Merge github.com:grpc/grpc into warbling-wombat

23 files changed, 135 insertions, 71 deletions

diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index eca2a40c97..60129afc43 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -37,6 +37,8 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
 #include "test/core/util/test_config.h"
 
 static void channel_init_func(grpc_channel_element *elem, grpc_channel *master,
@@ -73,11 +75,14 @@ static void channel_func(grpc_channel_element *elem, grpc_transport_op *op) {
   ++*(int *)(elem->channel_data);
 }
 
+static char *get_peer(grpc_call_element *elem) { return gpr_strdup("peer"); }
+
 static void test_create_channel_stack(void) {
-  const grpc_channel_filter filter = {
-      call_func,         channel_func,         sizeof(int),
-      call_init_func,    call_destroy_func,    sizeof(int),
-      channel_init_func, channel_destroy_func, "some_test_filter"};
+  const grpc_channel_filter filter = {call_func,         channel_func,
+                                      sizeof(int),       call_init_func,
+                                      call_destroy_func, sizeof(int),
+                                      channel_init_func, channel_destroy_func,
+                                      get_peer,          "some_test_filter"};
   const grpc_channel_filter *filters = &filter;
   grpc_channel_stack *channel_stack;
   grpc_call_stack *call_stack;
diff --git a/test/core/end2end/dualstack_socket_test.c b/test/core/end2end/dualstack_socket_test.c
index 7d3568c22e..453376caec 100644
--- a/test/core/end2end/dualstack_socket_test.c
+++ b/test/core/end2end/dualstack_socket_test.c
@@ -37,6 +37,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
@@ -78,6 +79,7 @@ void test_connect(const char *server_host, const char *client_host, int port,
   size_t details_capacity = 0;
   int was_cancelled = 2;
   grpc_call_details call_details;
+  char *peer;
 
   if (port == 0) {
     port = grpc_pick_unused_port_or_die();
@@ -105,7 +107,12 @@ void test_connect(const char *server_host, const char *client_host, int port,
   cqv = cq_verifier_create(cq);
 
   /* Create client. */
-  gpr_join_host_port(&client_hostport, client_host, port);
+  if (client_host[0] == 'i') {
+    /* for ipv4:/ipv6: addresses, just concatenate the port */
+    gpr_asprintf(&client_hostport, "%s:%d", client_host, port);
+  } else {
+    gpr_join_host_port(&client_hostport, client_host, port);
+  }
   client = grpc_channel_create(client_hostport, NULL);
 
   gpr_log(GPR_INFO, "Testing with server=%s client=%s (expecting %s)",
@@ -179,6 +186,10 @@ void test_connect(const char *server_host, const char *client_host, int port,
     cq_expect_completion(cqv, tag(1), 1);
     cq_verify(cqv);
 
+    peer = grpc_call_get_peer(c);
+    gpr_log(GPR_DEBUG, "got peer: '%s'", peer);
+    gpr_free(peer);
+
     GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
     GPR_ASSERT(0 == strcmp(details, "xyz"));
     GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
@@ -211,6 +222,10 @@ void test_connect(const char *server_host, const char *client_host, int port,
   drain_cq(cq);
   grpc_completion_queue_destroy(cq);
 
+  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);
   gpr_free(details);
 }
@@ -233,21 +248,31 @@ int main(int argc, char **argv) {
     /* :: and 0.0.0.0 are handled identically. */
     test_connect("::", "127.0.0.1", 0, 1);
     test_connect("::", "::ffff:127.0.0.1", 0, 1);
+    test_connect("::", "ipv4:127.0.0.1", 0, 1);
+    test_connect("::", "ipv6:[::ffff:127.0.0.1]", 0, 1);
     test_connect("::", "localhost", 0, 1);
     test_connect("0.0.0.0", "127.0.0.1", 0, 1);
     test_connect("0.0.0.0", "::ffff:127.0.0.1", 0, 1);
+    test_connect("0.0.0.0", "ipv4:127.0.0.1", 0, 1);
+    test_connect("0.0.0.0", "ipv6:[::ffff:127.0.0.1]", 0, 1);
     test_connect("0.0.0.0", "localhost", 0, 1);
     if (do_ipv6) {
       test_connect("::", "::1", 0, 1);
       test_connect("0.0.0.0", "::1", 0, 1);
+      test_connect("::", "ipv6:[::1]", 0, 1);
+      test_connect("0.0.0.0", "ipv6:[::1]", 0, 1);
     }
 
