text: /*
   *
   * 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"
  
  static void *tag(intptr_t t) { return (void *)t; }
  
  static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                              const char *test_name,
                                              grpc_channel_args *client_args,
                                              grpc_channel_args *server_args) {
    grpc_end2end_test_fixture f;
    gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
    f = config.create_fixture(client_args, server_args);
    config.init_server(&f, server_args);
    config.init_client(&f, client_args);
    return f;
  }
  
  static gpr_timespec n_seconds_from_now(int n) {
    return grpc_timeout_seconds_to_deadline(n);
  }
  
  static gpr_timespec five_seconds_from_now(void) {
    return n_seconds_from_now(5);
  }
  
  static void drain_cq(grpc_completion_queue *cq) {
    grpc_event ev;
    do {
      ev = grpc_completion_queue_next(cq, five_seconds_from_now(), NULL);
    } while (ev.type != GRPC_QUEUE_SHUTDOWN);
  }
  
  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_client(f);
  
    grpc_completion_queue_shutdown(f->cq);
    drain_cq(f->cq);
    grpc_completion_queue_destroy(f->cq);
    /* f->shutdown_cq is not used in this test */
    grpc_completion_queue_destroy(f->shutdown_cq);
  }
  
  static void test_early_server_shutdown_finishes_inflight_calls(
      grpc_end2end_test_config config) {
    grpc_call *c;
    grpc_call *s;
    grpc_end2end_test_fixture f = begin_test(
        config, "test_early_server_shutdown_finishes_inflight_calls", NULL, NULL);
    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;
    grpc_slice details;
    int was_cancelled = 2;
  
    gpr_timespec deadline = five_seconds_from_now();
    c = grpc_channel_create_call(
        f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
        grpc_slice_from_static_string("/foo"),
        get_host_override_slice("foo.test.google.fr:1234", config), 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);
  
    memset(ops, 0, sizeof(ops));
    op = ops;
    op->op = GRPC_OP_SEND_INITIAL_METADATA;
    op->data.send_initial_metadata.count = 0;
    op->data.send_initial_metadata.metadata = NULL;
    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.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->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);
  
    memset(ops, 0, sizeof(ops));
    op = ops;
    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);
  
    /* shutdown and destroy the server */
    grpc_server_shutdown_and_notify(f.server, f.cq, tag(1000));
    grpc_server_cancel_all_calls(f.server);
  
    CQ_EXPECT_COMPLETION(cqv, tag(1000), 1);
    CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
    CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
    cq_verify(cqv);
  
    grpc_server_destroy(f.server);
  
    GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
    GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
    validate_host_override_string("foo.test.google.fr:1234", call_details.host,
                                  config);
    GPR_ASSERT(was_cancelled == 1);
  
    grpc_slice_unref(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_unref(c);
    grpc_call_unref(s);
  
    cq_verifier_destroy(cqv);
  
    end_test(&f);
    config.tear_down_data(&f);
  }
  
  void shutdown_finishes_calls(grpc_end2end_test_config config) {
    test_early_server_shutdown_finishes_inflight_calls(config);
  }
  
  void shutdown_finishes_calls_pre_init(void) {}
  