock<std::mutex> lock(mu_);
+      ++request_count_;
+    }
+    return TestServiceImpl::Echo(context, request, response);
+  }
+
+  int request_count() {
+    std::unique_lock<std::mutex> lock(mu_);
+    return request_count_;
+  }
+
+ private:
+  std::mutex mu_;
+  int request_count_;
+};
+
+class RoundRobinEnd2endTest : public ::testing::Test {
+ protected:
+  RoundRobinEnd2endTest() : server_host_("localhost") {}
+
+  void StartServers(int num_servers) {
+    for (int i = 0; i < num_servers; ++i) {
+      servers_.emplace_back(new ServerData(server_host_));
+    }
+  }
+
+  void TearDown() override {
+    for (size_t i = 0; i < servers_.size(); ++i) {
+      servers_[i]->Shutdown();
+    }
+  }
+
+  void ResetStub(bool round_robin) {
+    ChannelArguments args;
+    if (round_robin) args.SetLoadBalancingPolicyName("round_robin");
+    std::ostringstream uri;
+    uri << "ipv4:///";
+    for (size_t i = 0; i < servers_.size() - 1; ++i) {
+      uri << "127.0.0.1:" << servers_[i]->port_ << ",";
+    }
+    uri << "127.0.0.1:" << servers_[servers_.size() - 1]->port_;
+    std::shared_ptr<Channel> channel =
+        CreateCustomChannel(uri.str(), InsecureChannelCredentials(), args);
+    stub_ = grpc::testing::EchoTestService::NewStub(channel);
+  }
+
+  void SendRpc(int num_rpcs) {
+    EchoRequest request;
+    EchoResponse response;
+    request.set_message("Live long and prosper.");
+    for (int i = 0; i < num_rpcs; i++) {
+      ClientContext context;
+      Status status = stub_->Echo(&context, request, &response);
+      EXPECT_TRUE(status.ok());
+      EXPECT_EQ(response.message(), request.message());
+    }
+  }
+
+  struct ServerData {
+    int port_;
+    std::unique_ptr<Server> server_;
+    MyTestServiceImpl service_;
+    std::unique_ptr<std::thread> thread_;
+
+    explicit ServerData(const grpc::string& server_host) {
+      port_ = grpc_pick_unused_port_or_die();
+      gpr_log(GPR_INFO, "starting server on port %d", port_);
+      std::mutex mu;
+      std::condition_variable cond;
+      thread_.reset(new std::thread(
+          std::bind(&ServerData::Start, this, server_host, &mu, &cond)));
+      std::unique_lock<std::mutex> lock(mu);
+      cond.wait(lock);
+      gpr_log(GPR_INFO, "server startup complete");
+    }
+
+    void Start(const grpc::string& server_host, std::mutex* mu,
+               std::condition_variable* cond) {
+      std::ostringstream server_address;
+      server_address << server_host << ":" << port_;
+      ServerBuilder builder;
+      builder.AddListeningPort(server_address.str(),
+                               InsecureServerCredentials());
+      builder.RegisterService(&service_);
+      server_ = builder.BuildAndStart();
+      std::lock_guard<std::mutex> lock(*mu);
+      cond->notify_one();
+    }
+
+    void Shutdown() {
+      server_->Shutdown();
+      thread_->join();
+    }
+  };
+
+  const grpc::string server_host_;
+  CompletionQueue cli_cq_;
+  std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
+  std::vector<std::unique_ptr<ServerData>> servers_;
+};
+
+TEST_F(RoundRobinEnd2endTest, PickFirst) {
+  // Start servers and send one RPC per server.
+  const int kNumServers = 3;
+  StartServers(kNumServers);
+  ResetStub(false /* round_robin */);
+  SendRpc(kNumServers);
+  // All requests should have gone to a single server.
+  bool found = false;
+  for (size_t i = 0; i < servers_.size(); ++i) {
+    const int request_count = servers_[i]->service_.request_count();
+    if (request_count == kNumServers) {
+      found = true;
+    } else {
+      EXPECT_EQ(0, request_count);
+    }
+  }
+  EXPECT_TRUE(found);
+}
+
+TEST_F(RoundRobinEnd2endTest, RoundRobin) {
+  // Start servers and send one RPC per server.
+  const int kNumServers = 3;
+  StartServers(kNumServers);
+  ResetStub(true /* round_robin */);
+  SendRpc(kNumServers);
+  // One request should have gone to each server.
+  for (size_t i = 0; i < servers_.size(); ++i) {
+    EXPECT_EQ(1, servers_[i]->service_.request_count());
+  }
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/test/cpp/end2end/server_builder_plugin_test.cc b/test/cpp/end2end/server_builder_plugin_test.cc
index b967a5d1e9..1b6f4ce37d 100644
--- a/test/cpp/end2end/server_builder_plugin_test.cc
+++ b/test/cpp/end2end/server_builder_plugin_test.cc
@@ -31,13 +31,14 @@
  *
  */
 
+#include <thread>
+
 #include <grpc++/channel.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/impl/server_builder_option.h>
 #include <grpc++/impl/server_builder_plugin.h>
 #include <grpc++/impl/server_initializer.h>
-#include <grpc++/impl/thd.h>
 #include <grpc++/security/credentials.h>
 #include <grpc++/security/server_credentials.h>
 #include <grpc++/server.h>
@@ -65,29 +66,29 @@ class TestServerBuilderPlugin : public ServerBuilderPlugin {
     register_service_ = false;
   }
 
-  grpc::string name() GRPC_OVERRIDE { return PLUGIN_NAME; }
+  grpc::string name() override { return PLUGIN_NAME; }
 
-  void InitServer(ServerInitializer* si) GRPC_OVERRIDE {
+  void InitServer(ServerInitializer* si) override {
     init_server_is_called_ = true;
     if (register_service_) {
       si->RegisterService(service_);
     }
   }
 
-  void Finish(ServerInitializer* si) GRPC_OVERRIDE { finish_is_called_ = true; }
+  void Finish(ServerInitializer* si) override { finish_is_called_ = true; }
 
-  void ChangeArguments(const grpc::string& name, void* value) GRPC_OVERRIDE {
+  void ChangeArguments(const grpc::string& name, void* value) override {
     change_arguments_is_called_ = true;
   }
 
-  bool has_async_methods() const GRPC_OVERRIDE {
+  bool has_async_methods() const override {
     if (register_service_) {
       return service_->has_async_methods();
     }
     return false;
   }
 
-  bool has_sync_methods() const GRPC_OVERRIDE {
+  bool has_sync_methods() const override {
     if (register_service_) {
       return service_->has_synchronous_methods();
     }
@@ -112,10 +113,10 @@ class InsertPluginServerBuilderOption : public ServerBuilderOption {
  public:
   InsertPluginServerBuilderOption() { register_service_ = false; }
 
-  void UpdateArguments(ChannelArguments* arg) GRPC_OVERRIDE {}
+  void UpdateArguments(ChannelArguments* arg) override {}
 
