test/core/end2end/tests/max_concurrent_streams.c - platform/external/grpc-grpc - Gitiles

 /*
  *
  * 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/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"

 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 (), NULL);
     }
   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), NULL).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
 simple_request_body (grpc_end2end_test_fixture f)
 {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time ();
   cq_verifier *cqv = cq_verifier_create (f.cq);
   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_call_details call_details;
   grpc_status_code status;
   grpc_call_error error;
   char *details = NULL;
   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);
   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;
   op->data.send_initial_metadata.count = 0;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_RECV_INITIAL_METADATA;
   op->data.recv_initial_metadata = &initial_metadata_recv;
   op->flags = 0;
   op->reserved = NULL;
   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->reserved = NULL;
   op++;
   error = grpc_call_start_batch (c, ops, (size_t) (op - ops), tag (1), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   error = grpc_server_request_call (f.server, &s, &call_details, &request_metadata_recv, f.cq, f.cq, tag (101));
   GPR_ASSERT (GRPC_CALL_OK == error);
   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->reserved = NULL;
   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_UNIMPLEMENTED;
   op->data.send_status_from_server.status_details = "xyz";
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
   op->data.recv_close_on_server.cancelled = &was_cancelled;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   error = grpc_call_start_batch (s, ops, (size_t) (op - ops), tag (102), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   cq_expect_completion (cqv, tag (102), 1);
   cq_expect_completion (cqv, tag (1), 1);
   cq_verify (cqv);

   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"));
   GPR_ASSERT (was_cancelled == 1);

   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);
 }

 static void
 test_max_concurrent_streams (grpc_end2end_test_config config)
 {
   grpc_end2end_test_fixture f;
   grpc_arg server_arg;
   grpc_channel_args server_args;
   grpc_call *c1;
   grpc_call *c2;
   grpc_call *s1;
   grpc_call *s2;
   int live_call;
   gpr_timespec deadline;
   cq_verifier *cqv;
   grpc_event ev;
   grpc_call_details call_details;
   grpc_metadata_array request_metadata_recv;
   grpc_metadata_array initial_metadata_recv1;
   grpc_metadata_array trailing_metadata_recv1;
   grpc_metadata_array initial_metadata_recv2;
   grpc_metadata_array trailing_metadata_recv2;
   grpc_status_code status1;
   grpc_call_error error;
   char *details1 = NULL;
   size_t details_capacity1 = 0;
   grpc_status_code status2;
   char *details2 = NULL;
   size_t details_capacity2 = 0;
   grpc_op ops[6];
   grpc_op *op;
   int was_cancelled;
   int got_client_start;
   int got_server_start;

   server_arg.key = GRPC_ARG_MAX_CONCURRENT_STREAMS;
   server_arg.type = GRPC_ARG_INTEGER;
   server_arg.value.integer = 1;

   server_args.num_args = 1;
   server_args.args = &server_arg;

   f = begin_test (config, "test_max_concurrent_streams", NULL, &server_args);
   cqv = cq_verifier_create (f.cq);

   grpc_metadata_array_init (&request_metadata_recv);
   grpc_metadata_array_init (&initial_metadata_recv1);
   grpc_metadata_array_init (&trailing_metadata_recv1);
   grpc_metadata_array_init (&initial_metadata_recv2);
   grpc_metadata_array_init (&trailing_metadata_recv2);
   grpc_call_details_init (&call_details);

   /* perform a ping-pong to ensure that settings have had a chance to round
      trip */
   simple_request_body (f);
   /* perform another one to make sure that the one stream case still works */
   simple_request_body (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);
   GPR_ASSERT (c1);
   c2 = grpc_channel_create_call (f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/beta", "foo.test.google.fr:1234", deadline, NULL);
   GPR_ASSERT (c2);

   GPR_ASSERT (GRPC_CALL_OK == grpc_server_request_call (f.server, &s1, &call_details, &request_metadata_recv, f.cq, f.cq, tag (101)));

