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160
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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 #if !defined(_WIN32)
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23
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24 #include "uv.h"
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25 #include "task.h"
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26
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27 #include <errno.h>
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28 #include <sys/socket.h>
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29 #include <sys/ioctl.h>
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30 #include <unistd.h>
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31 #include <string.h>
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32
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33 static uv_tcp_t server_handle;
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34 static uv_tcp_t client_handle;
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35 static uv_tcp_t peer_handle;
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36 static uv_poll_t poll_req[2];
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37 static uv_idle_t idle;
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38 static uv_os_fd_t client_fd;
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39 static uv_os_fd_t server_fd;
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40 static int ticks;
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41 static const int kMaxTicks = 10;
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42 static int cli_pr_check = 0;
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43 static int cli_rd_check = 0;
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44 static int srv_rd_check = 0;
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45
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46 static int got_eagain(void) {
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47 return errno == EAGAIN
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48 || errno == EINPROGRESS
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49 #ifdef EWOULDBLOCK
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50 || errno == EWOULDBLOCK
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51 #endif
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52 ;
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53 }
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54
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55 static void idle_cb(uv_idle_t* idle) {
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56 uv_sleep(100);
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57 if (++ticks < kMaxTicks)
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58 return;
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59
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60 uv_poll_stop(&poll_req[0]);
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61 uv_poll_stop(&poll_req[1]);
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62 uv_close((uv_handle_t*) &server_handle, NULL);
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63 uv_close((uv_handle_t*) &client_handle, NULL);
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64 uv_close((uv_handle_t*) &peer_handle, NULL);
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65 uv_close((uv_handle_t*) idle, NULL);
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66 }
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67
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68 static void poll_cb(uv_poll_t* handle, int status, int events) {
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69 char buffer[5];
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70 int n;
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71 int fd;
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72
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73 ASSERT_OK(uv_fileno((uv_handle_t*)handle, &fd));
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74 memset(buffer, 0, 5);
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75
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76 if (events & UV_PRIORITIZED) {
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77 do
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78 n = recv(client_fd, &buffer, 5, MSG_OOB);
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79 while (n == -1 && errno == EINTR);
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80 ASSERT(n >= 0 || errno != EINVAL);
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81 cli_pr_check = 1;
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82 ASSERT_OK(uv_poll_stop(&poll_req[0]));
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83 ASSERT_OK(uv_poll_start(&poll_req[0],
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84 UV_READABLE | UV_WRITABLE,
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85 poll_cb));
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86 }
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87 if (events & UV_READABLE) {
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88 if (fd == client_fd) {
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89 do
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90 n = recv(client_fd, &buffer, 5, 0);
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91 while (n == -1 && errno == EINTR);
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92 ASSERT(n >= 0 || errno != EINVAL);
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93 if (cli_rd_check == 1) {
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94 ASSERT_OK(strncmp(buffer, "world", n));
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95 ASSERT_EQ(5, n);
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96 cli_rd_check = 2;
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97 }
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98 if (cli_rd_check == 0) {
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99 ASSERT_EQ(4, n);
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100 ASSERT_OK(strncmp(buffer, "hello", n));
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101 cli_rd_check = 1;
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102 do {
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103 do
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104 n = recv(server_fd, &buffer, 5, 0);
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105 while (n == -1 && errno == EINTR);
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106 if (n > 0) {
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107 ASSERT_EQ(5, n);
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108 ASSERT_OK(strncmp(buffer, "world", n));
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109 cli_rd_check = 2;
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110 }
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111 } while (n > 0);
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112
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113 ASSERT(got_eagain());
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114 }
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115 }
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116 if (fd == server_fd) {
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117 do
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118 n = recv(server_fd, &buffer, 3, 0);
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119 while (n == -1 && errno == EINTR);
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120 ASSERT(n >= 0 || errno != EINVAL);
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121 ASSERT_EQ(3, n);
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122 ASSERT_OK(strncmp(buffer, "foo", n));
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123 srv_rd_check = 1;
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124 uv_poll_stop(&poll_req[1]);
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125 }
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126 }
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127 if (events & UV_WRITABLE) {
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128 do {
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129 n = send(client_fd, "foo", 3, 0);
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130 } while (n < 0 && errno == EINTR);
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131 ASSERT_EQ(3, n);
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132 }
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133 }
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134
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135 static void connection_cb(uv_stream_t* handle, int status) {
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136 int r;
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137
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138 ASSERT_OK(status);
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139 ASSERT_OK(uv_accept(handle, (uv_stream_t*) &peer_handle));
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140 ASSERT_OK(uv_fileno((uv_handle_t*) &peer_handle, &server_fd));
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141 ASSERT_OK(uv_poll_init_socket(uv_default_loop(),
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142 &poll_req[0],
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143 client_fd));
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144 ASSERT_OK(uv_poll_init_socket(uv_default_loop(),
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145 &poll_req[1],
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146 server_fd));
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147 ASSERT_OK(uv_poll_start(&poll_req[0],
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148 UV_PRIORITIZED | UV_READABLE | UV_WRITABLE,
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149 poll_cb));
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150 ASSERT_OK(uv_poll_start(&poll_req[1],
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151 UV_READABLE,
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152 poll_cb));
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153 do {
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154 r = send(server_fd, "hello", 5, MSG_OOB);
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155 } while (r < 0 && errno == EINTR);
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156 ASSERT_EQ(5, r);
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157
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158 do {
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159 r = send(server_fd, "world", 5, 0);
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160 } while (r < 0 && errno == EINTR);
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161 ASSERT_EQ(5, r);
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162
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163 ASSERT_OK(uv_idle_start(&idle, idle_cb));
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164 }
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165
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166
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167 TEST_IMPL(poll_oob) {
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168 struct sockaddr_in addr;
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169 int r = 0;
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170 uv_loop_t* loop;
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171
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172 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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173 loop = uv_default_loop();
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174
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175 ASSERT_OK(uv_tcp_init(loop, &server_handle));
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176 ASSERT_OK(uv_tcp_init(loop, &client_handle));
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177 ASSERT_OK(uv_tcp_init(loop, &peer_handle));
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178 ASSERT_OK(uv_idle_init(loop, &idle));
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179 ASSERT_OK(uv_tcp_bind(&server_handle, (const struct sockaddr*) &addr, 0));
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180 ASSERT_OK(uv_listen((uv_stream_t*) &server_handle, 1, connection_cb));
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181
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182 /* Ensure two separate packets */
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183 ASSERT_OK(uv_tcp_nodelay(&client_handle, 1));
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184
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185 client_fd = socket(PF_INET, SOCK_STREAM, 0);
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186 ASSERT_GE(client_fd, 0);
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187 do {
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188 errno = 0;
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189 r = connect(client_fd, (const struct sockaddr*)&addr, sizeof(addr));
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190 } while (r == -1 && errno == EINTR);
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191 ASSERT_OK(r);
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192
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193 ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
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194
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195 ASSERT_EQ(ticks, kMaxTicks);
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196
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197 /* Did client receive the POLLPRI message */
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198 ASSERT_EQ(1, cli_pr_check);
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199 /* Did client receive the POLLIN message */
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200 ASSERT_EQ(2, cli_rd_check);
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201 /* Could we write with POLLOUT and did the server receive our POLLOUT message
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202 * through POLLIN.
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203 */
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204 ASSERT_EQ(1, srv_rd_check);
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205
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206 MAKE_VALGRIND_HAPPY(loop);
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207 return 0;
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208 }
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209
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210 #else
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211
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212 typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
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213
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214 #endif
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