-  void UpdatePlugins(std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins)
-      GRPC_OVERRIDE {
+  void UpdatePlugins(
+      std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins) override {
     plugins->clear();
 
     std::unique_ptr<TestServerBuilderPlugin> plugin(
@@ -154,7 +155,7 @@ class ServerBuilderPluginTest : public ::testing::TestWithParam<bool> {
  public:
   ServerBuilderPluginTest() {}
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     port_ = grpc_pick_unused_port_or_die();
     builder_.reset(new ServerBuilder());
   }
@@ -191,7 +192,7 @@ class ServerBuilderPluginTest : public ::testing::TestWithParam<bool> {
     // we run some tests without a service, and for those we need to supply a
     // frequently polled completion queue
     cq_ = builder_->AddCompletionQueue();
-    cq_thread_ = new grpc::thread(&ServerBuilderPluginTest::RunCQ, this);
+    cq_thread_ = new std::thread(&ServerBuilderPluginTest::RunCQ, this);
     server_ = builder_->BuildAndStart();
     EXPECT_TRUE(CheckPresent());
   }
@@ -202,7 +203,7 @@ class ServerBuilderPluginTest : public ::testing::TestWithParam<bool> {
     stub_ = grpc::testing::EchoTestService::NewStub(channel_);
   }
 
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     auto plugin = CheckPresent();
     EXPECT_TRUE(plugin);
     EXPECT_TRUE(plugin->init_server_is_called());
@@ -225,7 +226,7 @@ class ServerBuilderPluginTest : public ::testing::TestWithParam<bool> {
   std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
   std::unique_ptr<ServerCompletionQueue> cq_;
   std::unique_ptr<Server> server_;
-  grpc::thread* cq_thread_;
+  std::thread* cq_thread_;
   TestServiceImpl service_;
   int port_;
 
diff --git a/test/cpp/end2end/server_crash_test.cc b/test/cpp/end2end/server_crash_test.cc
index 16a5fa2322..8cee1403dc 100644
--- a/test/cpp/end2end/server_crash_test.cc
+++ b/test/cpp/end2end/server_crash_test.cc
@@ -60,14 +60,13 @@ namespace testing {
 
 namespace {
 
-class ServiceImpl GRPC_FINAL
-    : public ::grpc::testing::EchoTestService::Service {
+class ServiceImpl final : public ::grpc::testing::EchoTestService::Service {
  public:
   ServiceImpl() : bidi_stream_count_(0), response_stream_count_(0) {}
 
-  Status BidiStream(ServerContext* context,
-                    ServerReaderWriter<EchoResponse, EchoRequest>* stream)
-      GRPC_OVERRIDE {
+  Status BidiStream(
+      ServerContext* context,
+      ServerReaderWriter<EchoResponse, EchoRequest>* stream) override {
     bidi_stream_count_++;
     EchoRequest request;
     EchoResponse response;
@@ -82,7 +81,7 @@ class ServiceImpl GRPC_FINAL
   }
 
   Status ResponseStream(ServerContext* context, const EchoRequest* request,
-                        ServerWriter<EchoResponse>* writer) GRPC_OVERRIDE {
+                        ServerWriter<EchoResponse>* writer) override {
     EchoResponse response;
     response_stream_count_++;
     for (int i = 0;; i++) {
diff --git a/test/cpp/end2end/shutdown_test.cc b/test/cpp/end2end/shutdown_test.cc
index 4cba3b1c81..5b52b1fc1a 100644
--- a/test/cpp/end2end/shutdown_test.cc
+++ b/test/cpp/end2end/shutdown_test.cc
@@ -61,7 +61,7 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
   explicit TestServiceImpl(gpr_event* ev) : ev_(ev) {}
 
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     gpr_event_set(ev_, (void*)1);
     while (!context->IsCancelled()) {
     }
@@ -76,7 +76,7 @@ class ShutdownTest : public ::testing::Test {
  public:
   ShutdownTest() : shutdown_(false), service_(&ev_) { gpr_event_init(&ev_); }
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     port_ = grpc_pick_unused_port_or_die();
     server_ = SetUpServer(port_);
   }
@@ -91,7 +91,7 @@ class ShutdownTest : public ::testing::Test {
     return server;
   }
 
-  void TearDown() GRPC_OVERRIDE { GPR_ASSERT(shutdown_); }
+  void TearDown() override { GPR_ASSERT(shutdown_); }
 
   void ResetStub() {
     string target = "dns:localhost:" + to_string(port_);
diff --git a/test/cpp/end2end/streaming_throughput_test.cc b/test/cpp/end2end/streaming_throughput_test.cc
index fbef761ca9..302583766b 100644
--- a/test/cpp/end2end/streaming_throughput_test.cc
+++ b/test/cpp/end2end/streaming_throughput_test.cc
@@ -121,9 +121,9 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
   }
 
   // Only implement the one method we will be calling for brevity.
-  Status BidiStream(ServerContext* context,
-                    ServerReaderWriter<EchoResponse, EchoRequest>* stream)
-      GRPC_OVERRIDE {
+  Status BidiStream(
+      ServerContext* context,
+      ServerReaderWriter<EchoResponse, EchoRequest>* stream) override {
     EchoRequest request;
     gpr_atm should_exit;
     gpr_atm_rel_store(&should_exit, static_cast<gpr_atm>(0));
@@ -147,7 +147,7 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
 
 class End2endTest : public ::testing::Test {
  protected:
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     int port = grpc_pick_unused_port_or_die();
     server_address_ << "localhost:" << port;
     // Setup server
@@ -158,7 +158,7 @@ class End2endTest : public ::testing::Test {
     server_ = builder.BuildAndStart();
   }
 
-  void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
+  void TearDown() override { server_->Shutdown(); }
 
   void ResetStub() {
     std::shared_ptr<Channel> channel =
diff --git a/test/cpp/end2end/test_service_impl.h b/test/cpp/end2end/test_service_impl.h
index c89f88c900..88e0be7bca 100644
--- a/test/cpp/end2end/test_service_impl.h
+++ b/test/cpp/end2end/test_service_impl.h
@@ -63,20 +63,20 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
       : signal_client_(false), host_(new grpc::string(host)) {}
 
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE;
+              EchoResponse* response) override;
 
   // Unimplemented is left unimplemented to test the returned error.
 
   Status RequestStream(ServerContext* context,
                        ServerReader<EchoRequest>* reader,
-                       EchoResponse* response) GRPC_OVERRIDE;
+                       EchoResponse* response) override;
 
   Status ResponseStream(ServerContext* context, const EchoRequest* request,
-                        ServerWriter<EchoResponse>* writer) GRPC_OVERRIDE;
+                        ServerWriter<EchoResponse>* writer) override;
 
-  Status BidiStream(ServerContext* context,
-                    ServerReaderWriter<EchoResponse, EchoRequest>* stream)
-      GRPC_OVERRIDE;
+  Status BidiStream(
+      ServerContext* context,
+      ServerReaderWriter<EchoResponse, EchoRequest>* stream) override;
 
   bool signal_client() {
     std::unique_lock<std::mutex> lock(mu_);
diff --git a/test/cpp/end2end/thread_stress_test.cc b/test/cpp/end2end/thread_stress_test.cc
index 0b9d4cda9f..fe5a219eed 100644
--- a/test/cpp/end2end/thread_stress_test.cc
+++ b/test/cpp/end2end/thread_stress_test.cc
@@ -86,12 +86,12 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
   TestServiceImpl() : signal_client_(false) {}
 
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     response->set_message(request->message());
     MaybeEchoDeadline(context, request, response);
     if (request->has_param() && request->param().client_cancel_after_us()) {
       {
-        unique_lock<mutex> lock(mu_);
+        std::unique_lock<std::mutex> lock(mu_);
         signal_client_ = true;
       }
       while (!context->IsCancelled()) {
@@ -118,7 +118,7 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
 