     /* These only work when the families agree. */
     test_connect("127.0.0.1", "127.0.0.1", 0, 1);
+    test_connect("127.0.0.1", "ipv4:127.0.0.1", 0, 1);
     if (do_ipv6) {
       test_connect("::1", "::1", 0, 1);
       test_connect("::1", "127.0.0.1", 0, 0);
       test_connect("127.0.0.1", "::1", 0, 0);
+      test_connect("::1", "ipv6:[::1]", 0, 1);
+      test_connect("::1", "ipv4:127.0.0.1", 0, 0);
+      test_connect("127.0.0.1", "ipv6:[::1]", 0, 0);
     }
   }
 
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair.c b/test/core/end2end/fixtures/chttp2_socket_pair.c
index 37b61cf37f..807fc8e7bc 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair.c
@@ -80,7 +80,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
-      filters, nfilters, cs->client_args, mdctx, 1);
+      "socketpair-target", filters, nfilters, cs->client_args, mdctx, 1);
 
   cs->f->client = channel;
 
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 2ec2697288..21d4404237 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
@@ -80,7 +80,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
-      filters, nfilters, cs->client_args, mdctx, 1);
+      "socketpair-target", filters, nfilters, cs->client_args, mdctx, 1);
 
   cs->f->client = channel;
 
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 3aa364c5e0..c59628b959 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
@@ -81,7 +81,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
-      filters, nfilters, cs->client_args, mdctx, 1);
+      "socketpair-target", filters, nfilters, cs->client_args, mdctx, 1);
 
   cs->f->client = channel;
 
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index 6194b841d8..ca783afccd 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -114,11 +114,17 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   char *details = NULL;
   size_t details_capacity = 0;
   int was_cancelled = 2;
+  char *peer;
 
   c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
+  peer = grpc_call_get_peer(c);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "client_peer_before_call=%s", peer);
+  gpr_free(peer);
+
   grpc_metadata_array_init(&initial_metadata_recv);
   grpc_metadata_array_init(&trailing_metadata_recv);
   grpc_metadata_array_init(&request_metadata_recv);
@@ -151,6 +157,15 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   cq_expect_completion(cqv, tag(101), 1);
   cq_verify(cqv);
 
+  peer = grpc_call_get_peer(s);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "server_peer=%s", peer);
+  gpr_free(peer);
+  peer = grpc_call_get_peer(c);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "client_peer=%s", peer);
+  gpr_free(peer);
+
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
diff --git a/test/core/iomgr/alarm_test.c b/test/core/iomgr/alarm_test.c
index 362eb5fe63..55aa517529 100644
--- a/test/core/iomgr/alarm_test.c
+++ b/test/core/iomgr/alarm_test.c
@@ -41,6 +41,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
@@ -100,7 +101,7 @@ static void test_grpc_alarm(void) {
   alarm_arg arg2;
   void *fdone;
 
-  grpc_iomgr_init();
+  grpc_init();
 
   arg.counter = 0;
   arg.success = SUCCESS_NOT_SET;
@@ -113,7 +114,7 @@ static void test_grpc_alarm(void) {
   gpr_event_init(&arg.fcb_arg);
 
   grpc_alarm_init(&alarm, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(100), alarm_cb, &arg,
-                  gpr_now(GPR_CLOCK_REALTIME));
+                  gpr_now(GPR_CLOCK_MONOTONIC));
 
   alarm_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1);
   gpr_mu_lock(&arg.mu);
@@ -165,7 +166,7 @@ static void test_grpc_alarm(void) {
   gpr_event_init(&arg2.fcb_arg);
 
   grpc_alarm_init(&alarm_to_cancel, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(100),
-                  alarm_cb, &arg2, gpr_now(GPR_CLOCK_REALTIME));
+                  alarm_cb, &arg2, gpr_now(GPR_CLOCK_MONOTONIC));
   grpc_alarm_cancel(&alarm_to_cancel);
 
   alarm_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1);
@@ -214,7 +215,7 @@ static void test_grpc_alarm(void) {
   gpr_mu_destroy(&arg2.mu);
   gpr_free(arg2.followup_closure);
 
