Merge github.com:grpc/grpc into now-i-get-to-show-it-to-EVERYBODY

Conflicts:
	src/cpp/client/channel_arguments.cc

19 files changed, 811 insertions, 52 deletions

diff --git a/test/core/compression/message_compress_test.c b/test/core/compression/message_compress_test.c
index 4033c18131..f5f21cff25 100644
--- a/test/core/compression/message_compress_test.c
+++ b/test/core/compression/message_compress_test.c
@@ -61,13 +61,15 @@ static void assert_passthrough(gpr_slice value,
   gpr_slice_buffer output;
   gpr_slice final;
   int was_compressed;
+  char *algorithm_name;
 
+  GPR_ASSERT(grpc_compression_algorithm_name(algorithm, &algorithm_name) != 0);
   gpr_log(GPR_INFO,
           "assert_passthrough: value_length=%d value_hash=0x%08x "
           "algorithm='%s' uncompressed_split='%s' compressed_split='%s'",
           GPR_SLICE_LENGTH(value), gpr_murmur_hash3(GPR_SLICE_START_PTR(value),
                                                     GPR_SLICE_LENGTH(value), 0),
-          grpc_compression_algorithm_name(algorithm),
+          algorithm_name,
           grpc_slice_split_mode_name(uncompressed_split_mode),
           grpc_slice_split_mode_name(compressed_split_mode));
 
diff --git a/test/core/end2end/cq_verifier.c b/test/core/end2end/cq_verifier.c
index 81e158e969..c28932c52b 100644
--- a/test/core/end2end/cq_verifier.c
+++ b/test/core/end2end/cq_verifier.c
@@ -40,6 +40,7 @@
 #include "src/core/surface/event_string.h"
 #include "src/core/support/string.h"
 #include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
@@ -144,7 +145,17 @@ static int byte_buffer_eq_slice(grpc_byte_buffer *bb, gpr_slice b) {
 }
 
 int byte_buffer_eq_string(grpc_byte_buffer *bb, const char *str) {
-  return byte_buffer_eq_slice(bb, gpr_slice_from_copied_string(str));
+  grpc_byte_buffer_reader reader;
+  grpc_byte_buffer* rbb;
+  int res;
+
+  grpc_byte_buffer_reader_init(&reader, bb);
+  rbb = grpc_raw_byte_buffer_from_reader(&reader);
+  res = byte_buffer_eq_slice(rbb, gpr_slice_from_copied_string(str));
+  grpc_byte_buffer_reader_destroy(&reader);
+  grpc_byte_buffer_destroy(rbb);
+
+  return res;
 }
 
 static void verify_matches(expectation *e, grpc_event *ev) {
diff --git a/test/core/end2end/fixtures/chttp2_fullstack_compression.c b/test/core/end2end/fixtures/chttp2_fullstack_compression.c
new file mode 100644
index 0000000000..0a9a312296
--- /dev/null
+++ b/test/core/end2end/fixtures/chttp2_fullstack_compression.c
@@ -0,0 +1,135 @@
+/*
+ *
+ * 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 "src/core/channel/channel_args.h"
+#include "src/core/channel/client_channel.h"
+#include "src/core/channel/connected_channel.h"
+#include "src/core/channel/http_server_filter.h"
+#include "src/core/surface/channel.h"
+#include "src/core/surface/server.h"
+#include "src/core/transport/chttp2_transport.h"
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/useful.h>
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+typedef struct fullstack_compression_fixture_data {
+  char *localaddr;
+  grpc_channel_args* client_args_compression;
+  grpc_channel_args* server_args_compression;
+} fullstack_compression_fixture_data;
+
+static grpc_end2end_test_fixture chttp2_create_fixture_fullstack_compression(
+    grpc_channel_args *client_args, grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  int port = grpc_pick_unused_port_or_die();
+  fullstack_compression_fixture_data *ffd =
+      gpr_malloc(sizeof(fullstack_compression_fixture_data));
+  memset(ffd, 0, sizeof(fullstack_compression_fixture_data));
+
+  gpr_join_host_port(&ffd->localaddr, "localhost", port);
+
+  memset(&f, 0, sizeof(f));
+  f.fixture_data = ffd;
+  f.cq = grpc_completion_queue_create();
+
+  return f;
+}
+
+void chttp2_init_client_fullstack_compression(grpc_end2end_test_fixture *f,
+                                  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);
+  }
+  ffd->client_args_compression = grpc_channel_args_set_compression_algorithm(
+      client_args, GRPC_COMPRESS_GZIP);
+  f->client = grpc_channel_create(ffd->localaddr, ffd->client_args_compression);
+}
+
+void chttp2_init_server_fullstack_compression(grpc_end2end_test_fixture *f,
+                                  grpc_channel_args *server_args) {
+  fullstack_compression_fixture_data *ffd = f->fixture_data;
+  if (ffd->server_args_compression != NULL) {
+    grpc_channel_args_destroy(ffd->server_args_compression);
+  }
+  ffd->server_args_compression = grpc_channel_args_set_compression_algorithm(
+      server_args, GRPC_COMPRESS_GZIP);
+  if (f->server) {
+    grpc_server_destroy(f->server);
+  }
+  f->server = grpc_server_create(ffd->server_args_compression);
+  grpc_server_register_completion_queue(f->server, f->cq);
+  GPR_ASSERT(grpc_server_add_http2_port(f->server, ffd->localaddr));
+  grpc_server_start(f->server);
+}
+
+void chttp2_tear_down_fullstack_compression(grpc_end2end_test_fixture *f) {
+  fullstack_compression_fixture_data *ffd = f->fixture_data;
+  grpc_channel_args_destroy(ffd->client_args_compression);
+  grpc_channel_args_destroy(ffd->server_args_compression);
+  gpr_free(ffd->localaddr);
+  gpr_free(ffd);
+}
+
+/* All test configurations */
+static grpc_end2end_test_config configs[] = {
+    {"chttp2/fullstack_compression", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+     chttp2_create_fixture_fullstack_compression,
+     chttp2_init_client_fullstack_compression,
+     chttp2_init_server_fullstack_compression,
+     chttp2_tear_down_fullstack_compression},
+};
+
+int main(int argc, char **argv) {
+  size_t i;
+
+  grpc_test_init(argc, argv);
+  grpc_init();
+
+  for (i = 0; i < sizeof(configs) / sizeof(*configs); i++) {
+    grpc_end2end_tests(configs[i]);
+  }
+
+  grpc_shutdown();
+
+  return 0;
+}
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair.c b/test/core/end2end/fixtures/chttp2_socket_pair.c
index be523608d0..37b61cf37f 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair.c
@@ -36,6 +36,7 @@
 #include <string.h>
 