   Status RequestStream(ServerContext* context,
                        ServerReader<EchoRequest>* reader,
-                       EchoResponse* response) GRPC_OVERRIDE {
+                       EchoResponse* response) override {
     EchoRequest request;
     response->set_message("");
     while (reader->Read(&request)) {
@@ -130,7 +130,7 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
   // Return 3 messages.
   // TODO(yangg) make it generic by adding a parameter into EchoRequest
   Status ResponseStream(ServerContext* context, const EchoRequest* request,
-                        ServerWriter<EchoResponse>* writer) GRPC_OVERRIDE {
+                        ServerWriter<EchoResponse>* writer) override {
     EchoResponse response;
     response.set_message(request->message() + "0");
     writer->Write(response);
@@ -142,9 +142,9 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
     return Status::OK;
   }
 
-  Status BidiStream(ServerContext* context,
-                    ServerReaderWriter<EchoResponse, EchoRequest>* stream)
-      GRPC_OVERRIDE {
+  Status BidiStream(
+      ServerContext* context,
+      ServerReaderWriter<EchoResponse, EchoRequest>* stream) override {
     EchoRequest request;
     EchoResponse response;
     while (stream->Read(&request)) {
@@ -156,20 +156,20 @@ class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
   }
 
   bool signal_client() {
-    unique_lock<mutex> lock(mu_);
+    std::unique_lock<std::mutex> lock(mu_);
     return signal_client_;
   }
 
  private:
   bool signal_client_;
-  mutex mu_;
+  std::mutex mu_;
 };
 
 class TestServiceImplDupPkg
     : public ::grpc::testing::duplicate::EchoTestService::Service {
  public:
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     response->set_message("no package");
     return Status::OK;
   }
@@ -215,12 +215,12 @@ class CommonStressTest {
 
 class CommonStressTestSyncServer : public CommonStressTest<TestServiceImpl> {
  public:
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     ServerBuilder builder;
     SetUpStart(&builder, &service_);
     SetUpEnd(&builder);
   }
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     TearDownStart();
     TearDownEnd();
   }
@@ -232,7 +232,7 @@ class CommonStressTestSyncServer : public CommonStressTest<TestServiceImpl> {
 class CommonStressTestAsyncServer
     : public CommonStressTest<grpc::testing::EchoTestService::AsyncService> {
  public:
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     shutting_down_ = false;
     ServerBuilder builder;
     SetUpStart(&builder, &service_);
@@ -247,9 +247,9 @@ class CommonStressTestAsyncServer
           new std::thread(&CommonStressTestAsyncServer::ProcessRpcs, this));
     }
   }
-  void TearDown() GRPC_OVERRIDE {
+  void TearDown() override {
     {
-      unique_lock<mutex> l(mu_);
+      std::unique_lock<std::mutex> l(mu_);
       TearDownStart();
       shutting_down_ = true;
       cq_->Shutdown();
@@ -292,7 +292,7 @@ class CommonStressTestAsyncServer
     }
   }
   void RefreshContext(int i) {
-    unique_lock<mutex> l(mu_);
+    std::unique_lock<std::mutex> l(mu_);
     if (!shutting_down_) {
       contexts_[i].state = Context::READY;
       contexts_[i].srv_ctx.reset(new ServerContext);
@@ -315,7 +315,7 @@ class CommonStressTestAsyncServer
   ::grpc::testing::EchoTestService::AsyncService service_;
   std::unique_ptr<ServerCompletionQueue> cq_;
   bool shutting_down_;
-  mutex mu_;
+  std::mutex mu_;
   std::vector<std::thread*> server_threads_;
 };
 
@@ -323,8 +323,8 @@ template <class Common>
 class End2endTest : public ::testing::Test {
  protected:
   End2endTest() {}
-  void SetUp() GRPC_OVERRIDE { common_.SetUp(); }
-  void TearDown() GRPC_OVERRIDE { common_.TearDown(); }
+  void SetUp() override { common_.SetUp(); }
+  void TearDown() override { common_.TearDown(); }
   void ResetStub() { common_.ResetStub(); }
 
   Common common_;
@@ -369,8 +369,8 @@ class AsyncClientEnd2endTest : public ::testing::Test {
  protected:
   AsyncClientEnd2endTest() : rpcs_outstanding_(0) {}
 
-  void SetUp() GRPC_OVERRIDE { common_.SetUp(); }
-  void TearDown() GRPC_OVERRIDE {
+  void SetUp() override { common_.SetUp(); }
+  void TearDown() override {
     void* ignored_tag;
     bool ignored_ok;
     while (cq_.Next(&ignored_tag, &ignored_ok))
@@ -379,7 +379,7 @@ class AsyncClientEnd2endTest : public ::testing::Test {
   }
 
   void Wait() {
-    unique_lock<mutex> l(mu_);
+    std::unique_lock<std::mutex> l(mu_);
     while (rpcs_outstanding_ != 0) {
       cv_.wait(l);
     }
@@ -404,7 +404,7 @@ class AsyncClientEnd2endTest : public ::testing::Test {
       call->response_reader->Finish(&call->response, &call->status,
                                     (void*)call);
 
-      unique_lock<mutex> l(mu_);
+      std::unique_lock<std::mutex> l(mu_);
       rpcs_outstanding_++;
     }
   }
@@ -422,7 +422,7 @@ class AsyncClientEnd2endTest : public ::testing::Test {
 
       bool notify;
       {
-        unique_lock<mutex> l(mu_);
+        std::unique_lock<std::mutex> l(mu_);
         rpcs_outstanding_--;
         notify = (rpcs_outstanding_ == 0);
       }
@@ -434,8 +434,8 @@ class AsyncClientEnd2endTest : public ::testing::Test {
 
   Common common_;
   CompletionQueue cq_;
-  mutex mu_;
-  condition_variable cv_;
+  std::mutex mu_;
+  std::condition_variable cv_;
   int rpcs_outstanding_;
 };
 
diff --git a/test/cpp/grpclb/grpclb_test.cc b/test/cpp/grpclb/grpclb_test.cc
index f3cfe53bda..175786332b 100644
--- a/test/cpp/grpclb/grpclb_test.cc
+++ b/test/cpp/grpclb/grpclb_test.cc
@@ -76,10 +76,22 @@ extern "C" {
 // - Send a serverlist with faulty ip:port addresses (port > 2^16, etc).
 // - Test reception of invalid serverlist
 // - Test pinging
-// - Test against a non-LB server. That server should return UNIMPLEMENTED and
-//   the call should fail.
+// - Test against a non-LB server.
 // - Random LB server closing the stream unexpectedly.
 // - Test using DNS-resolvable names (localhost?)
+//
+// Findings from end to end testing to be covered here:
+// - Handling of LB servers restart, including reconnection after backing-off
+//   retries.
+// - Destruction of load balanced channel (and therefore of grpclb instance)
+//   while:
+//   1) the internal LB call is still active. This should work by virtue
+//   of the weak reference the LB call holds. The call should be terminated as
+//   part of the grpclb shutdown process.
+//   2) the retry timer is active. Again, the weak reference it holds should
+//   prevent a premature call to \a glb_destroy.
+// - Restart of backend servers with no changes to serverlist. This exercises
+//   the RR handover mechanism.
 
 namespace grpc {
 namespace {
@@ -144,7 +156,6 @@ static grpc_slice build_response_payload_slice(
     // disfunctional implementation of std::to_string in gcc 4.4, which doesn't
     // have a version for int but does have one for long long int.
     string token_data = "token" + std::to_string((long long int)ports[i]);
-    token_data.resize(64, '-');
     server->set_load_balance_token(token_data);
   }
   const grpc::string &enc_resp = response.SerializeAsString();
@@ -333,7 +344,6 @@ static void start_backend_server(server_fixture *sf) {
     // disfunctional implementation of std::to_string in gcc 4.4, which doesn't
     // have a version for int but does have one for long long int.
     string expected_token = "token" + std::to_string((long long int)sf->port);
-    expected_token.resize(64, '-');
     GPR_ASSERT(contains_metadata(&request_metadata_recv, "lb-token",
                                  expected_token.c_str()));
 
