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1 /* Copyright libuv project contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #include "uv.h"
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23 #include "task.h"
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24
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28
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29 #if !defined(__linux__) && !defined(__FreeBSD__) && \
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30 !defined(__DragonFly__) && !defined(__sun) && !defined(_AIX73)
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31
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32 TEST_IMPL(tcp_reuseport) {
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33 struct sockaddr_in addr;
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34 uv_loop_t* loop;
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35 uv_tcp_t handle;
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36 int r;
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37
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38 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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39
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40 loop = uv_default_loop();
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41 ASSERT_NOT_NULL(loop);
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42
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43 r = uv_tcp_init(loop, &handle);
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44 ASSERT_OK(r);
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45
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46 r = uv_tcp_bind(&handle, (const struct sockaddr*) &addr, UV_TCP_REUSEPORT);
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47 ASSERT_EQ(r, UV_ENOTSUP);
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48
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49 MAKE_VALGRIND_HAPPY(loop);
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50
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51 return 0;
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52 }
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53
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54 #else
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55
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56 #define NUM_LISTENING_THREADS 2
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57 #define MAX_TCP_CLIENTS 10
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58
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59 static uv_tcp_t tcp_connect_handles[MAX_TCP_CLIENTS];
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60 static uv_connect_t tcp_connect_requests[MAX_TCP_CLIENTS];
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61
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62 static uv_sem_t semaphore;
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63
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64 static uv_mutex_t mutex;
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65 static unsigned int accepted;
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66
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67 static unsigned int thread_loop1_accepted;
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68 static unsigned int thread_loop2_accepted;
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69 static unsigned int connected;
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70
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71 static uv_loop_t* main_loop;
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72 static uv_loop_t thread_loop1;
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73 static uv_loop_t thread_loop2;
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74 static uv_tcp_t thread_handle1;
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75 static uv_tcp_t thread_handle2;
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76 static uv_timer_t thread_timer_handle1;
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77 static uv_timer_t thread_timer_handle2;
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78
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79 static void on_close(uv_handle_t* handle) {
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80 free(handle);
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81 }
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82
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83 static void ticktack(uv_timer_t* timer) {
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84 ASSERT(timer == &thread_timer_handle1 || timer == &thread_timer_handle2);
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85
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86 int done = 0;
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87 uv_mutex_lock(&mutex);
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88 if (accepted == MAX_TCP_CLIENTS) {
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89 done = 1;
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90 }
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91 uv_mutex_unlock(&mutex);
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92
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93 if (done) {
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94 uv_close((uv_handle_t*) timer, NULL);
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95 if (timer->loop == &thread_loop1)
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96 uv_close((uv_handle_t*) &thread_handle1, NULL);
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97 if (timer->loop == &thread_loop2)
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98 uv_close((uv_handle_t*) &thread_handle2, NULL);
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99 }
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100 }
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101
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102 static void on_connection(uv_stream_t* server, int status)
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103 {
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104 ASSERT_OK(status);
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105 ASSERT(server == (uv_stream_t*) &thread_handle1 || \
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106 server == (uv_stream_t*) &thread_handle2);
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107
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108 uv_tcp_t *client = malloc(sizeof(uv_tcp_t));
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109 ASSERT_OK(uv_tcp_init(server->loop, client));
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110 ASSERT_OK(uv_accept(server, (uv_stream_t*) client));
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111 uv_close((uv_handle_t*) client, on_close);
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112
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113 if (server->loop == &thread_loop1)
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114 thread_loop1_accepted++;
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115
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116 if (server->loop == &thread_loop2)
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117 thread_loop2_accepted++;
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118
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119 uv_mutex_lock(&mutex);
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120 accepted++;
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121 uv_mutex_unlock(&mutex);
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122 }
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123
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124 static void on_connect(uv_connect_t* req, int status) {
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125 ASSERT_OK(status);
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126 ASSERT_NOT_NULL(req->handle);
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127 ASSERT_PTR_EQ(req->handle->loop, main_loop);
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128
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129 connected++;
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130 uv_close((uv_handle_t*) req->handle, NULL);
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131 }
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132
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133 static void create_listener(uv_loop_t* loop, uv_tcp_t* handle) {
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134 struct sockaddr_in addr;
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135 int r;
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136
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137 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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138