 #include "src/core/channel/client_channel.h"
+#include "src/core/channel/compress_filter.h"
 #include "src/core/channel/connected_channel.h"
 #include "src/core/channel/http_client_filter.h"
 #include "src/core/channel/http_server_filter.h"
@@ -75,6 +76,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
   sp_client_setup *cs = ts;
 
   const grpc_channel_filter *filters[] = {&grpc_http_client_filter,
+                                          &grpc_compress_filter,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c b/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
index f875ca54a5..2ec2697288 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
@@ -39,6 +39,7 @@
 #include "src/core/channel/connected_channel.h"
 #include "src/core/channel/http_client_filter.h"
 #include "src/core/channel/http_server_filter.h"
+#include "src/core/channel/compress_filter.h"
 #include "src/core/iomgr/endpoint_pair.h"
 #include "src/core/iomgr/iomgr.h"
 #include "src/core/surface/channel.h"
@@ -75,6 +76,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
   sp_client_setup *cs = ts;
 
   const grpc_channel_filter *filters[] = {&grpc_http_client_filter,
+                                          &grpc_compress_filter,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
index 52c0e2ca8b..3aa364c5e0 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
@@ -39,6 +39,7 @@
 #include "src/core/channel/connected_channel.h"
 #include "src/core/channel/http_client_filter.h"
 #include "src/core/channel/http_server_filter.h"
+#include "src/core/channel/compress_filter.h"
 #include "src/core/iomgr/endpoint_pair.h"
 #include "src/core/iomgr/iomgr.h"
 #include "src/core/support/env.h"
@@ -76,6 +77,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
   sp_client_setup *cs = ts;
 