@@ -634,7 +644,9 @@ static test_fixture setup_test_fixture(int lb_server_update_delay_ms) {
   gpr_thd_new(&tf.lb_server.tid, fork_lb_server, &tf.lb_server, &options);
 
   char *server_uri;
-  gpr_asprintf(&server_uri, "test:%s?lb_policy=grpclb&lb_enabled=1",
+  // The grpclb LB policy will be automatically selected by virtue of
+  // the fact that the returned addresses are balancer addresses.
+  gpr_asprintf(&server_uri, "test:%s?lb_enabled=1",
                tf.lb_server.servers_hostport);
   setup_client(server_uri, &tf.client);
   gpr_free(server_uri);
diff --git a/test/cpp/interop/stress_test.cc b/test/cpp/interop/stress_test.cc
index 46d09b7f28..fc35db5233 100644
--- a/test/cpp/interop/stress_test.cc
+++ b/test/cpp/interop/stress_test.cc
@@ -40,7 +40,6 @@
 #include <gflags/gflags.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/grpc++.h>
-#include <grpc++/impl/thd.h>
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 
@@ -321,7 +320,7 @@ int main(int argc, char** argv) {
 
   gpr_log(GPR_INFO, "Starting test(s)..");
 
-  std::vector<grpc::thread> test_threads;
+  std::vector<std::thread> test_threads;
 
   // Create and start the test threads.
   // Note that:
@@ -361,7 +360,7 @@ int main(int argc, char** argv) {
                       "/stress_test/server_%d/channel_%d/stub_%d/qps",
                       server_idx, channel_idx, stub_idx);
 
-        test_threads.emplace_back(grpc::thread(
+        test_threads.emplace_back(std::thread(
             &StressTestInteropClient::MainLoop, client,
             metrics_service.CreateQpsGauge(buffer, &is_already_created)));
 
diff --git a/test/cpp/microbenchmarks/noop-benchmark.cc b/test/cpp/microbenchmarks/noop-benchmark.cc
new file mode 100644
index 0000000000..6b06c69c6e
--- /dev/null
+++ b/test/cpp/microbenchmarks/noop-benchmark.cc
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/* This benchmark exists to ensure that the google_benchmark integration is
+ * working */
+
+#include "third_party/google_benchmark/include/benchmark/benchmark.h"
+
+static void BM_NoOp(benchmark::State& state) {
+  while (state.KeepRunning()) {
+  }
+}
+BENCHMARK(BM_NoOp);
+
+BENCHMARK_MAIN();
diff --git a/test/cpp/qps/client.h b/test/cpp/qps/client.h
index d63346a582..3a0c359b4c 100644
--- a/test/cpp/qps/client.h
+++ b/test/cpp/qps/client.h
@@ -113,7 +113,7 @@ class ClientRequestCreator<ByteBuffer> {
   }
 };
 
-class HistogramEntry GRPC_FINAL {
+class HistogramEntry final {
  public:
   HistogramEntry() : value_used_(false), status_used_(false) {}
   bool value_used() const { return value_used_; }
diff --git a/test/cpp/qps/client_async.cc b/test/cpp/qps/client_async.cc
index 4d36a6ba42..2ec6a5a23b 100644
--- a/test/cpp/qps/client_async.cc
+++ b/test/cpp/qps/client_async.cc
@@ -93,8 +93,8 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
         callback_(on_done),
         next_issue_(next_issue),
         start_req_(start_req) {}
-  ~ClientRpcContextUnaryImpl() GRPC_OVERRIDE {}
-  void Start(CompletionQueue* cq) GRPC_OVERRIDE {
+  ~ClientRpcContextUnaryImpl() override {}
+  void Start(CompletionQueue* cq) override {
     cq_ = cq;
     if (!next_issue_) {  // ready to issue
       RunNextState(true, nullptr);
@@ -102,7 +102,7 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
       alarm_.reset(new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
     }
   }
-  bool RunNextState(bool ok, HistogramEntry* entry) GRPC_OVERRIDE {
+  bool RunNextState(bool ok, HistogramEntry* entry) override {
     switch (next_state_) {
       case State::READY:
         start_ = UsageTimer::Now();
@@ -121,7 +121,7 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
         return false;
     }
   }
-  ClientRpcContext* StartNewClone() GRPC_OVERRIDE {
+  ClientRpcContext* StartNewClone() override {
     return new ClientRpcContextUnaryImpl(stub_, req_, next_issue_, start_req_,
                                          callback_);
   }
@@ -217,7 +217,7 @@ class AsyncClient : public ClientImpl<StubType, RequestType> {
     }
     return num_threads;
   }
-  void DestroyMultithreading() GRPC_OVERRIDE GRPC_FINAL {
+  void DestroyMultithreading() override final {
     for (auto ss = shutdown_state_.begin(); ss != shutdown_state_.end(); ++ss) {
       std::lock_guard<std::mutex> lock((*ss)->mutex);
       (*ss)->shutdown = true;
@@ -228,8 +228,7 @@ class AsyncClient : public ClientImpl<StubType, RequestType> {
     this->EndThreads();  // this needed for resolution
   }
 
-  bool ThreadFunc(HistogramEntry* entry,
-                  size_t thread_idx) GRPC_OVERRIDE GRPC_FINAL {
+  bool ThreadFunc(HistogramEntry* entry, size_t thread_idx) override final {
     void* got_tag;
     bool ok;
 
@@ -279,7 +278,7 @@ static std::unique_ptr<BenchmarkService::Stub> BenchmarkStubCreator(
   return BenchmarkService::NewStub(ch);
 }
 
-class AsyncUnaryClient GRPC_FINAL
+class AsyncUnaryClient final
     : public AsyncClient<BenchmarkService::Stub, SimpleRequest> {
  public:
   explicit AsyncUnaryClient(const ClientConfig& config)
@@ -287,7 +286,7 @@ class AsyncUnaryClient GRPC_FINAL
             config, SetupCtx, BenchmarkStubCreator) {
     StartThreads(num_async_threads_);
   }
-  ~AsyncUnaryClient() GRPC_OVERRIDE {}
+  ~AsyncUnaryClient() override {}
 
  private:
   static void CheckDone(grpc::Status s, SimpleResponse* response,
@@ -329,13 +328,13 @@ class ClientRpcContextStreamingImpl : public ClientRpcContext {
         callback_(on_done),
         next_issue_(next_issue),
         start_req_(start_req) {}
-  ~ClientRpcContextStreamingImpl() GRPC_OVERRIDE {}
-  void Start(CompletionQueue* cq) GRPC_OVERRIDE {
+  ~ClientRpcContextStreamingImpl() override {}
+  void Start(CompletionQueue* cq) override {
     cq_ = cq;
     stream_ = start_req_(stub_, &context_, cq, ClientRpcContext::tag(this));
     next_state_ = State::STREAM_IDLE;
   }
-  bool RunNextState(bool ok, HistogramEntry* entry) GRPC_OVERRIDE {
+  bool RunNextState(bool ok, HistogramEntry* entry) override {
     while (true) {
       switch (next_state_) {
         case State::STREAM_IDLE:
@@ -377,7 +376,7 @@ class ClientRpcContextStreamingImpl : public ClientRpcContext {
       }
     }
   }
-  ClientRpcContext* StartNewClone() GRPC_OVERRIDE {
+  ClientRpcContext* StartNewClone() override {
     return new ClientRpcContextStreamingImpl(stub_, req_, next_issue_,
                                              start_req_, callback_);
   }
@@ -410,7 +409,7 @@ class ClientRpcContextStreamingImpl : public ClientRpcContext {
       stream_;
 };
 