   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   error = grpc_call_start_batch (c1, ops, (size_t) (op - ops), tag (301), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   op = ops;
   op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
   op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv1;
   op->data.recv_status_on_client.status = &status1;
   op->data.recv_status_on_client.status_details = &details1;
   op->data.recv_status_on_client.status_details_capacity = &details_capacity1;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_RECV_INITIAL_METADATA;
   op->data.recv_initial_metadata = &initial_metadata_recv1;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   error = grpc_call_start_batch (c1, ops, (size_t) (op - ops), tag (302), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   error = grpc_call_start_batch (c2, ops, (size_t) (op - ops), tag (401), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   op = ops;
   op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
   op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv2;
   op->data.recv_status_on_client.status = &status2;
   op->data.recv_status_on_client.status_details = &details2;
   op->data.recv_status_on_client.status_details_capacity = &details_capacity2;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_RECV_INITIAL_METADATA;
   op->data.recv_initial_metadata = &initial_metadata_recv1;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   error = grpc_call_start_batch (c2, ops, (size_t) (op - ops), tag (402), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   got_client_start = 0;
   got_server_start = 0;
   live_call = -1;
   while (!got_client_start || !got_server_start)
     {
       ev = grpc_completion_queue_next (f.cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE (3), NULL);
       GPR_ASSERT (ev.type == GRPC_OP_COMPLETE);
       GPR_ASSERT (ev.success);
       if (ev.tag == tag (101))
 	{
 	  GPR_ASSERT (!got_server_start);
 	  got_server_start = 1;
 	}
       else
 	{
 	  GPR_ASSERT (!got_client_start);
 	  GPR_ASSERT (ev.tag == tag (301) || ev.tag == tag (401));
 	  /* The /alpha or /beta calls started above could be invoked (but NOT
 	   * both);
 	   * check this here */
 	  /* We'll get tag 303 or 403, we want 300, 400 */
 	  live_call = ((int) (gpr_intptr) ev.tag) - 1;
 	  got_client_start = 1;
 	}
     }
   GPR_ASSERT (live_call == 300 || live_call == 400);

   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
   op->data.recv_close_on_server.cancelled = &was_cancelled;
   op->flags = 0;
   op->reserved = NULL;
   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_UNIMPLEMENTED;
   op->data.send_status_from_server.status_details = "xyz";
   op->flags = 0;
   op->reserved = NULL;
   op++;
   error = grpc_call_start_batch (s1, ops, (size_t) (op - ops), tag (102), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   cq_expect_completion (cqv, tag (102), 1);
   cq_expect_completion (cqv, tag (live_call + 2), 1);
   /* first request is finished, we should be able to start the second */
   live_call = (live_call == 300) ? 400 : 300;
   cq_expect_completion (cqv, tag (live_call + 1), 1);
   cq_verify (cqv);

   GPR_ASSERT (GRPC_CALL_OK == grpc_server_request_call (f.server, &s2, &call_details, &request_metadata_recv, f.cq, f.cq, tag (201)));
   cq_expect_completion (cqv, tag (201), 1);
   cq_verify (cqv);

   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
   op->flags = 0;
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
   op->data.recv_close_on_server.cancelled = &was_cancelled;
   op->flags = 0;
   op->reserved = NULL;
   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_UNIMPLEMENTED;
   op->data.send_status_from_server.status_details = "xyz";
   op->flags = 0;
   op->reserved = NULL;
   op++;
   error = grpc_call_start_batch (s2, ops, (size_t) (op - ops), tag (202), NULL);
   GPR_ASSERT (GRPC_CALL_OK == error);

   cq_expect_completion (cqv, tag (live_call + 2), 1);
   cq_expect_completion (cqv, tag (202), 1);
   cq_verify (cqv);

   cq_verifier_destroy (cqv);

   grpc_call_destroy (c1);
   grpc_call_destroy (s1);
   grpc_call_destroy (c2);
   grpc_call_destroy (s2);

   gpr_free (details1);
   gpr_free (details2);
   grpc_metadata_array_destroy (&initial_metadata_recv1);
   grpc_metadata_array_destroy (&trailing_metadata_recv1);
   grpc_metadata_array_destroy (&initial_metadata_recv2);
   grpc_metadata_array_destroy (&trailing_metadata_recv2);
   grpc_metadata_array_destroy (&request_metadata_recv);
   grpc_call_details_destroy (&call_details);

   end_test (&f);
   config.tear_down_data (&f);
 }

 void
 grpc_end2end_tests (grpc_end2end_test_config config)
 {
   test_max_concurrent_streams (config);
 }
	/*
	*
	* 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/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"