   const grpc_channel_filter *filters[] = {&grpc_http_client_filter,
+                                          &grpc_compress_filter,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
diff --git a/test/core/end2end/gen_build_json.py b/test/core/end2end/gen_build_json.py
index f1c7e85e08..8b0dd3166b 100755
--- a/test/core/end2end/gen_build_json.py
+++ b/test/core/end2end/gen_build_json.py
@@ -44,6 +44,7 @@ default_secure_fixture_options = FixtureOptions(True, ['windows', 'posix'])
 END2END_FIXTURES = {
     'chttp2_fake_security': default_secure_fixture_options,
     'chttp2_fullstack': default_unsecure_fixture_options,
+    'chttp2_fullstack_compression': default_unsecure_fixture_options,
     'chttp2_fullstack_with_poll': FixtureOptions(False, ['posix']),
     'chttp2_fullstack_uds_posix': FixtureOptions(False, ['posix']),
     'chttp2_simple_ssl_fullstack': default_secure_fixture_options,
@@ -84,6 +85,7 @@ END2END_TESTS = {
     'request_response_with_payload_and_call_creds': TestOptions(flaky=False, secure=True),
     'request_with_large_metadata': default_test_options,
     'request_with_payload': default_test_options,
+    'request_with_compressed_payload': default_test_options,
     'request_with_flags': default_test_options,
     'server_finishes_request': default_test_options,
     'simple_delayed_request': default_test_options,
diff --git a/test/core/end2end/tests/request_with_compressed_payload.c b/test/core/end2end/tests/request_with_compressed_payload.c
new file mode 100644
index 0000000000..2599f796d2
--- /dev/null
+++ b/test/core/end2end/tests/request_with_compressed_payload.c
@@ -0,0 +1,315 @@
+/*
+ *
+ * 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 <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+
+#include "test/core/end2end/cq_verifier.h"
+#include "src/core/channel/channel_args.h"
+#include "src/core/channel/compress_filter.h"
+
+enum { TIMEOUT = 200000 };
+
+static void *tag(gpr_intptr 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) {
+  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);
+  config.init_server(&f, server_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time());
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+}
+
+static void request_with_payload_template(
+    grpc_end2end_test_config config, const char *test_name,
+    gpr_uint32 send_flags_bitmask,
+    grpc_compression_algorithm requested_compression_algorithm,
+    grpc_compression_algorithm expected_compression_algorithm,
+    grpc_metadata *client_metadata) {
+  grpc_call *c;
+  grpc_call *s;
+  gpr_slice request_payload_slice;
+  grpc_byte_buffer *request_payload;
+  gpr_timespec deadline = five_seconds_time();
+  grpc_channel_args *client_args;
+  grpc_channel_args *server_args;
+  grpc_end2end_test_fixture f;
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  char *details = NULL;
+  size_t details_capacity = 0;
+  int was_cancelled = 2;
+  cq_verifier *cqv;
+  char str[1024];
+
+  memset(str, 'x', 1023); str[1023] = '\0';
+  request_payload_slice = gpr_slice_from_copied_string(str);
+  request_payload = grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+
+  client_args = grpc_channel_args_set_compression_algorithm(
+      NULL, requested_compression_algorithm);
+  server_args = grpc_channel_args_set_compression_algorithm(
+      NULL, requested_compression_algorithm);
+
+  f = begin_test(config, test_name, client_args, server_args);
+  cqv = cq_verifier_create(f.cq);
+
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
+                               "foo.test.google.fr", deadline);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  if (client_metadata != NULL) {
+    op->data.send_initial_metadata.count = 1;
+    op->data.send_initial_metadata.metadata = client_metadata;
+  } else {
+    op->data.send_initial_metadata.count = 0;
+  }
+  op->flags = 0;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = request_payload;
+  op->flags = send_flags_bitmask;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op->flags = 0;
+  op++;
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
+
+  GPR_ASSERT(GRPC_CALL_OK ==
+             grpc_server_request_call(f.server, &s, &call_details,
+                                      &request_metadata_recv, f.cq,
+                                      f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
+
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &request_payload_recv;
+  op->flags = 0;
+  op++;
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
+
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
+
+  op = ops;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_OK;
+  op->data.send_status_from_server.status_details = "xyz";
+  op->flags = 0;
+  op++;
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
+
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
+
+  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"));
+  GPR_ASSERT(was_cancelled == 0);
+
+  GPR_ASSERT(request_payload_recv->type == GRPC_BB_RAW);
+  GPR_ASSERT(request_payload_recv->data.raw.compression ==
+             expected_compression_algorithm);
+
+  GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, str));
+
+  gpr_free(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(c);
+  grpc_call_destroy(s);
+
+  cq_verifier_destroy(cqv);
+
+  gpr_slice_unref(request_payload_slice);
+  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);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+static void test_invoke_request_with_exceptionally_uncompressed_payload(
+    grpc_end2end_test_config config) {
+  request_with_payload_template(
+      config, "test_invoke_request_with_exceptionally_uncompressed_payload",
+      GRPC_WRITE_NO_COMPRESS, GRPC_COMPRESS_GZIP, GRPC_COMPRESS_NONE,
+      NULL);
+}
+
+static void test_invoke_request_with_uncompressed_payload(
+    grpc_end2end_test_config config) {
+  request_with_payload_template(
+      config, "test_invoke_request_with_uncompressed_payload", 0,
+      GRPC_COMPRESS_NONE, GRPC_COMPRESS_NONE, NULL);
+}
+
+static void test_invoke_request_with_compressed_payload(
+    grpc_end2end_test_config config) {
+  request_with_payload_template(
+      config, "test_invoke_request_with_compressed_payload", 0,
+      GRPC_COMPRESS_GZIP, GRPC_COMPRESS_GZIP, NULL);
+}
+
+static void test_invoke_request_with_compressed_payload_md_override(
+    grpc_end2end_test_config config) {
+  grpc_metadata gzip_compression_override;
+  grpc_metadata none_compression_override;
+
+  gzip_compression_override.key = GRPC_COMPRESS_REQUEST_ALGORITHM_KEY;
+  gzip_compression_override.value = "gzip";
+  gzip_compression_override.value_length = 4;
+  memset(&gzip_compression_override.internal_data, 0,
+         sizeof(gzip_compression_override.internal_data));
+
+  none_compression_override.key = GRPC_COMPRESS_REQUEST_ALGORITHM_KEY;
+  none_compression_override.value = "none";
+  none_compression_override.value_length = 4;
+  memset(&none_compression_override.internal_data, 0,
+         sizeof(none_compression_override.internal_data));
+
+  /* Channel default NONE, call override to GZIP */
+  request_with_payload_template(
+      config, "test_invoke_request_with_compressed_payload_md_override_1", 0,
+      GRPC_COMPRESS_NONE, GRPC_COMPRESS_GZIP, &gzip_compression_override);
+
+  /* Channel default DEFLATE, call override to GZIP */
+  request_with_payload_template(
+      config, "test_invoke_request_with_compressed_payload_md_override_2", 0,
+      GRPC_COMPRESS_DEFLATE, GRPC_COMPRESS_GZIP, &gzip_compression_override);
+
+  /* Channel default DEFLATE, call override to NONE */
+  request_with_payload_template(
+      config, "test_invoke_request_with_compressed_payload_md_override_3", 0,
+      GRPC_COMPRESS_DEFLATE, GRPC_COMPRESS_NONE, &none_compression_override);
+}
+
+void grpc_end2end_tests(grpc_end2end_test_config config) {
+  test_invoke_request_with_exceptionally_uncompressed_payload(config);
+  test_invoke_request_with_uncompressed_payload(config);
+  test_invoke_request_with_compressed_payload(config);
+  test_invoke_request_with_compressed_payload_md_override(config);
+}
diff --git a/test/core/security/fetch_oauth2.c b/test/core/security/fetch_oauth2.c
index e4d422ccc2..64c4dde5d9 100644
--- a/test/core/security/fetch_oauth2.c
+++ b/test/core/security/fetch_oauth2.c
@@ -44,35 +44,7 @@
 