-class AsyncStreamingClient GRPC_FINAL
+class AsyncStreamingClient final
     : public AsyncClient<BenchmarkService::Stub, SimpleRequest> {
  public:
   explicit AsyncStreamingClient(const ClientConfig& config)
@@ -419,7 +418,7 @@ class AsyncStreamingClient GRPC_FINAL
     StartThreads(num_async_threads_);
   }
 
-  ~AsyncStreamingClient() GRPC_OVERRIDE {}
+  ~AsyncStreamingClient() override {}
 
  private:
   static void CheckDone(grpc::Status s, SimpleResponse* response) {}
@@ -458,8 +457,8 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
         callback_(on_done),
         next_issue_(next_issue),
         start_req_(start_req) {}
-  ~ClientRpcContextGenericStreamingImpl() GRPC_OVERRIDE {}
-  void Start(CompletionQueue* cq) GRPC_OVERRIDE {
+  ~ClientRpcContextGenericStreamingImpl() override {}
+  void Start(CompletionQueue* cq) override {
     cq_ = cq;
     const grpc::string kMethodName(
         "/grpc.testing.BenchmarkService/StreamingCall");
@@ -467,7 +466,7 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
                          ClientRpcContext::tag(this));
     next_state_ = State::STREAM_IDLE;
   }
-  bool RunNextState(bool ok, HistogramEntry* entry) GRPC_OVERRIDE {
+  bool RunNextState(bool ok, HistogramEntry* entry) override {
     while (true) {
       switch (next_state_) {
         case State::STREAM_IDLE:
@@ -509,7 +508,7 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
       }
     }
   }
-  ClientRpcContext* StartNewClone() GRPC_OVERRIDE {
+  ClientRpcContext* StartNewClone() override {
     return new ClientRpcContextGenericStreamingImpl(stub_, req_, next_issue_,
                                                     start_req_, callback_);
   }
@@ -546,7 +545,7 @@ static std::unique_ptr<grpc::GenericStub> GenericStubCreator(
   return std::unique_ptr<grpc::GenericStub>(new grpc::GenericStub(ch));
 }
 
-class GenericAsyncStreamingClient GRPC_FINAL
+class GenericAsyncStreamingClient final
     : public AsyncClient<grpc::GenericStub, ByteBuffer> {
  public:
   explicit GenericAsyncStreamingClient(const ClientConfig& config)
@@ -555,7 +554,7 @@ class GenericAsyncStreamingClient GRPC_FINAL
     StartThreads(num_async_threads_);
   }
 
-  ~GenericAsyncStreamingClient() GRPC_OVERRIDE {}
+  ~GenericAsyncStreamingClient() override {}
 
  private:
   static void CheckDone(grpc::Status s, ByteBuffer* response) {}
diff --git a/test/cpp/qps/client_sync.cc b/test/cpp/qps/client_sync.cc
index f61e80d76b..a88a24d89c 100644
--- a/test/cpp/qps/client_sync.cc
+++ b/test/cpp/qps/client_sync.cc
@@ -108,10 +108,10 @@ class SynchronousClient
   std::vector<SimpleResponse> responses_;
 
  private:
-  void DestroyMultithreading() GRPC_OVERRIDE GRPC_FINAL { EndThreads(); }
+  void DestroyMultithreading() override final { EndThreads(); }
 };
 
-class SynchronousUnaryClient GRPC_FINAL : public SynchronousClient {
+class SynchronousUnaryClient final : public SynchronousClient {
  public:
   SynchronousUnaryClient(const ClientConfig& config)
       : SynchronousClient(config) {
@@ -119,7 +119,7 @@ class SynchronousUnaryClient GRPC_FINAL : public SynchronousClient {
   }
   ~SynchronousUnaryClient() {}
 
-  bool ThreadFunc(HistogramEntry* entry, size_t thread_idx) GRPC_OVERRIDE {
+  bool ThreadFunc(HistogramEntry* entry, size_t thread_idx) override {
     if (!WaitToIssue(thread_idx)) {
       return true;
     }
@@ -135,7 +135,7 @@ class SynchronousUnaryClient GRPC_FINAL : public SynchronousClient {
   }
 };
 
-class SynchronousStreamingClient GRPC_FINAL : public SynchronousClient {
+class SynchronousStreamingClient final : public SynchronousClient {
  public:
   SynchronousStreamingClient(const ClientConfig& config)
       : SynchronousClient(config) {
@@ -165,7 +165,7 @@ class SynchronousStreamingClient GRPC_FINAL : public SynchronousClient {
     delete[] context_;
   }
 
-  bool ThreadFunc(HistogramEntry* entry, size_t thread_idx) GRPC_OVERRIDE {
+  bool ThreadFunc(HistogramEntry* entry, size_t thread_idx) override {
     if (!WaitToIssue(thread_idx)) {
       return true;
     }
diff --git a/test/cpp/qps/gen_build_yaml.py b/test/cpp/qps/gen_build_yaml.py
index 369da2c8ca..e4d9e7ac58 100755
--- a/test/cpp/qps/gen_build_yaml.py
+++ b/test/cpp/qps/gen_build_yaml.py
@@ -82,7 +82,7 @@ print yaml.dump({
       'defaults': 'boringssl',
       'cpu_cost': guess_cpu(scenario_json),
       'exclude_configs': [],
-      'timeout_seconds': 3*60
+      'timeout_seconds': 6*60
     }
     for scenario_json in scenario_config.CXXLanguage().scenarios()
     if 'scalable' in scenario_json.get('CATEGORIES', [])
diff --git a/test/cpp/qps/interarrival.h b/test/cpp/qps/interarrival.h
index 0980d5e8ba..4bef06f566 100644
--- a/test/cpp/qps/interarrival.h
+++ b/test/cpp/qps/interarrival.h
@@ -69,11 +69,11 @@ inline RandomDistInterface::~RandomDistInterface() {}
 // independent identical stationary sources. For more information,
 // see http://en.wikipedia.org/wiki/Exponential_distribution
 
-class ExpDist GRPC_FINAL : public RandomDistInterface {
+class ExpDist final : public RandomDistInterface {
  public:
   explicit ExpDist(double lambda) : lambda_recip_(1.0 / lambda) {}
-  ~ExpDist() GRPC_OVERRIDE {}
-  double transform(double uni) const GRPC_OVERRIDE {
+  ~ExpDist() override {}
+  double transform(double uni) const override {
     // Note: Use 1.0-uni above to avoid NaN if uni is 0
     return lambda_recip_ * (-log(1.0 - uni));
   }
diff --git a/test/cpp/qps/qps_worker.cc b/test/cpp/qps/qps_worker.cc
index d3e53fe14a..d437920e68 100644
--- a/test/cpp/qps/qps_worker.cc
+++ b/test/cpp/qps/qps_worker.cc
@@ -100,7 +100,7 @@ static std::unique_ptr<Server> CreateServer(const ServerConfig& config) {
   abort();
 }
 
-class ScopedProfile GRPC_FINAL {
+class ScopedProfile final {
  public:
   ScopedProfile(const char* filename, bool enable) : enable_(enable) {
     if (enable_) grpc_profiler_start(filename);
@@ -113,14 +113,14 @@ class ScopedProfile GRPC_FINAL {
   const bool enable_;
 };
 