-  grpc_iomgr_shutdown();
+  grpc_shutdown();
 }
 
 int main(int argc, char **argv) {
diff --git a/test/core/iomgr/endpoint_tests.c b/test/core/iomgr/endpoint_tests.c
index 0cfba5fac8..cb6adc58cf 100644
--- a/test/core/iomgr/endpoint_tests.c
+++ b/test/core/iomgr/endpoint_tests.c
@@ -254,7 +254,7 @@ static void read_and_write_test(grpc_endpoint_test_config config,
 
   gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
   while (!state.read_done || !state.write_done) {
-    GPR_ASSERT(gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
+    GPR_ASSERT(gpr_time_cmp(gpr_now(GPR_CLOCK_MONOTONIC), deadline) < 0);
     grpc_pollset_work(g_pollset, deadline);
   }
   gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
@@ -350,14 +350,14 @@ static void shutdown_during_write_test(grpc_endpoint_test_config config,
         deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
         gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
         while (!write_st.done) {
-          GPR_ASSERT(gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
+          GPR_ASSERT(gpr_time_cmp(gpr_now(deadline.clock_type), deadline) < 0);
           grpc_pollset_work(g_pollset, deadline);
         }
         gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
         grpc_endpoint_destroy(write_st.ep);
         gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
         while (!read_st.done) {
-          GPR_ASSERT(gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
+          GPR_ASSERT(gpr_time_cmp(gpr_now(deadline.clock_type), deadline) < 0);
           grpc_pollset_work(g_pollset, deadline);
         }
         gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
diff --git a/test/core/iomgr/fd_posix_test.c b/test/core/iomgr/fd_posix_test.c
index cd268661db..7d00c098cc 100644
--- a/test/core/iomgr/fd_posix_test.c
+++ b/test/core/iomgr/fd_posix_test.c
@@ -249,7 +249,7 @@ static int server_start(server *sv) {
 static void server_wait_and_shutdown(server *sv) {
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (!sv->done) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_MONOTONIC));
   }
   gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
@@ -356,7 +356,7 @@ static void client_start(client *cl, int port) {
 static void client_wait_and_shutdown(client *cl) {
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (!cl->done) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_MONOTONIC));
   }
   gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
@@ -445,7 +445,7 @@ static void test_grpc_fd_change(void) {
   /* And now wait for it to run. */
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (a.cb_that_ran == NULL) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_MONOTONIC));
   }
   GPR_ASSERT(a.cb_that_ran == first_read_callback);
   gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
@@ -463,7 +463,7 @@ static void test_grpc_fd_change(void) {
 
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (b.cb_that_ran == NULL) {
-    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_REALTIME));
+    grpc_pollset_work(&g_pollset, gpr_inf_future(GPR_CLOCK_MONOTONIC));
   }
   /* Except now we verify that second_read_callback ran instead */
   GPR_ASSERT(b.cb_that_ran == second_read_callback);
diff --git a/test/core/iomgr/tcp_client_posix_test.c b/test/core/iomgr/tcp_client_posix_test.c
index 637886a738..38b7b5909d 100644
--- a/test/core/iomgr/tcp_client_posix_test.c
+++ b/test/core/iomgr/tcp_client_posix_test.c
@@ -196,13 +196,13 @@ void test_times_out(void) {
   gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (gpr_time_cmp(gpr_time_add(connect_deadline,
                                    gpr_time_from_seconds(2, GPR_TIMESPAN)),
-                      gpr_now(GPR_CLOCK_REALTIME)) > 0) {
+                      gpr_now(connect_deadline.clock_type)) > 0) {
     int is_after_deadline =
-        gpr_time_cmp(connect_deadline, gpr_now(GPR_CLOCK_REALTIME)) <= 0;
+        gpr_time_cmp(connect_deadline, gpr_now(GPR_CLOCK_MONOTONIC)) <= 0;
     if (is_after_deadline &&
         gpr_time_cmp(gpr_time_add(connect_deadline,
                                   gpr_time_from_seconds(1, GPR_TIMESPAN)),
-                     gpr_now(GPR_CLOCK_REALTIME)) > 0) {
+                     gpr_now(GPR_CLOCK_MONOTONIC)) > 0) {
       /* allow some slack before insisting that things be done */
     } else {
       GPR_ASSERT(g_connections_complete ==
diff --git a/test/core/iomgr/tcp_posix_test.c b/test/core/iomgr/tcp_posix_test.c
index a23c64928e..4e7fb446a7 100644
--- a/test/core/iomgr/tcp_posix_test.c
+++ b/test/core/iomgr/tcp_posix_test.c
@@ -172,7 +172,7 @@ static void read_test(ssize_t num_bytes, ssize_t slice_size) {
 
   create_sockets(sv);
 