 #include "src/core/security/credentials.h"
 #include "src/core/support/file.h"
-
-typedef struct {
-  grpc_pollset pollset;
-  int is_done;
-} synchronizer;
-
-static void on_oauth2_response(void *user_data,
-                               grpc_credentials_md *md_elems,
-                               size_t num_md, grpc_credentials_status status) {
-  synchronizer *sync = user_data;
-  char *token;
-  gpr_slice token_slice;
-  if (status == GRPC_CREDENTIALS_ERROR) {
-    gpr_log(GPR_ERROR, "Fetching token failed.");
-  } else {
-    GPR_ASSERT(num_md == 1);
-    token_slice = md_elems[0].value;
-    token = gpr_malloc(GPR_SLICE_LENGTH(token_slice) + 1);
-    memcpy(token, GPR_SLICE_START_PTR(token_slice),
-           GPR_SLICE_LENGTH(token_slice));
-    token[GPR_SLICE_LENGTH(token_slice)] = '\0';
-    printf("Got token: %s.\n", token);
-    gpr_free(token);
-  }
-  gpr_mu_lock(GRPC_POLLSET_MU(&sync->pollset));
-  sync->is_done = 1;
-  grpc_pollset_kick(&sync->pollset);
-  gpr_mu_unlock(GRPC_POLLSET_MU(&sync->pollset));
-}
+#include "test/core/security/oauth2_utils.h"
 
 static grpc_credentials *create_service_account_creds(
     const char *json_key_file_path, const char *scope) {
@@ -101,10 +73,10 @@ static grpc_credentials *create_refresh_token_creds(
 }
 
 int main(int argc, char **argv) {
-  synchronizer sync;
   grpc_credentials *creds = NULL;
   char *json_key_file_path = NULL;
   char *json_refresh_token_file_path = NULL;
+  char *token = NULL;
   int use_gce = 0;
   char *scope = NULL;
   gpr_cmdline *cl = gpr_cmdline_create("fetch_oauth2");
@@ -175,17 +147,11 @@ int main(int argc, char **argv) {
   }
   GPR_ASSERT(creds != NULL);
 