-class WorkerServiceImpl GRPC_FINAL : public WorkerService::Service {
+class WorkerServiceImpl final : public WorkerService::Service {
  public:
   WorkerServiceImpl(int server_port, QpsWorker* worker)
       : acquired_(false), server_port_(server_port), worker_(worker) {}
 
-  Status RunClient(ServerContext* ctx,
-                   ServerReaderWriter<ClientStatus, ClientArgs>* stream)
-      GRPC_OVERRIDE {
+  Status RunClient(
+      ServerContext* ctx,
+      ServerReaderWriter<ClientStatus, ClientArgs>* stream) override {
     InstanceGuard g(this);
     if (!g.Acquired()) {
       return Status(StatusCode::RESOURCE_EXHAUSTED, "Client worker busy");
@@ -132,9 +132,9 @@ class WorkerServiceImpl GRPC_FINAL : public WorkerService::Service {
     return ret;
   }
 
-  Status RunServer(ServerContext* ctx,
-                   ServerReaderWriter<ServerStatus, ServerArgs>* stream)
-      GRPC_OVERRIDE {
+  Status RunServer(
+      ServerContext* ctx,
+      ServerReaderWriter<ServerStatus, ServerArgs>* stream) override {
     InstanceGuard g(this);
     if (!g.Acquired()) {
       return Status(StatusCode::RESOURCE_EXHAUSTED, "Server worker busy");
@@ -147,12 +147,12 @@ class WorkerServiceImpl GRPC_FINAL : public WorkerService::Service {
   }
 
   Status CoreCount(ServerContext* ctx, const CoreRequest*,
-                   CoreResponse* resp) GRPC_OVERRIDE {
+                   CoreResponse* resp) override {
     resp->set_cores(gpr_cpu_num_cores());
     return Status::OK;
   }
 
-  Status QuitWorker(ServerContext* ctx, const Void*, Void*) GRPC_OVERRIDE {
+  Status QuitWorker(ServerContext* ctx, const Void*, Void*) override {
     InstanceGuard g(this);
     if (!g.Acquired()) {
       return Status(StatusCode::RESOURCE_EXHAUSTED, "Quitting worker busy");
diff --git a/test/cpp/qps/report.h b/test/cpp/qps/report.h
index 39cf498e7b..9dc259e95a 100644
--- a/test/cpp/qps/report.h
+++ b/test/cpp/qps/report.h
@@ -82,10 +82,10 @@ class CompositeReporter : public Reporter {
   /** Adds a \a reporter to the composite. */
   void add(std::unique_ptr<Reporter> reporter);
 
-  void ReportQPS(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportQPSPerCore(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportLatency(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportTimes(const ScenarioResult& result) GRPC_OVERRIDE;
+  void ReportQPS(const ScenarioResult& result) override;
+  void ReportQPSPerCore(const ScenarioResult& result) override;
+  void ReportLatency(const ScenarioResult& result) override;
+  void ReportTimes(const ScenarioResult& result) override;
 
  private:
   std::vector<std::unique_ptr<Reporter> > reporters_;
@@ -97,10 +97,10 @@ class GprLogReporter : public Reporter {
   GprLogReporter(const string& name) : Reporter(name) {}
 
  private:
-  void ReportQPS(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportQPSPerCore(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportLatency(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportTimes(const ScenarioResult& result) GRPC_OVERRIDE;
+  void ReportQPS(const ScenarioResult& result) override;
+  void ReportQPSPerCore(const ScenarioResult& result) override;
+  void ReportLatency(const ScenarioResult& result) override;
+  void ReportTimes(const ScenarioResult& result) override;
 };
 
 /** Dumps the report to a JSON file. */
@@ -110,10 +110,10 @@ class JsonReporter : public Reporter {
       : Reporter(name), report_file_(report_file) {}
 
  private:
-  void ReportQPS(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportQPSPerCore(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportLatency(const ScenarioResult& result) GRPC_OVERRIDE;
-  void ReportTimes(const ScenarioResult& result) GRPC_OVERRIDE;
+  void ReportQPS(const ScenarioResult& result) override;
+  void ReportQPSPerCore(const ScenarioResult& result) override;
+  void ReportLatency(const ScenarioResult& result) override;
+  void ReportTimes(const ScenarioResult& result) override;
 
   const string report_file_;
 };
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index 4fcdb4f083..b3a06aeaf5 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -58,7 +58,7 @@ namespace testing {
 
 template <class RequestType, class ResponseType, class ServiceType,
           class ServerContextType>
-class AsyncQpsServerTest GRPC_FINAL : public grpc::testing::Server {
+class AsyncQpsServerTest final : public grpc::testing::Server {
  public:
   AsyncQpsServerTest(
       const ServerConfig &config,
@@ -196,7 +196,7 @@ class AsyncQpsServerTest GRPC_FINAL : public grpc::testing::Server {
     return reinterpret_cast<ServerRpcContext *>(tag);
   }
 
-  class ServerRpcContextUnaryImpl GRPC_FINAL : public ServerRpcContext {
+  class ServerRpcContextUnaryImpl final : public ServerRpcContext {
    public:
     ServerRpcContextUnaryImpl(
         std::function<void(ServerContextType *, RequestType *,
@@ -213,11 +213,9 @@ class AsyncQpsServerTest GRPC_FINAL : public grpc::testing::Server {
       request_method_(srv_ctx_.get(), &req_, &response_writer_,
                       AsyncQpsServerTest::tag(this));
     }
-    ~ServerRpcContextUnaryImpl() GRPC_OVERRIDE {}
-    bool RunNextState(bool ok) GRPC_OVERRIDE {
-      return (this->*next_state_)(ok);
-    }
-    void Reset() GRPC_OVERRIDE {
+    ~ServerRpcContextUnaryImpl() override {}
+    bool RunNextState(bool ok) override { return (this->*next_state_)(ok); }
+    void Reset() override {
       srv_ctx_.reset(new ServerContextType);
       req_ = RequestType();
       response_writer_ =
@@ -257,7 +255,7 @@ class AsyncQpsServerTest GRPC_FINAL : public grpc::testing::Server {
     grpc::ServerAsyncResponseWriter<ResponseType> response_writer_;
   };
 
-  class ServerRpcContextStreamingImpl GRPC_FINAL : public ServerRpcContext {
+  class ServerRpcContextStreamingImpl final : public ServerRpcContext {
    public:
     ServerRpcContextStreamingImpl(
         std::function<void(
@@ -273,11 +271,9 @@ class AsyncQpsServerTest GRPC_FINAL : public grpc::testing::Server {
           stream_(srv_ctx_.get()) {
       request_method_(srv_ctx_.get(), &stream_, AsyncQpsServerTest::tag(this));
     }
-    ~ServerRpcContextStreamingImpl() GRPC_OVERRIDE {}
-    bool RunNextState(bool ok) GRPC_OVERRIDE {
-      return (this->*next_state_)(ok);
-    }
-    void Reset() GRPC_OVERRIDE {
+    ~ServerRpcContextStreamingImpl() override {}
+    bool RunNextState(bool ok) override { return (this->*next_state_)(ok); }
+    void Reset() override {
       srv_ctx_.reset(new ServerContextType);
       req_ = RequestType();
       stream_ = grpc::ServerAsyncReaderWriter<ResponseType, RequestType>(
diff --git a/test/cpp/qps/server_sync.cc b/test/cpp/qps/server_sync.cc
index 07f48e2644..8076a4a6b9 100644
--- a/test/cpp/qps/server_sync.cc
+++ b/test/cpp/qps/server_sync.cc
@@ -48,10 +48,10 @@
 namespace grpc {
 namespace testing {
 