-  ep = grpc_tcp_create(grpc_fd_create(sv[1], "read_test"), slice_size);
+  ep = grpc_tcp_create(grpc_fd_create(sv[1], "read_test"), slice_size, "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   written_bytes = fill_socket_partial(sv[0], num_bytes);
@@ -207,7 +207,8 @@ static void large_read_test(ssize_t slice_size) {
 
   create_sockets(sv);
 
-  ep = grpc_tcp_create(grpc_fd_create(sv[1], "large_read_test"), slice_size);
+  ep = grpc_tcp_create(grpc_fd_create(sv[1], "large_read_test"), slice_size,
+                       "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   written_bytes = fill_socket(sv[0]);
@@ -340,7 +341,7 @@ static void write_test(ssize_t num_bytes, ssize_t slice_size) {
   create_sockets(sv);
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "write_test"),
-                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE);
+                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE, "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   state.ep = ep;
@@ -394,7 +395,7 @@ static void write_error_test(ssize_t num_bytes, ssize_t slice_size) {
   create_sockets(sv);
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "write_error_test"),
-                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE);
+                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE, "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   close(sv[0]);
@@ -459,10 +460,10 @@ static grpc_endpoint_test_fixture create_fixture_tcp_socketpair(
   grpc_endpoint_test_fixture f;
 
   create_sockets(sv);
-  f.client_ep =
-      grpc_tcp_create(grpc_fd_create(sv[0], "fixture:client"), slice_size);
-  f.server_ep =
-      grpc_tcp_create(grpc_fd_create(sv[1], "fixture:server"), slice_size);
+  f.client_ep = grpc_tcp_create(grpc_fd_create(sv[0], "fixture:client"),
+                                slice_size, "test");
+  f.server_ep = grpc_tcp_create(grpc_fd_create(sv[1], "fixture:server"),
+                                slice_size, "test");
   grpc_endpoint_add_to_pollset(f.client_ep, &g_pollset);
   grpc_endpoint_add_to_pollset(f.server_ep, &g_pollset);
 
diff --git a/test/core/iomgr/tcp_server_posix_test.c b/test/core/iomgr/tcp_server_posix_test.c
index 83252a889b..f8d0fe8217 100644
--- a/test/core/iomgr/tcp_server_posix_test.c
+++ b/test/core/iomgr/tcp_server_posix_test.c
@@ -135,7 +135,7 @@ static void test_connect(int n) {
 
     gpr_log(GPR_DEBUG, "wait");
     while (g_nconnects == nconnects_before &&
-           gpr_time_cmp(deadline, gpr_now(GPR_CLOCK_REALTIME)) > 0) {
+           gpr_time_cmp(deadline, gpr_now(deadline.clock_type)) > 0) {
       grpc_pollset_work(&g_pollset, deadline);
     }
     gpr_log(GPR_DEBUG, "wait done");
diff --git a/test/core/surface/lame_client_test.c b/test/core/surface/lame_client_test.c
index b2facd33b1..3a7a3a36ee 100644
--- a/test/core/surface/lame_client_test.c
+++ b/test/core/surface/lame_client_test.c
@@ -57,7 +57,7 @@ int main(int argc, char **argv) {
 
   grpc_metadata_array_init(&trailing_metadata_recv);
 
-  chan = grpc_lame_client_channel_create();
+  chan = grpc_lame_client_channel_create("lampoon:national");
   GPR_ASSERT(chan);
   cq = grpc_completion_queue_create();
   call = grpc_channel_create_call(chan, cq, "/Foo", "anywhere",
diff --git a/test/core/util/test_config.h b/test/core/util/test_config.h
index 063c797ce9..7028ade7b2 100644
--- a/test/core/util/test_config.h
+++ b/test/core/util/test_config.h
@@ -52,12 +52,12 @@ extern "C" {
   (GRPC_TEST_SLOWDOWN_BUILD_FACTOR * GRPC_TEST_SLOWDOWN_MACHINE_FACTOR)
 