-  grpc_pollset_init(&sync.pollset);
-  sync.is_done = 0;
-
-  grpc_credentials_get_request_metadata(creds, &sync.pollset, "", on_oauth2_response, &sync);
-
-  gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
-  while (!sync.is_done)
-    grpc_pollset_work(&sync.pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
-  gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
-
-  grpc_pollset_destroy(&sync.pollset);
+  token = grpc_test_fetch_oauth2_token_with_credentials(creds);
+  if (token != NULL) {
+    printf("Got token: %s.\n", token);
+    gpr_free(token);
+  }
   grpc_credentials_release(creds);
   gpr_cmdline_destroy(cl);
   grpc_shutdown();
diff --git a/test/core/security/oauth2_utils.c b/test/core/security/oauth2_utils.c
new file mode 100644
index 0000000000..ecd04fd9e1
--- /dev/null
+++ b/test/core/security/oauth2_utils.c
@@ -0,0 +1,93 @@
+/*
+ *
+ * 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/security/oauth2_utils.h"
+
+#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/slice.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/security/credentials.h"
+
+typedef struct {
+  grpc_pollset pollset;
+  int is_done;
+  char *token;
+} oauth2_request;
+
+static void on_oauth2_response(void *user_data, grpc_credentials_md *md_elems,
+                               size_t num_md, grpc_credentials_status status) {
+  oauth2_request *request = user_data;
+  char *token = NULL;
+  gpr_slice token_slice;
+  if (status == GRPC_CREDENTIALS_ERROR) {
+    gpr_log(GPR_ERROR, "Fetching token failed.");
+  } else {
+    GPR_ASSERT(num_md == 1);
+    token_slice = md_elems[0].value;
+    token = gpr_malloc(GPR_SLICE_LENGTH(token_slice) + 1);
+    memcpy(token, GPR_SLICE_START_PTR(token_slice),
+           GPR_SLICE_LENGTH(token_slice));
+    token[GPR_SLICE_LENGTH(token_slice)] = '\0';
+  }
+  gpr_mu_lock(GRPC_POLLSET_MU(&request->pollset));
+  request->is_done = 1;
+  request->token = token;
+  grpc_pollset_kick(&request->pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&request->pollset));
+}
+
+static void do_nothing(void *unused) {}
+
+char *grpc_test_fetch_oauth2_token_with_credentials(grpc_credentials *creds) {
+  oauth2_request request;
+  grpc_pollset_init(&request.pollset);
+  request.is_done = 0;
+
+  grpc_credentials_get_request_metadata(creds, &request.pollset, "",
+                                        on_oauth2_response, &request);
+
+  gpr_mu_lock(GRPC_POLLSET_MU(&request.pollset));
+  while (!request.is_done)
+    grpc_pollset_work(&request.pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
+  gpr_mu_unlock(GRPC_POLLSET_MU(&request.pollset));
+
+  grpc_pollset_shutdown(&request.pollset, do_nothing, NULL);
+  grpc_pollset_destroy(&request.pollset);
+  return request.token;
+}
diff --git a/test/core/security/oauth2_utils.h b/test/core/security/oauth2_utils.h
new file mode 100644
index 0000000000..8082351b8a
--- /dev/null
+++ b/test/core/security/oauth2_utils.h
@@ -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.
+ *
+ */
+
+#ifndef GRPC_TEST_CORE_SECURITY_OAUTH2_UTILS_H
+#define GRPC_TEST_CORE_SECURITY_OAUTH2_UTILS_H
+
+#include "src/core/security/credentials.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Fetch oauth2 access token with a credentials object. Does not take ownership.
+   Returns NULL on a failure. The caller should call gpr_free on the token. */
+char *grpc_test_fetch_oauth2_token_with_credentials(grpc_credentials *creds);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_TEST_CORE_SECURITY_OAUTH2_UTILS_H */
diff --git a/test/core/support/string_test.c b/test/core/support/string_test.c
index f04e72ac2b..9023d0746b 100644
--- a/test/core/support/string_test.c
+++ b/test/core/support/string_test.c
@@ -173,6 +173,119 @@ static void test_asprintf(void) {
   }
 }
 