	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 (), NULL);
	}
	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), NULL).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
	simple_request_body (grpc_end2end_test_fixture f)
	{
	grpc_call *c;
	grpc_call *s;
	gpr_timespec deadline = five_seconds_time ();
	cq_verifier *cqv = cq_verifier_create (f.cq);
	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_call_details call_details;
	grpc_status_code status;
	grpc_call_error error;
	char *details = NULL;
	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);
	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;
	op->data.send_initial_metadata.count = 0;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_RECV_INITIAL_METADATA;
	op->data.recv_initial_metadata = &initial_metadata_recv;
	op->flags = 0;
	op->reserved = NULL;
	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->reserved = NULL;
	op++;
	error = grpc_call_start_batch (c, ops, (size_t) (op - ops), tag (1), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	error = grpc_server_request_call (f.server, &s, &call_details, &request_metadata_recv, f.cq, f.cq, tag (101));
	GPR_ASSERT (GRPC_CALL_OK == error);
	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->reserved = NULL;
	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_UNIMPLEMENTED;
	op->data.send_status_from_server.status_details = "xyz";
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
	op->data.recv_close_on_server.cancelled = &was_cancelled;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	error = grpc_call_start_batch (s, ops, (size_t) (op - ops), tag (102), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	cq_expect_completion (cqv, tag (102), 1);
	cq_expect_completion (cqv, tag (1), 1);
	cq_verify (cqv);

	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"));
	GPR_ASSERT (was_cancelled == 1);

	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);
	}

	static void
	test_max_concurrent_streams (grpc_end2end_test_config config)
	{
	grpc_end2end_test_fixture f;
	grpc_arg server_arg;
	grpc_channel_args server_args;
	grpc_call *c1;
	grpc_call *c2;
	grpc_call *s1;
	grpc_call *s2;
	int live_call;
	gpr_timespec deadline;
	cq_verifier *cqv;
	grpc_event ev;
	grpc_call_details call_details;
	grpc_metadata_array request_metadata_recv;
	grpc_metadata_array initial_metadata_recv1;
	grpc_metadata_array trailing_metadata_recv1;
	grpc_metadata_array initial_metadata_recv2;
	grpc_metadata_array trailing_metadata_recv2;
	grpc_status_code status1;
	grpc_call_error error;
	char *details1 = NULL;
	size_t details_capacity1 = 0;
	grpc_status_code status2;
	char *details2 = NULL;
	size_t details_capacity2 = 0;
	grpc_op ops[6];
	grpc_op *op;
	int was_cancelled;
	int got_client_start;
	int got_server_start;

	server_arg.key = GRPC_ARG_MAX_CONCURRENT_STREAMS;
	server_arg.type = GRPC_ARG_INTEGER;
	server_arg.value.integer = 1;

	server_args.num_args = 1;
	server_args.args = &server_arg;

	f = begin_test (config, "test_max_concurrent_streams", NULL, &server_args);
	cqv = cq_verifier_create (f.cq);

	grpc_metadata_array_init (&request_metadata_recv);
	grpc_metadata_array_init (&initial_metadata_recv1);
	grpc_metadata_array_init (&trailing_metadata_recv1);
	grpc_metadata_array_init (&initial_metadata_recv2);
	grpc_metadata_array_init (&trailing_metadata_recv2);
	grpc_call_details_init (&call_details);

	/* perform a ping-pong to ensure that settings have had a chance to round
	trip */
	simple_request_body (f);
	/* perform another one to make sure that the one stream case still works */
	simple_request_body (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);
	GPR_ASSERT (c1);
	c2 = grpc_channel_create_call (f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, "/beta", "foo.test.google.fr:1234", deadline, NULL);
	GPR_ASSERT (c2);

	GPR_ASSERT (GRPC_CALL_OK == grpc_server_request_call (f.server, &s1, &call_details, &request_metadata_recv, f.cq, f.cq, tag (101)));