 #define GRPC_TIMEOUT_SECONDS_TO_DEADLINE(x)                                \
-  gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),                                \
+  gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),                               \
                gpr_time_from_micros(GRPC_TEST_SLOWDOWN_FACTOR * 1e6 * (x), \
                                     GPR_TIMESPAN))
 
 #define GRPC_TIMEOUT_MILLIS_TO_DEADLINE(x)                                 \
-  gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),                                \
+  gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),                               \
                gpr_time_from_micros(GRPC_TEST_SLOWDOWN_FACTOR * 1e3 * (x), \
                                     GPR_TIMESPAN))
 
diff --git a/test/cpp/client/credentials_test.cc b/test/cpp/client/credentials_test.cc
index ee94f455a4..bbf7705f0a 100644
--- a/test/cpp/client/credentials_test.cc
+++ b/test/cpp/client/credentials_test.cc
@@ -47,7 +47,7 @@ class CredentialsTest : public ::testing::Test {
 
 TEST_F(CredentialsTest, InvalidServiceAccountCreds) {
   std::shared_ptr<Credentials> bad1 = ServiceAccountCredentials("", "", 1);
-  EXPECT_EQ(nullptr, bad1.get());
+  EXPECT_EQ(static_cast<Credentials *>(nullptr), bad1.get());
 }
 
 }  // namespace testing
diff --git a/test/cpp/common/secure_auth_context_test.cc b/test/cpp/common/secure_auth_context_test.cc
index f18a04178e..d0243a5432 100644
--- a/test/cpp/common/secure_auth_context_test.cc
+++ b/test/cpp/common/secure_auth_context_test.cc
@@ -92,26 +92,6 @@ TEST_F(SecureAuthContextTest, Iterators) {
   EXPECT_EQ("bar", p2.second);
   ++iter;
   EXPECT_EQ(context.end(), iter);
-  // Range-based for loop test.
-  int i = 0;
-  for (auto p : context) {
-    switch (i++) {
-      case 0:
-        EXPECT_EQ("name", p.first);
-        EXPECT_EQ("chapi", p.second);
-        break;
-      case 1:
-        EXPECT_EQ("name", p.first);
-        EXPECT_EQ("chapo", p.second);
-        break;
-      case 2:
-        EXPECT_EQ("foo", p.first);
-        EXPECT_EQ("bar", p.second);
-        break;
-      default:
-        EXPECT_TRUE(0);
-    }
-  }
 }
 
 }  // namespace
diff --git a/test/cpp/end2end/async_end2end_test.cc b/test/cpp/end2end/async_end2end_test.cc
index 117d8bb9fa..b95bdf6b9b 100644
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@@ -415,7 +415,7 @@ TEST_F(AsyncEnd2endTest, ClientInitialMetadataRpc) {
   auto client_initial_metadata = srv_ctx.client_metadata();
   EXPECT_EQ(meta1.second, client_initial_metadata.find(meta1.first)->second);
   EXPECT_EQ(meta2.second, client_initial_metadata.find(meta2.first)->second);
-  EXPECT_EQ(static_cast<size_t>(2), client_initial_metadata.size());
+  EXPECT_GE(client_initial_metadata.size(), static_cast<size_t>(2));
 
   send_response.set_message(recv_request.message());
   response_writer.Finish(send_response, Status::OK, tag(3));
@@ -563,7 +563,7 @@ TEST_F(AsyncEnd2endTest, MetadataRpc) {
   auto client_initial_metadata = srv_ctx.client_metadata();
   EXPECT_EQ(meta1.second, client_initial_metadata.find(meta1.first)->second);
   EXPECT_EQ(meta2.second, client_initial_metadata.find(meta2.first)->second);
-  EXPECT_EQ(static_cast<size_t>(2), client_initial_metadata.size());
+  EXPECT_GE(client_initial_metadata.size(), static_cast<size_t>(2));
 