+static void test_strjoin(void) {
+  const char *parts[4] = {"one", "two", "three", "four"};
+  size_t joined_len;
+  char *joined;
+
+  LOG_TEST_NAME("test_strjoin");
+
+  joined = gpr_strjoin(parts, 4, &joined_len);
+  GPR_ASSERT(0 == strcmp("onetwothreefour", joined));
+  gpr_free(joined);
+
+  joined = gpr_strjoin(parts, 0, &joined_len);
+  GPR_ASSERT(0 == strcmp("", joined));
+  gpr_free(joined);
+
+  joined = gpr_strjoin(parts, 1, &joined_len);
+  GPR_ASSERT(0 == strcmp("one", joined));
+  gpr_free(joined);
+}
+
+static void test_strjoin_sep(void) {
+  const char *parts[4] = {"one", "two", "three", "four"};
+  size_t joined_len;
+  char *joined;
+
+  LOG_TEST_NAME("test_strjoin_sep");
+
+  joined = gpr_strjoin_sep(parts, 4, ", ", &joined_len);
+  GPR_ASSERT(0 == strcmp("one, two, three, four", joined));
+  gpr_free(joined);
+
+  /* empty separator */
+  joined = gpr_strjoin_sep(parts, 4, "", &joined_len);
+  GPR_ASSERT(0 == strcmp("onetwothreefour", joined));
+  gpr_free(joined);
+
+  /* degenerated case specifying zero input parts */
+  joined = gpr_strjoin_sep(parts, 0, ", ", &joined_len);
+  GPR_ASSERT(0 == strcmp("", joined));
+  gpr_free(joined);
+
+  /* single part should have no separator */
+  joined = gpr_strjoin_sep(parts, 1, ", ", &joined_len);
+  GPR_ASSERT(0 == strcmp("one", joined));
+  gpr_free(joined);
+}
+
+static void test_strsplit(void) {
+  gpr_slice_buffer* parts;
+  gpr_slice str;
+
+  LOG_TEST_NAME("test_strsplit");
+
+  parts = gpr_malloc(sizeof(gpr_slice_buffer));
+  gpr_slice_buffer_init(parts);
+
+  str = gpr_slice_from_copied_string("one, two, three, four");
+  gpr_slice_split(str, ", ", parts);
+  GPR_ASSERT(4 == parts->count);
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[0], "one"));
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[1], "two"));
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[2], "three"));
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[3], "four"));
+  gpr_slice_buffer_reset_and_unref(parts);
+  gpr_slice_unref(str);
+
+  /* separator not present in string */
+  str = gpr_slice_from_copied_string("one two three four");
+  gpr_slice_split(str, ", ", parts);
+  GPR_ASSERT(1 == parts->count);
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[0], "one two three four"));
+  gpr_slice_buffer_reset_and_unref(parts);
+  gpr_slice_unref(str);
+
+  /* separator at the end */
+  str = gpr_slice_from_copied_string("foo,");
+  gpr_slice_split(str, ",", parts);
+  GPR_ASSERT(2 == parts->count);
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[0], "foo"));
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[1], ""));
+  gpr_slice_buffer_reset_and_unref(parts);
+  gpr_slice_unref(str);
+
+  /* separator at the beginning */
+  str = gpr_slice_from_copied_string(",foo");
+  gpr_slice_split(str, ",", parts);
+  GPR_ASSERT(2 == parts->count);
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[0], ""));
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[1], "foo"));
+  gpr_slice_buffer_reset_and_unref(parts);
+  gpr_slice_unref(str);
+
+  /* standalone separator */
+  str = gpr_slice_from_copied_string(",");
+  gpr_slice_split(str, ",", parts);
+  GPR_ASSERT(2 == parts->count);
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[0], ""));
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[1], ""));
+  gpr_slice_buffer_reset_and_unref(parts);
+  gpr_slice_unref(str);
+
+  /* empty input */
+  str = gpr_slice_from_copied_string("");
+  gpr_slice_split(str, ", ", parts);
+  GPR_ASSERT(1 == parts->count);
+  GPR_ASSERT(0 == gpr_slice_str_cmp(parts->slices[0], ""));
+  gpr_slice_buffer_reset_and_unref(parts);
+  gpr_slice_unref(str);
+
+  gpr_slice_buffer_destroy(parts);
+  gpr_free(parts);
+}
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   test_strdup();
@@ -180,5 +293,8 @@ int main(int argc, char **argv) {
   test_dump_slice();
   test_parse_uint32();
   test_asprintf();
+  test_strjoin();
+  test_strjoin_sep();
+  test_strsplit();
   return 0;
 }
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 00088cfb15..4305d57b1f 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -270,10 +270,11 @@ static void SendRpc(grpc::cpp::test::util::TestService::Stub* stub,
                     int num_rpcs) {
   EchoRequest request;
   EchoResponse response;
-  request.set_message("Hello");
+  request.set_message("Hello hello hello hello");
 
   for (int i = 0; i < num_rpcs; ++i) {
     ClientContext context;
+    context._experimental_set_compression_algorithm(GRPC_COMPRESS_GZIP);
     Status s = stub->Echo(&context, request, &response);
     EXPECT_EQ(response.message(), request.message());
     EXPECT_TRUE(s.ok());
diff --git a/test/cpp/end2end/generic_end2end_test.cc b/test/cpp/end2end/generic_end2end_test.cc
index b9d47b32de..8fe0d6886a 100644
--- a/test/cpp/end2end/generic_end2end_test.cc
+++ b/test/cpp/end2end/generic_end2end_test.cc
@@ -227,6 +227,7 @@ TEST_F(GenericEnd2endTest, SimpleBidiStreaming) {
   GenericServerContext srv_ctx;
   GenericServerAsyncReaderWriter srv_stream(&srv_ctx);
 
