test/core/util/test_tcp_server.cc

   1 /*
   2  *
   3  * Copyright 2015 gRPC authors.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  */
  18
  19 #include "src/core/lib/iomgr/sockaddr.h"
  20 #include "src/core/lib/iomgr/socket_utils.h"
  21
  22 #include "test/core/util/test_tcp_server.h"
  23
  24 #include <grpc/grpc.h>
  25 #include <grpc/support/alloc.h>
  26 #include <grpc/support/log.h>
  27 #include <grpc/support/sync.h>
  28 #include <grpc/support/time.h>
  29 #include <string.h>
  30
  31 #include "src/core/lib/iomgr/endpoint.h"
  32 #include "src/core/lib/iomgr/resolve_address.h"
  33 #include "src/core/lib/iomgr/tcp_server.h"
  34 #include "test/core/util/port.h"
  35 #include "test/core/util/test_config.h"
  36
  37 static void on_server_destroyed(void* data, grpc_error* error) {
  38   test_tcp_server* server = static_cast<test_tcp_server*>(data);
  39   server->shutdown = 1;
  40 }
  41
  42 void test_tcp_server_init(test_tcp_server* server,
  43                           grpc_tcp_server_cb on_connect, void* user_data) {
  44   grpc_init();
  45   server->tcp_server = nullptr;
  46   GRPC_CLOSURE_INIT(&server->shutdown_complete, on_server_destroyed, server,
  47                     grpc_schedule_on_exec_ctx);
  48   server->shutdown = 0;
  49   server->pollset = static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size()));
  50   grpc_pollset_init(server->pollset, &server->mu);
  51   server->on_connect = on_connect;
  52   server->cb_data = user_data;
  53 }
  54
  55 void test_tcp_server_start(test_tcp_server* server, int port) {
  56   grpc_resolved_address resolved_addr;
  57   grpc_sockaddr_in* addr =
  58       reinterpret_cast<grpc_sockaddr_in*>(resolved_addr.addr);
  59   int port_added;
  60   grpc_core::ExecCtx exec_ctx;
  61
  62   addr->sin_family = GRPC_AF_INET;
  63   addr->sin_port = grpc_htons(static_cast<uint16_t>(port));
  64   memset(&addr->sin_addr, 0, sizeof(addr->sin_addr));
  65
  66   grpc_error* error = grpc_tcp_server_create(&server->shutdown_complete,
  67                                              nullptr, &server->tcp_server);
  68   GPR_ASSERT(error == GRPC_ERROR_NONE);
  69   error =
  70       grpc_tcp_server_add_port(server->tcp_server, &resolved_addr, &port_added);
  71   GPR_ASSERT(error == GRPC_ERROR_NONE);
  72   GPR_ASSERT(port_added == port);
  73
  74   grpc_tcp_server_start(server->tcp_server, &server->pollset, 1,
  75                         server->on_connect, server->cb_data);
  76   gpr_log(GPR_INFO, "test tcp server listening on 0.0.0.0:%d", port);
  77 }
  78
  79 void test_tcp_server_poll(test_tcp_server* server, int milliseconds) {
  80   grpc_pollset_worker* worker = nullptr;
  81   grpc_core::ExecCtx exec_ctx;
  82   grpc_millis deadline = grpc_timespec_to_millis_round_up(
  83       grpc_timeout_milliseconds_to_deadline(milliseconds));
  84   gpr_mu_lock(server->mu);
  85   GRPC_LOG_IF_ERROR("pollset_work",
  86                     grpc_pollset_work(server->pollset, &worker, deadline));
  87   gpr_mu_unlock(server->mu);
  88 }
  89
  90 static void do_nothing(void* arg, grpc_error* error) {}
  91 static void finish_pollset(void* arg, grpc_error* error) {
  92   grpc_pollset_destroy(static_cast<grpc_pollset*>(arg));
  93 }
  94
  95 void test_tcp_server_destroy(test_tcp_server* server) {
  96   grpc_core::ExecCtx exec_ctx;
  97   gpr_timespec shutdown_deadline;
  98   grpc_closure do_nothing_cb;
  99   grpc_tcp_server_unref(server->tcp_server);
 100   GRPC_CLOSURE_INIT(&do_nothing_cb, do_nothing, nullptr,
 101                     grpc_schedule_on_exec_ctx);
 102   shutdown_deadline = gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
 103                                    gpr_time_from_seconds(5, GPR_TIMESPAN));
 104   grpc_core::ExecCtx::Get()->Flush();
 105   while (!server->shutdown &&
 106          gpr_time_cmp(gpr_now(GPR_CLOCK_MONOTONIC), shutdown_deadline) < 0) {
 107     test_tcp_server_poll(server, 1000);
 108   }
 109   grpc_pollset_shutdown(server->pollset,
 110                         GRPC_CLOSURE_CREATE(finish_pollset, server->pollset,
 111                                             grpc_schedule_on_exec_ctx));
 112   grpc_core::ExecCtx::Get()->Flush();
 113   gpr_free(server->pollset);
 114   grpc_shutdown();
 115 }