   srv_ctx.AddInitialMetadata(meta3.first, meta3.second);
   srv_ctx.AddInitialMetadata(meta4.first, meta4.second);
@@ -574,7 +574,7 @@ TEST_F(AsyncEnd2endTest, MetadataRpc) {
   auto server_initial_metadata = cli_ctx.GetServerInitialMetadata();
   EXPECT_EQ(meta3.second, server_initial_metadata.find(meta3.first)->second);
   EXPECT_EQ(meta4.second, server_initial_metadata.find(meta4.first)->second);
-  EXPECT_EQ(static_cast<size_t>(2), server_initial_metadata.size());
+  EXPECT_GE(server_initial_metadata.size(), static_cast<size_t>(2));
 
   send_response.set_message(recv_request.message());
   srv_ctx.AddTrailingMetadata(meta5.first, meta5.second);
@@ -590,7 +590,7 @@ TEST_F(AsyncEnd2endTest, MetadataRpc) {
   auto server_trailing_metadata = cli_ctx.GetServerTrailingMetadata();
   EXPECT_EQ(meta5.second, server_trailing_metadata.find(meta5.first)->second);
   EXPECT_EQ(meta6.second, server_trailing_metadata.find(meta6.first)->second);
-  EXPECT_EQ(static_cast<size_t>(2), server_trailing_metadata.size());
+  EXPECT_GE(server_trailing_metadata.size(), static_cast<size_t>(2));
 }
 }  // namespace
 }  // namespace testing
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 6367bea092..20e4c4ed55 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -249,9 +249,10 @@ class End2endTest : public ::testing::Test {
   void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
 
   void ResetStub() {
-    std::shared_ptr<ChannelInterface> channel =
-        CreateChannel(server_address_.str(), FakeTransportSecurityCredentials(),
-                      ChannelArguments());
+    ChannelArguments args;
+    args.SetString(GRPC_ARG_SECONDARY_USER_AGENT_STRING, "end2end_test");
+    std::shared_ptr<ChannelInterface> channel = CreateChannel(
+        server_address_.str(), FakeTransportSecurityCredentials(), args);
     stub_ = std::move(grpc::cpp::test::util::TestService::NewStub(channel));
   }
 
@@ -273,7 +274,7 @@ static void SendRpc(grpc::cpp::test::util::TestService::Stub* stub,
 
   for (int i = 0; i < num_rpcs; ++i) {
     ClientContext context;
-    context._experimental_set_compression_algorithm(GRPC_COMPRESS_GZIP);
+    context.set_compression_algorithm(GRPC_COMPRESS_GZIP);
     Status s = stub->Echo(&context, request, &response);
     EXPECT_EQ(response.message(), request.message());
     EXPECT_TRUE(s.ok());
@@ -508,7 +509,7 @@ TEST_F(End2endTest, DiffPackageServices) {
 // rpc and stream should fail on bad credentials.
 TEST_F(End2endTest, BadCredentials) {
   std::shared_ptr<Credentials> bad_creds = ServiceAccountCredentials("", "", 1);
-  EXPECT_EQ(nullptr, bad_creds.get());
+  EXPECT_EQ(static_cast<Credentials *>(nullptr), bad_creds.get());
   std::shared_ptr<ChannelInterface> channel =
       CreateChannel(server_address_.str(), bad_creds, ChannelArguments());
   std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub(
diff --git a/test/cpp/end2end/generic_end2end_test.cc b/test/cpp/end2end/generic_end2end_test.cc
index 8fe0d6886a..4951c82b9a 100644
--- a/test/cpp/end2end/generic_end2end_test.cc
+++ b/test/cpp/end2end/generic_end2end_test.cc
@@ -227,7 +227,7 @@ TEST_F(GenericEnd2endTest, SimpleBidiStreaming) {
   GenericServerContext srv_ctx;
   GenericServerAsyncReaderWriter srv_stream(&srv_ctx);
 