-class BenchmarkServiceImpl GRPC_FINAL : public BenchmarkService::Service {
+class BenchmarkServiceImpl final : public BenchmarkService::Service {
  public:
   Status UnaryCall(ServerContext* context, const SimpleRequest* request,
-                   SimpleResponse* response) GRPC_OVERRIDE {
+                   SimpleResponse* response) override {
     if (request->response_size() > 0) {
       if (!Server::SetPayload(request->response_type(),
                               request->response_size(),
@@ -63,7 +63,7 @@ class BenchmarkServiceImpl GRPC_FINAL : public BenchmarkService::Service {
   }
   Status StreamingCall(
       ServerContext* context,
-      ServerReaderWriter<SimpleResponse, SimpleRequest>* stream) GRPC_OVERRIDE {
+      ServerReaderWriter<SimpleResponse, SimpleRequest>* stream) override {
     SimpleRequest request;
     while (stream->Read(&request)) {
       SimpleResponse response;
@@ -80,7 +80,7 @@ class BenchmarkServiceImpl GRPC_FINAL : public BenchmarkService::Service {
   }
 };
 
-class SynchronousServer GRPC_FINAL : public grpc::testing::Server {
+class SynchronousServer final : public grpc::testing::Server {
  public:
   explicit SynchronousServer(const ServerConfig& config) : Server(config) {
     ServerBuilder builder;
diff --git a/test/cpp/thread_manager/thread_manager_test.cc b/test/cpp/thread_manager/thread_manager_test.cc
index 5c70103947..284761c53a 100644
--- a/test/cpp/thread_manager/thread_manager_test.cc
+++ b/test/cpp/thread_manager/thread_manager_test.cc
@@ -43,7 +43,7 @@
 #include "test/cpp/util/test_config.h"
 
 namespace grpc {
-class ThreadManagerTest GRPC_FINAL : public grpc::ThreadManager {
+class ThreadManagerTest final : public grpc::ThreadManager {
  public:
   ThreadManagerTest()
       : ThreadManager(kMinPollers, kMaxPollers),
@@ -51,9 +51,8 @@ class ThreadManagerTest GRPC_FINAL : public grpc::ThreadManager {
         num_poll_for_work_(0),
         num_work_found_(0) {}
 
-  grpc::ThreadManager::WorkStatus PollForWork(void **tag,
-                                              bool *ok) GRPC_OVERRIDE;
-  void DoWork(void *tag, bool ok) GRPC_OVERRIDE;
+  grpc::ThreadManager::WorkStatus PollForWork(void **tag, bool *ok) override;
+  void DoWork(void *tag, bool ok) override;
   void PerformTest();
 
  private:
diff --git a/test/cpp/util/cli_call.h b/test/cpp/util/cli_call.h
index 2fbc9618b6..65da86bd4e 100644
--- a/test/cpp/util/cli_call.h
+++ b/test/cpp/util/cli_call.h
@@ -43,7 +43,7 @@
 namespace grpc {
 namespace testing {
 
-class CliCall GRPC_FINAL {
+class CliCall final {
  public:
   typedef std::multimap<grpc::string, grpc::string> OutgoingMetadataContainer;
   typedef std::multimap<grpc::string_ref, grpc::string_ref>
diff --git a/test/cpp/util/cli_call_test.cc b/test/cpp/util/cli_call_test.cc
index 75e90f824f..2e8501b2c3 100644
--- a/test/cpp/util/cli_call_test.cc
+++ b/test/cpp/util/cli_call_test.cc
@@ -56,7 +56,7 @@ namespace testing {
 class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
  public:
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     if (!context->client_metadata().empty()) {
       for (std::multimap<grpc::string_ref, grpc::string_ref>::const_iterator
                iter = context->client_metadata().begin();
@@ -75,7 +75,7 @@ class CliCallTest : public ::testing::Test {
  protected:
   CliCallTest() {}
 
-  void SetUp() GRPC_OVERRIDE {
+  void SetUp() override {
     int port = grpc_pick_unused_port_or_die();
     server_address_ << "localhost:" << port;
     // Setup server
@@ -86,7 +86,7 @@ class CliCallTest : public ::testing::Test {
     server_ = builder.BuildAndStart();
   }
 
-  void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
+  void TearDown() override { server_->Shutdown(); }
 
   void ResetStub() {
     channel_ =
diff --git a/test/cpp/util/grpc_tool_test.cc b/test/cpp/util/grpc_tool_test.cc
index bad1579f11..5ab054d04a 100644
--- a/test/cpp/util/grpc_tool_test.cc
+++ b/test/cpp/util/grpc_tool_test.cc
@@ -93,13 +93,12 @@ DECLARE_bool(l);
 
 namespace {
 
-class TestCliCredentials GRPC_FINAL : public grpc::testing::CliCredentials {
+class TestCliCredentials final : public grpc::testing::CliCredentials {
  public:
-  std::shared_ptr<grpc::ChannelCredentials> GetCredentials() const
-      GRPC_OVERRIDE {
+  std::shared_ptr<grpc::ChannelCredentials> GetCredentials() const override {
     return InsecureChannelCredentials();
   }
-  const grpc::string GetCredentialUsage() const GRPC_OVERRIDE { return ""; }
+  const grpc::string GetCredentialUsage() const override { return ""; }
 };
 
 bool PrintStream(std::stringstream* ss, const grpc::string& output) {
@@ -118,7 +117,7 @@ size_t ArraySize(T& a) {
 class TestServiceImpl : public ::grpc::testing::EchoTestService::Service {
  public:
   Status Echo(ServerContext* context, const EchoRequest* request,
-              EchoResponse* response) GRPC_OVERRIDE {
+              EchoResponse* response) override {
     if (!context->client_metadata().empty()) {
       for (std::multimap<grpc::string_ref, grpc::string_ref>::const_iterator
                iter = context->client_metadata().begin();
diff --git a/test/cpp/util/metrics_server.h b/test/cpp/util/metrics_server.h
index aa9bfed23d..4f1e393a63 100644
--- a/test/cpp/util/metrics_server.h
+++ b/test/cpp/util/metrics_server.h
@@ -83,13 +83,13 @@ class QpsGauge {
   std::mutex num_queries_mu_;
 };
 
-class MetricsServiceImpl GRPC_FINAL : public MetricsService::Service {
+class MetricsServiceImpl final : public MetricsService::Service {
  public:
   grpc::Status GetAllGauges(ServerContext* context, const EmptyMessage* request,
-                            ServerWriter<GaugeResponse>* writer) GRPC_OVERRIDE;
+                            ServerWriter<GaugeResponse>* writer) override;
 
   grpc::Status GetGauge(ServerContext* context, const GaugeRequest* request,
-                        GaugeResponse* response) GRPC_OVERRIDE;
+                        GaugeResponse* response) override;
 
   // Create a QpsGauge with name 'name'. is_present is set to true if the Gauge
   // is already present in the map.
diff --git a/test/cpp/util/proto_file_parser.cc b/test/cpp/util/proto_file_parser.cc
index 98dd3f14ad..3e524227e5 100644
--- a/test/cpp/util/proto_file_parser.cc
+++ b/test/cpp/util/proto_file_parser.cc
@@ -61,7 +61,7 @@ class ErrorPrinter : public protobuf::compiler::MultiFileErrorCollector {
   explicit ErrorPrinter(ProtoFileParser* parser) : parser_(parser) {}
 
   void AddError(const grpc::string& filename, int line, int column,
-                const grpc::string& message) GRPC_OVERRIDE {
+                const grpc::string& message) override {
     std::ostringstream oss;
     oss << "error " << filename << " " << line << " " << column << " "
         << message << "\n";
@@ -69,7 +69,7 @@ class ErrorPrinter : public protobuf::compiler::MultiFileErrorCollector {
   }
 
   void AddWarning(const grpc::string& filename, int line, int column,
-                  const grpc::string& message) GRPC_OVERRIDE {
+                  const grpc::string& message) override {
     std::cerr << "warning " << filename << " " << line << " " << column << " "
               << message << std::endl;
   }
diff --git a/test/cpp/util/proto_reflection_descriptor_database.h b/test/cpp/util/proto_reflection_descriptor_database.h
index dfa36044d9..259277ebbe 100644
--- a/test/cpp/util/proto_reflection_descriptor_database.h
+++ b/test/cpp/util/proto_reflection_descriptor_database.h
@@ -38,14 +38,9 @@
 #include <unordered_set>
 #include <vector>
 