+  cli_ctx._experimental_set_compression_algorithm(GRPC_COMPRESS_GZIP);
   send_request.set_message("Hello");
   std::unique_ptr<GenericClientAsyncReaderWriter> cli_stream =
       generic_stub_->Call(&cli_ctx, kMethodName, &cli_cq_, tag(1));
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 96149c5e75..1f1e6c1306 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -68,6 +68,7 @@ DEFINE_string(test_case, "large_unary",
               "service_account_creds : large_unary with service_account auth; "
               "compute_engine_creds: large_unary with compute engine auth; "
               "jwt_token_creds: large_unary with JWT token auth; "
+              "oauth2_auth_token: raw oauth2 access token auth; "
               "all : all of above.");
 DEFINE_string(default_service_account, "",
               "Email of GCE default service account");
@@ -113,6 +114,9 @@ int main(int argc, char** argv) {
   } else if (FLAGS_test_case == "jwt_token_creds") {
     grpc::string json_key = GetServiceAccountJsonKey();
     client.DoJwtTokenCreds(json_key);
+  } else if (FLAGS_test_case == "oauth2_auth_token") {
+    grpc::string json_key = GetServiceAccountJsonKey();
+    client.DoOauth2AuthToken(json_key, FLAGS_oauth_scope);
   } else if (FLAGS_test_case == "all") {
     client.DoEmpty();
     client.DoLargeUnary();
@@ -128,6 +132,7 @@ int main(int argc, char** argv) {
       grpc::string json_key = GetServiceAccountJsonKey();
       client.DoServiceAccountCreds(json_key, FLAGS_oauth_scope);
       client.DoJwtTokenCreds(json_key);
+      client.DoOauth2AuthToken(json_key, FLAGS_oauth_scope);
     }
     // compute_engine_creds only runs in GCE.
   } else {
@@ -136,8 +141,8 @@ int main(int argc, char** argv) {
         "Unsupported test case %s. Valid options are all|empty_unary|"
         "large_unary|client_streaming|server_streaming|half_duplex|ping_pong|"
         "cancel_after_begin|cancel_after_first_response|"
-        "timeout_on_sleeping_server|"
-        "service_account_creds|compute_engine_creds|jwt_token_creds",
+        "timeout_on_sleeping_server|service_account_creds|compute_engine_creds|"
+        "jwt_token_creds|oauth2_auth_token",
         FLAGS_test_case.c_str());
     ret = 1;
   }
diff --git a/test/cpp/interop/client_helper.cc b/test/cpp/interop/client_helper.cc
index 09fd1c8913..48b1b2e864 100644
--- a/test/cpp/interop/client_helper.cc
+++ b/test/cpp/interop/client_helper.cc
@@ -40,6 +40,7 @@
 #include <unistd.h>
 
 #include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <gflags/gflags.h>
 #include <grpc++/channel_arguments.h>
@@ -47,6 +48,8 @@
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
 #include <grpc++/stream.h>
+#include "src/cpp/client/secure_credentials.h"
+#include "test/core/security/oauth2_utils.h"
 #include "test/cpp/util/create_test_channel.h"
 
 DECLARE_bool(enable_ssl);
@@ -62,6 +65,16 @@ DECLARE_string(oauth_scope);
 namespace grpc {
 namespace testing {
 
+namespace {
+std::shared_ptr<Credentials> CreateServiceAccountCredentials() {
+  GPR_ASSERT(FLAGS_enable_ssl);
+  grpc::string json_key = GetServiceAccountJsonKey();
+  std::chrono::seconds token_lifetime = std::chrono::hours(1);
+  return ServiceAccountCredentials(json_key, FLAGS_oauth_scope,
+                                   token_lifetime.count());
+}
+}  // namespace
+
 grpc::string GetServiceAccountJsonKey() {
   static grpc::string json_key;
   if (json_key.empty()) {
@@ -73,6 +86,20 @@ grpc::string GetServiceAccountJsonKey() {
   return json_key;
 }
 