-  cli_ctx._experimental_set_compression_algorithm(GRPC_COMPRESS_GZIP);
+  cli_ctx.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 1f1e6c1306..d0393fafb2 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -69,6 +69,7 @@ DEFINE_string(test_case, "large_unary",
               "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; "
+              "per_rpc_creds: raw oauth2 access token on a single rpc; "
               "all : all of above.");
 DEFINE_string(default_service_account, "",
               "Email of GCE default service account");
@@ -117,6 +118,9 @@ int main(int argc, char** argv) {
   } 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 == "per_rpc_creds") {
+    grpc::string json_key = GetServiceAccountJsonKey();
+    client.DoPerRpcCreds(json_key, FLAGS_oauth_scope);
   } else if (FLAGS_test_case == "all") {
     client.DoEmpty();
     client.DoLargeUnary();
@@ -133,6 +137,7 @@ int main(int argc, char** argv) {
       client.DoServiceAccountCreds(json_key, FLAGS_oauth_scope);
       client.DoJwtTokenCreds(json_key);
       client.DoOauth2AuthToken(json_key, FLAGS_oauth_scope);
+      client.DoPerRpcCreds(json_key, FLAGS_oauth_scope);
     }
     // compute_engine_creds only runs in GCE.
   } else {
@@ -142,7 +147,7 @@ int main(int argc, char** argv) {
         "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|oauth2_auth_token",
+        "jwt_token_creds|oauth2_auth_token|per_rpc_creds",
         FLAGS_test_case.c_str());
     ret = 1;
   }
diff --git a/test/cpp/interop/interop_client.cc b/test/cpp/interop/interop_client.cc
index 4dcd8ad061..e5c0e4631f 100644
--- a/test/cpp/interop/interop_client.cc
+++ b/test/cpp/interop/interop_client.cc
@@ -41,8 +41,10 @@
 #include <grpc/support/log.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
+#include <grpc++/credentials.h>
 #include <grpc++/status.h>
 #include <grpc++/stream.h>
+#include "test/cpp/interop/client_helper.h"
 #include "test/proto/test.grpc.pb.h"
 #include "test/proto/empty.grpc.pb.h"
 #include "test/proto/messages.grpc.pb.h"
@@ -166,6 +168,32 @@ void InteropClient::DoOauth2AuthToken(const grpc::string& username,
   gpr_log(GPR_INFO, "Unary with oauth2 access token credentials done.");
 }
 
+void InteropClient::DoPerRpcCreds(const grpc::string& username,
+                                  const grpc::string& oauth_scope) {
+  gpr_log(GPR_INFO,
+          "Sending a unary rpc with per-rpc raw oauth2 access token ...");
+  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;
+  grpc::string access_token = GetOauth2AccessToken();
+  std::shared_ptr<Credentials> creds = AccessTokenCredentials(access_token);
+  context.set_credentials(creds);
+
+  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 per-rpc oauth2 access token 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 67eecd9ccc..bf8188325e 100644
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@@ -71,6 +71,9 @@ class InteropClient {
   // username is a string containing the user email
   void DoOauth2AuthToken(const grpc::string& username,
                          const grpc::string& oauth_scope);
+  // username is a string containing the user email
+  void DoPerRpcCreds(const grpc::string& username,
+                     const grpc::string& oauth_scope);
 
  private:
   void PerformLargeUnary(SimpleRequest* request, SimpleResponse* response);
diff --git a/test/cpp/qps/qps_test.cc b/test/cpp/qps/qps_test.cc
index 07b4834cc0..7b93443f7c 100644
--- a/test/cpp/qps/qps_test.cc
+++ b/test/cpp/qps/qps_test.cc
@@ -44,8 +44,8 @@
 namespace grpc {
 namespace testing {
 
-static const int WARMUP = 5;
-static const int BENCHMARK = 10;
+static const int WARMUP = 20;
+static const int BENCHMARK = 40;
 
 static void RunQPS() {
   gpr_log(GPR_INFO, "Running QPS test");
@@ -53,8 +53,8 @@ static void RunQPS() {
   ClientConfig client_config;
   client_config.set_client_type(ASYNC_CLIENT);
   client_config.set_enable_ssl(false);
-  client_config.set_outstanding_rpcs_per_channel(1000);
-  client_config.set_client_channels(8);
+  client_config.set_outstanding_rpcs_per_channel(10);
+  client_config.set_client_channels(800);
   client_config.set_payload_size(1);
   client_config.set_async_client_threads(8);
   client_config.set_rpc_type(UNARY);
@@ -62,7 +62,7 @@ static void RunQPS() {
   ServerConfig server_config;
   server_config.set_server_type(ASYNC_SERVER);
   server_config.set_enable_ssl(false);
-  server_config.set_threads(4);
+  server_config.set_threads(8);
 
   const auto result =
       RunScenario(client_config, 1, server_config, 1, WARMUP, BENCHMARK, -2);