-// GRPC_NO_GENERATED_CODE indicates generated pb files should not be used
-#ifdef GRPC_NO_GENERATED_CODE
-#include "src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.h"
-#else
-#include <grpc++/ext/reflection.grpc.pb.h>
-#endif  // GRPC_NO_GENERATED_CODE
 #include <grpc++/grpc++.h>
 #include <grpc++/impl/codegen/config_protobuf.h>
+#include "src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.h"
 
 namespace grpc {
 
@@ -67,14 +62,13 @@ class ProtoReflectionDescriptorDatabase : public protobuf::DescriptorDatabase {
   // Find a file by file name.  Fills in in *output and returns true if found.
   // Otherwise, returns false, leaving the contents of *output undefined.
   bool FindFileByName(const string& filename,
-                      protobuf::FileDescriptorProto* output) GRPC_OVERRIDE;
+                      protobuf::FileDescriptorProto* output) override;
 
   // Find the file that declares the given fully-qualified symbol name.
   // If found, fills in *output and returns true, otherwise returns false
   // and leaves *output undefined.
   bool FindFileContainingSymbol(const string& symbol_name,
-                                protobuf::FileDescriptorProto* output)
-      GRPC_OVERRIDE;
+                                protobuf::FileDescriptorProto* output) override;
 
   // Find the file which defines an extension extending the given message type
   // with the given field number.  If found, fills in *output and returns true,
@@ -82,7 +76,7 @@ class ProtoReflectionDescriptorDatabase : public protobuf::DescriptorDatabase {
   // must be a fully-qualified type name.
   bool FindFileContainingExtension(
       const string& containing_type, int field_number,
-      protobuf::FileDescriptorProto* output) GRPC_OVERRIDE;
+      protobuf::FileDescriptorProto* output) override;
 
   // Finds the tag numbers used by all known extensions of
   // extendee_type, and appends them to output in an undefined
@@ -92,7 +86,7 @@ class ProtoReflectionDescriptorDatabase : public protobuf::DescriptorDatabase {
   // numbers. Returns true if the search was successful, otherwise
   // returns false and leaves output unchanged.
   bool FindAllExtensionNumbers(const string& extendee_type,
-                               std::vector<int>* output) GRPC_OVERRIDE;
+                               std::vector<int>* output) override;
 
   // Provide a list of full names of registered services
   bool GetServices(std::vector<grpc::string>* output);
diff --git a/test/cpp/util/test_credentials_provider.cc b/test/cpp/util/test_credentials_provider.cc
index ca15f29795..0456b96667 100644
--- a/test/cpp/util/test_credentials_provider.cc
+++ b/test/cpp/util/test_credentials_provider.cc
@@ -34,9 +34,9 @@
 
 #include "test/cpp/util/test_credentials_provider.h"
 
+#include <mutex>
 #include <unordered_map>
 
-#include <grpc++/impl/sync.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
@@ -64,14 +64,14 @@ class CredentialsProvider {
 
 class DefaultCredentialsProvider : public CredentialsProvider {
  public:
-  ~DefaultCredentialsProvider() GRPC_OVERRIDE {}
+  ~DefaultCredentialsProvider() override {}
 
-  void AddSecureType(const grpc::string& type,
-                     std::unique_ptr<CredentialTypeProvider> type_provider)
-      GRPC_OVERRIDE {
+  void AddSecureType(
+      const grpc::string& type,
+      std::unique_ptr<CredentialTypeProvider> type_provider) override {
     // This clobbers any existing entry for type, except the defaults, which
     // can't be clobbered.
-    grpc::unique_lock<grpc::mutex> lock(mu_);
+    std::unique_lock<std::mutex> lock(mu_);
     auto it = std::find(added_secure_type_names_.begin(),
                         added_secure_type_names_.end(), type);
     if (it == added_secure_type_names_.end()) {
@@ -84,7 +84,7 @@ class DefaultCredentialsProvider : public CredentialsProvider {
   }
 
   std::shared_ptr<ChannelCredentials> GetChannelCredentials(
-      const grpc::string& type, ChannelArguments* args) GRPC_OVERRIDE {
+      const grpc::string& type, ChannelArguments* args) override {
     if (type == grpc::testing::kInsecureCredentialsType) {
       return InsecureChannelCredentials();
     } else if (type == grpc::testing::kTlsCredentialsType) {
@@ -92,7 +92,7 @@ class DefaultCredentialsProvider : public CredentialsProvider {
       args->SetSslTargetNameOverride("foo.test.google.fr");
       return SslCredentials(ssl_opts);
     } else {
-      grpc::unique_lock<grpc::mutex> lock(mu_);
+      std::unique_lock<std::mutex> lock(mu_);
       auto it(std::find(added_secure_type_names_.begin(),
                         added_secure_type_names_.end(), type));
       if (it == added_secure_type_names_.end()) {
@@ -105,7 +105,7 @@ class DefaultCredentialsProvider : public CredentialsProvider {
   }
 
   std::shared_ptr<ServerCredentials> GetServerCredentials(
-      const grpc::string& type) GRPC_OVERRIDE {
+      const grpc::string& type) override {
     if (type == grpc::testing::kInsecureCredentialsType) {
       return InsecureServerCredentials();
     } else if (type == grpc::testing::kTlsCredentialsType) {
@@ -116,7 +116,7 @@ class DefaultCredentialsProvider : public CredentialsProvider {
       ssl_opts.pem_key_cert_pairs.push_back(pkcp);
       return SslServerCredentials(ssl_opts);
     } else {
-      grpc::unique_lock<grpc::mutex> lock(mu_);
+      std::unique_lock<std::mutex> lock(mu_);
       auto it(std::find(added_secure_type_names_.begin(),
                         added_secure_type_names_.end(), type));
       if (it == added_secure_type_names_.end()) {
@@ -127,10 +127,10 @@ class DefaultCredentialsProvider : public CredentialsProvider {
           ->GetServerCredentials();
     }
   }
-  std::vector<grpc::string> GetSecureCredentialsTypeList() GRPC_OVERRIDE {
+  std::vector<grpc::string> GetSecureCredentialsTypeList() override {
     std::vector<grpc::string> types;
     types.push_back(grpc::testing::kTlsCredentialsType);
-    grpc::unique_lock<grpc::mutex> lock(mu_);
+    std::unique_lock<std::mutex> lock(mu_);
     for (auto it = added_secure_type_names_.begin();
          it != added_secure_type_names_.end(); it++) {
       types.push_back(*it);
@@ -139,7 +139,7 @@ class DefaultCredentialsProvider : public CredentialsProvider {
   }
 
  private:
-  grpc::mutex mu_;
+  std::mutex mu_;
   std::vector<grpc::string> added_secure_type_names_;
   std::vector<std::unique_ptr<CredentialTypeProvider>>
       added_secure_type_providers_;