+grpc::string GetOauth2AccessToken() {
+  std::shared_ptr<Credentials> creds = CreateServiceAccountCredentials();
+  SecureCredentials* secure_creds =
+      dynamic_cast<SecureCredentials*>(creds.get());
+  GPR_ASSERT(secure_creds != nullptr);
+  grpc_credentials* c_creds = secure_creds->GetRawCreds();
+  char* token = grpc_test_fetch_oauth2_token_with_credentials(c_creds);
+  GPR_ASSERT(token != nullptr);
+  gpr_log(GPR_INFO, "Get raw oauth2 access token: %s", token);
+  grpc::string access_token(token + sizeof("Bearer ") - 1);
+  gpr_free(token);
+  return access_token;
+}
+
 std::shared_ptr<ChannelInterface> CreateChannelForTestCase(
     const grpc::string& test_case) {
   GPR_ASSERT(FLAGS_server_port);
@@ -82,12 +109,7 @@ std::shared_ptr<ChannelInterface> CreateChannelForTestCase(
            FLAGS_server_port);
 
   if (test_case == "service_account_creds") {
-    std::shared_ptr<Credentials> creds;
-    GPR_ASSERT(FLAGS_enable_ssl);
-    grpc::string json_key = GetServiceAccountJsonKey();
-    std::chrono::seconds token_lifetime = std::chrono::hours(1);
-    creds = ServiceAccountCredentials(json_key, FLAGS_oauth_scope,
-                                      token_lifetime.count());
+    std::shared_ptr<Credentials> creds = CreateServiceAccountCredentials();
     return CreateTestChannel(host_port, FLAGS_server_host_override,
                              FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
   } else if (test_case == "compute_engine_creds") {
@@ -104,6 +126,11 @@ std::shared_ptr<ChannelInterface> CreateChannelForTestCase(
     creds = JWTCredentials(json_key, token_lifetime.count());
     return CreateTestChannel(host_port, FLAGS_server_host_override,
                              FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
+  } else if (test_case == "oauth2_auth_token") {
+    grpc::string raw_token = GetOauth2AccessToken();
+    std::shared_ptr<Credentials> creds = AccessTokenCredentials(raw_token);
+    return CreateTestChannel(host_port, FLAGS_server_host_override,
+                             FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
   } else {
     return CreateTestChannel(host_port, FLAGS_server_host_override,
                              FLAGS_enable_ssl, FLAGS_use_prod_roots);
diff --git a/test/cpp/interop/client_helper.h b/test/cpp/interop/client_helper.h
index 897f974026..c4361bb9de 100644
--- a/test/cpp/interop/client_helper.h
+++ b/test/cpp/interop/client_helper.h
@@ -44,6 +44,8 @@ namespace testing {
 
 grpc::string GetServiceAccountJsonKey();
 
+grpc::string GetOauth2AccessToken();
+
 std::shared_ptr<ChannelInterface> CreateChannelForTestCase(
     const grpc::string& test_case);
 
diff --git a/test/cpp/interop/interop_client.cc b/test/cpp/interop/interop_client.cc
index d88eff759c..4dcd8ad061 100644
--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@@ -143,6 +143,29 @@ void InteropClient::DoServiceAccountCreds(const grpc::string& username,
   gpr_log(GPR_INFO, "Large unary with service account creds done.");
 }
 
+void InteropClient::DoOauth2AuthToken(const grpc::string& username,
+                                      const grpc::string& oauth_scope) {
+  gpr_log(GPR_INFO,
+          "Sending a unary rpc with raw oauth2 access token credentials ...");
+  SimpleRequest request;
+  SimpleResponse response;
+  request.set_fill_username(true);
+  request.set_fill_oauth_scope(true);
+  std::unique_ptr<TestService::Stub> stub(TestService::NewStub(channel_));
+
+  ClientContext context;
+
+  Status s = stub->UnaryCall(&context, request, &response);
+
+  AssertOkOrPrintErrorStatus(s);
+  GPR_ASSERT(!response.username().empty());
+  GPR_ASSERT(!response.oauth_scope().empty());
+  GPR_ASSERT(username.find(response.username()) != grpc::string::npos);
+  const char* oauth_scope_str = response.oauth_scope().c_str();
+  GPR_ASSERT(oauth_scope.find(oauth_scope_str) != grpc::string::npos);
+  gpr_log(GPR_INFO, "Unary with oauth2 access token credentials done.");
+}
+
 void InteropClient::DoJwtTokenCreds(const grpc::string& username) {
   gpr_log(GPR_INFO, "Sending a large unary rpc with JWT token credentials ...");
   SimpleRequest request;
diff --git a/test/cpp/interop/interop_client.h b/test/cpp/interop/interop_client.h
index d02e583d94..67eecd9ccc 100644
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@@ -68,6 +68,9 @@ class InteropClient {
   // username is a string containing the user email
   void DoServiceAccountCreds(const grpc::string& username,
                              const grpc::string& oauth_scope);
+  // username is a string containing the user email
+  void DoOauth2AuthToken(const grpc::string& username,
+                         const grpc::string& oauth_scope);
 
  private:
   void PerformLargeUnary(SimpleRequest* request, SimpleResponse* response);