	op = ops;
	op->op = GRPC_OP_SEND_INITIAL_METADATA;
	op->data.send_initial_metadata.count = 0;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	error = grpc_call_start_batch (c1, ops, (size_t) (op - ops), tag (301), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	op = ops;
	op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
	op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv1;
	op->data.recv_status_on_client.status = &status1;
	op->data.recv_status_on_client.status_details = &details1;
	op->data.recv_status_on_client.status_details_capacity = &details_capacity1;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_RECV_INITIAL_METADATA;
	op->data.recv_initial_metadata = &initial_metadata_recv1;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	error = grpc_call_start_batch (c1, ops, (size_t) (op - ops), tag (302), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	op = ops;
	op->op = GRPC_OP_SEND_INITIAL_METADATA;
	op->data.send_initial_metadata.count = 0;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	error = grpc_call_start_batch (c2, ops, (size_t) (op - ops), tag (401), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	op = ops;
	op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
	op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv2;
	op->data.recv_status_on_client.status = &status2;
	op->data.recv_status_on_client.status_details = &details2;
	op->data.recv_status_on_client.status_details_capacity = &details_capacity2;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_RECV_INITIAL_METADATA;
	op->data.recv_initial_metadata = &initial_metadata_recv1;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	error = grpc_call_start_batch (c2, ops, (size_t) (op - ops), tag (402), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	got_client_start = 0;
	got_server_start = 0;
	live_call = -1;
	while (!got_client_start \|\| !got_server_start)
	{
	ev = grpc_completion_queue_next (f.cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE (3), NULL);
	GPR_ASSERT (ev.type == GRPC_OP_COMPLETE);
	GPR_ASSERT (ev.success);
	if (ev.tag == tag (101))
	{
	GPR_ASSERT (!got_server_start);
	got_server_start = 1;
	}
	else
	{
	GPR_ASSERT (!got_client_start);
	GPR_ASSERT (ev.tag == tag (301) \|\| ev.tag == tag (401));
	/* The /alpha or /beta calls started above could be invoked (but NOT
	* both);
	* check this here */
	/* We'll get tag 303 or 403, we want 300, 400 */
	live_call = ((int) (gpr_intptr) ev.tag) - 1;
	got_client_start = 1;
	}
	}
	GPR_ASSERT (live_call == 300 \|\| live_call == 400);

	op = ops;
	op->op = GRPC_OP_SEND_INITIAL_METADATA;
	op->data.send_initial_metadata.count = 0;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
	op->data.recv_close_on_server.cancelled = &was_cancelled;
	op->flags = 0;
	op->reserved = NULL;
	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_UNIMPLEMENTED;
	op->data.send_status_from_server.status_details = "xyz";
	op->flags = 0;
	op->reserved = NULL;
	op++;
	error = grpc_call_start_batch (s1, ops, (size_t) (op - ops), tag (102), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	cq_expect_completion (cqv, tag (102), 1);
	cq_expect_completion (cqv, tag (live_call + 2), 1);
	/* first request is finished, we should be able to start the second */
	live_call = (live_call == 300) ? 400 : 300;
	cq_expect_completion (cqv, tag (live_call + 1), 1);
	cq_verify (cqv);

	GPR_ASSERT (GRPC_CALL_OK == grpc_server_request_call (f.server, &s2, &call_details, &request_metadata_recv, f.cq, f.cq, tag (201)));
	cq_expect_completion (cqv, tag (201), 1);
	cq_verify (cqv);

	op = ops;
	op->op = GRPC_OP_SEND_INITIAL_METADATA;
	op->data.send_initial_metadata.count = 0;
	op->flags = 0;
	op->reserved = NULL;
	op++;
	op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
	op->data.recv_close_on_server.cancelled = &was_cancelled;
	op->flags = 0;
	op->reserved = NULL;
	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_UNIMPLEMENTED;
	op->data.send_status_from_server.status_details = "xyz";
	op->flags = 0;
	op->reserved = NULL;
	op++;
	error = grpc_call_start_batch (s2, ops, (size_t) (op - ops), tag (202), NULL);
	GPR_ASSERT (GRPC_CALL_OK == error);

	cq_expect_completion (cqv, tag (live_call + 2), 1);
	cq_expect_completion (cqv, tag (202), 1);
	cq_verify (cqv);

	cq_verifier_destroy (cqv);

	grpc_call_destroy (c1);
	grpc_call_destroy (s1);
	grpc_call_destroy (c2);
	grpc_call_destroy (s2);

	gpr_free (details1);
	gpr_free (details2);
	grpc_metadata_array_destroy (&initial_metadata_recv1);
	grpc_metadata_array_destroy (&trailing_metadata_recv1);
	grpc_metadata_array_destroy (&initial_metadata_recv2);
	grpc_metadata_array_destroy (&trailing_metadata_recv2);
	grpc_metadata_array_destroy (&request_metadata_recv);
	grpc_call_details_destroy (&call_details);

	end_test (&f);
	config.tear_down_data (&f);
	}

	void
	grpc_end2end_tests (grpc_end2end_test_config config)
	{
	test_max_concurrent_streams (config);
	}