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 "test/core/util/test_tcp_server.h"
20
21 #include <stdint.h>
22 #include <string.h>
23
24 #include <algorithm>
25
26 #include <grpc/grpc.h>
27 #include <grpc/support/alloc.h>
28 #include <grpc/support/log.h>
29 #include <grpc/support/sync.h>
30 #include <grpc/support/time.h>
31
32 #include "src/core/lib/channel/channel_args_preconditioning.h"
33 #include "src/core/lib/config/core_configuration.h"
34 #include "src/core/lib/event_engine/channel_args_endpoint_config.h"
35 #include "src/core/lib/gprpp/time.h"
36 #include "src/core/lib/iomgr/error.h"
37 #include "src/core/lib/iomgr/exec_ctx.h"
38 #include "src/core/lib/iomgr/pollset.h"
39 #include "src/core/lib/iomgr/resolved_address.h"
40 #include "src/core/lib/iomgr/sockaddr.h"
41 #include "src/core/lib/iomgr/socket_utils.h"
42 #include "src/core/lib/iomgr/tcp_server.h"
43 #include "test/core/util/test_config.h"
44
on_server_destroyed(void * data,grpc_error_handle)45 static void on_server_destroyed(void* data, grpc_error_handle /*error*/) {
46 test_tcp_server* server = static_cast<test_tcp_server*>(data);
47 gpr_mu_lock(server->mu);
48 server->shutdown = true;
49 gpr_mu_unlock(server->mu);
50 }
51
test_tcp_server_init(test_tcp_server * server,grpc_tcp_server_cb on_connect,void * user_data)52 void test_tcp_server_init(test_tcp_server* server,
53 grpc_tcp_server_cb on_connect, void* user_data) {
54 grpc_init();
55 GRPC_CLOSURE_INIT(&server->shutdown_complete, on_server_destroyed, server,
56 grpc_schedule_on_exec_ctx);
57
58 grpc_pollset* pollset =
59 static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size()));
60 grpc_pollset_init(pollset, &server->mu);
61 server->pollset.push_back(pollset);
62 server->on_connect = on_connect;
63 server->cb_data = user_data;
64 }
65
test_tcp_server_start(test_tcp_server * server,int port)66 void test_tcp_server_start(test_tcp_server* server, int port) {
67 grpc_resolved_address resolved_addr;
68 grpc_sockaddr_in* addr =
69 reinterpret_cast<grpc_sockaddr_in*>(resolved_addr.addr);
70 int port_added;
71 grpc_core::ExecCtx exec_ctx;
72
73 addr->sin_family = GRPC_AF_INET;
74 addr->sin_port = grpc_htons(static_cast<uint16_t>(port));
75 memset(&addr->sin_addr, 0, sizeof(addr->sin_addr));
76 resolved_addr.len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in));
77
78 auto args = grpc_core::CoreConfiguration::Get()
79 .channel_args_preconditioning()
80 .PreconditionChannelArgs(nullptr);
81 grpc_error_handle error = grpc_tcp_server_create(
82 &server->shutdown_complete,
83 grpc_event_engine::experimental::ChannelArgsEndpointConfig(args),
84 server->on_connect, server->cb_data, &server->tcp_server);
85 GPR_ASSERT(error.ok());
86 error =
87 grpc_tcp_server_add_port(server->tcp_server, &resolved_addr, &port_added);
88 GPR_ASSERT(error.ok());
89 GPR_ASSERT(port_added == port);
90
91 grpc_tcp_server_start(server->tcp_server, &server->pollset);
92 gpr_log(GPR_INFO, "test tcp server listening on 0.0.0.0:%d", port);
93 }
94
test_tcp_server_poll(test_tcp_server * server,int milliseconds)95 void test_tcp_server_poll(test_tcp_server* server, int milliseconds) {
96 grpc_pollset_worker* worker = nullptr;
97 grpc_core::ExecCtx exec_ctx;
98 grpc_core::Timestamp deadline = grpc_core::Timestamp::FromTimespecRoundUp(
99 grpc_timeout_milliseconds_to_deadline(milliseconds));
100 gpr_mu_lock(server->mu);
101 GRPC_LOG_IF_ERROR("pollset_work",
102 grpc_pollset_work(server->pollset[0], &worker, deadline));
103 gpr_mu_unlock(server->mu);
104 }
105
do_nothing(void *,grpc_error_handle)106 static void do_nothing(void* /*arg*/, grpc_error_handle /*error*/) {}
finish_pollset(void * arg,grpc_error_handle)107 static void finish_pollset(void* arg, grpc_error_handle /*error*/) {
108 grpc_pollset_destroy(static_cast<grpc_pollset*>(arg));
109 }
110
test_tcp_server_destroy(test_tcp_server * server)111 void test_tcp_server_destroy(test_tcp_server* server) {
112 grpc_core::ExecCtx exec_ctx;
113 gpr_timespec shutdown_deadline;
114 grpc_closure do_nothing_cb;
115 grpc_tcp_server_unref(server->tcp_server);
116 GRPC_CLOSURE_INIT(&do_nothing_cb, do_nothing, nullptr,
117 grpc_schedule_on_exec_ctx);
118 shutdown_deadline = gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
119 gpr_time_from_seconds(5, GPR_TIMESPAN));
120 grpc_core::ExecCtx::Get()->Flush();
121 gpr_mu_lock(server->mu);
122 while (!server->shutdown &&
123 gpr_time_cmp(gpr_now(GPR_CLOCK_MONOTONIC), shutdown_deadline) < 0) {
124 gpr_mu_unlock(server->mu);
125 test_tcp_server_poll(server, 100);
126 gpr_mu_lock(server->mu);
127 }
128 gpr_mu_unlock(server->mu);
129 grpc_pollset_shutdown(server->pollset[0],
130 GRPC_CLOSURE_CREATE(finish_pollset, server->pollset[0],
131 grpc_schedule_on_exec_ctx));
132 grpc_core::ExecCtx::Get()->Flush();
133 gpr_free(server->pollset[0]);
134 grpc_shutdown();
135 }
136