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139 r = uv_tcp_init(loop, handle);
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140 ASSERT_OK(r);
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141
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142 r = uv_tcp_bind(handle, (const struct sockaddr*) &addr, UV_TCP_REUSEPORT);
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143 ASSERT_OK(r);
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144
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145 r = uv_listen((uv_stream_t*) handle, 128, on_connection);
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146 ASSERT_OK(r);
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147 }
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148
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149 static void run_event_loop(void* arg) {
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150 int r;
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151 uv_tcp_t* handle;
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152 uv_timer_t* timer;
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153 uv_loop_t* loop = (uv_loop_t*) arg;
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154 ASSERT(loop == &thread_loop1 || loop == &thread_loop2);
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155
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156 if (loop == &thread_loop1) {
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157 handle = &thread_handle1;
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158 timer = &thread_timer_handle1;
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159 } else {
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160 handle = &thread_handle2;
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161 timer = &thread_timer_handle2;
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162 }
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163
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164 create_listener(loop, handle);
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165 r = uv_timer_init(loop, timer);
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166 ASSERT_OK(r);
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167 r = uv_timer_start(timer, ticktack, 0, 10);
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168 ASSERT_OK(r);
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169
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170 /* Notify the main thread to start connecting. */
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171 uv_sem_post(&semaphore);
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172 r = uv_run(loop, UV_RUN_DEFAULT);
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173 ASSERT_OK(r);
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174 }
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175
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176 TEST_IMPL(tcp_reuseport) {
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177 struct sockaddr_in addr;
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178 int r;
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179 int i;
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180
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181 r = uv_mutex_init(&mutex);
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182 ASSERT_OK(r);
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183
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184 r = uv_sem_init(&semaphore, 0);
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185 ASSERT_OK(r);
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186
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187 main_loop = uv_default_loop();
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188 ASSERT_NOT_NULL(main_loop);
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189
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190 /* Run event loops of listeners in separate threads. */
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191 uv_loop_init(&thread_loop1);
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192 uv_loop_init(&thread_loop2);
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193 uv_thread_t thread_loop_id1;
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194 uv_thread_t thread_loop_id2;
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195 uv_thread_create(&thread_loop_id1, run_event_loop, &thread_loop1);
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196 uv_thread_create(&thread_loop_id2, run_event_loop, &thread_loop2);
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197
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198 /* Wait until all threads to poll for accepting connections
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199 * before we start to connect. Otherwise the incoming connections
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200 * might not be distributed across all listening threads. */
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201 for (i = 0; i < NUM_LISTENING_THREADS; i++)
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202 uv_sem_wait(&semaphore);
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203 /* Now we know all threads are up and entering the uv_run(),
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204 * but we still sleep a little bit just for dual fail-safe. */
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205 uv_sleep(100);
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206
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207 /* Start connecting to the peers. */
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208 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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209 for (i = 0; i < MAX_TCP_CLIENTS; i++) {
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210 r = uv_tcp_init(main_loop, &tcp_connect_handles[i]);
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211 ASSERT_OK(r);
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212 r = uv_tcp_connect(&tcp_connect_requests[i],
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213 &tcp_connect_handles[i],
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214 (const struct sockaddr*) &addr,
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215 on_connect);
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216 ASSERT_OK(r);
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217 }
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218
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219 r = uv_run(main_loop, UV_RUN_DEFAULT);
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220 ASSERT_OK(r);
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221
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222 /* Wait for all threads to exit. */
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223 uv_thread_join(&thread_loop_id1);
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224 uv_thread_join(&thread_loop_id2);
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225
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226 /* Verify if each listener per event loop accepted connections
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227 * and the amount of accepted connections matches the one of
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228 * connected connections.
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229 */
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230 ASSERT_EQ(accepted, MAX_TCP_CLIENTS);
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231 ASSERT_EQ(connected, MAX_TCP_CLIENTS);
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232 ASSERT_GT(thread_loop1_accepted, 0);
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233 ASSERT_GT(thread_loop2_accepted, 0);
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234 ASSERT_EQ(thread_loop1_accepted + thread_loop2_accepted, connected);
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235
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236 /* Clean up. */
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237 uv_mutex_destroy(&mutex);
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238
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239 uv_sem_destroy(&semaphore);
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240
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241 uv_loop_close(&thread_loop1);
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242 uv_loop_close(&thread_loop2);
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243 MAKE_VALGRIND_HAPPY(main_loop);
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244
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245 return 0;
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246 }
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247
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248 #endif
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