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160
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1 /* Copyright libuv project and 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 #define CHECK_HANDLE(handle) \
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30 ASSERT_NE((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client, 0)
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31
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32 static uv_udp_t server;
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33 static uv_udp_t client;
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34 static uv_buf_t buf;
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35 static struct sockaddr_in lo_addr;
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36
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37 static int cl_send_cb_called;
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38 static int sv_recv_cb_called;
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39
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40 static int close_cb_called;
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41
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42
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43 static void alloc_cb(uv_handle_t* handle,
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44 size_t suggested_size,
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45 uv_buf_t* buf) {
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46 static char slab[65536];
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47 CHECK_HANDLE(handle);
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48 ASSERT_LE(suggested_size, sizeof(slab));
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49 buf->base = slab;
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50 buf->len = sizeof(slab);
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51 }
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52
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53
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54 static void close_cb(uv_handle_t* handle) {
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55 CHECK_HANDLE(handle);
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56 ASSERT(uv_is_closing(handle));
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57 close_cb_called++;
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58 }
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59
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60
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61 static void cl_send_cb(uv_udp_send_t* req, int status) {
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62 int r;
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63
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64 ASSERT_NOT_NULL(req);
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65 ASSERT_OK(status);
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66 CHECK_HANDLE(req->handle);
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67 if (++cl_send_cb_called == 1) {
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68 uv_udp_connect(&client, NULL);
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69 r = uv_udp_send(req, &client, &buf, 1, NULL, cl_send_cb);
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70 ASSERT_EQ(r, UV_EDESTADDRREQ);
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71 r = uv_udp_send(req,
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72 &client,
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73 &buf,
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74 1,
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75 (const struct sockaddr*) &lo_addr,
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76 cl_send_cb);
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77 ASSERT_OK(r);
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78 }
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79
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80 }
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81
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82
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83 static void sv_recv_cb(uv_udp_t* handle,
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84 ssize_t nread,
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85 const uv_buf_t* rcvbuf,
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86 const struct sockaddr* addr,
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87 unsigned flags) {
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88 if (nread > 0) {
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89 ASSERT_EQ(4, nread);
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90 ASSERT_NOT_NULL(addr);
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91 ASSERT_OK(memcmp("EXIT", rcvbuf->base, nread));
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92 if (++sv_recv_cb_called == 4) {
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93 uv_close((uv_handle_t*) &server, close_cb);
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94 uv_close((uv_handle_t*) &client, close_cb);
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95 }
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96 }
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97 }
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98
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99
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100 TEST_IMPL(udp_connect) {
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101 #if defined(__OpenBSD__)
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102 RETURN_SKIP("Test does not currently work in OpenBSD");
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103 #endif
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104 uv_udp_send_t req;
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105 struct sockaddr_in ext_addr;
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106 struct sockaddr_in tmp_addr;
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107 int r;
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108 int addrlen;
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109
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110 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &lo_addr));
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111
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112 r = uv_udp_init(uv_default_loop(), &server);
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113 ASSERT_OK(r);
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114
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115 r = uv_udp_bind(&server, (const struct sockaddr*) &lo_addr, 0);
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116 ASSERT_OK(r);
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117
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118 r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
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119 ASSERT_OK(r);
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120
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121 r = uv_udp_init(uv_default_loop(), &client);
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122 ASSERT_OK(r);
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123
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124 buf = uv_buf_init("EXIT", 4);
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125
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126 /* connect() to INADDR_ANY fails on Windows with WSAEADDRNOTAVAIL */
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127 ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &tmp_addr));
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128 r = uv_udp_connect(&client, (const struct sockaddr*) &tmp_addr);
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129 #ifdef _WIN32
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130 ASSERT_EQ(r, UV_EADDRNOTAVAIL);
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131 #else
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132 ASSERT_OK(r);
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133 r = uv_udp_connect(&client, NULL);
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134 ASSERT_OK(r);
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135 #endif
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136
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137 ASSERT_OK(uv_ip4_addr("8.8.8.8", TEST_PORT, &ext_addr));
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138 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &lo_addr));
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139
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140 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
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141 ASSERT_OK(r);
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142 r = uv_udp_connect(&client, (const struct sockaddr*) &ext_addr);
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143 ASSERT_EQ(r, UV_EISCONN);
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144
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145 addrlen = sizeof(tmp_addr);
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146 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
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147 ASSERT_OK(r);
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148
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149 /* To send messages in connected UDP sockets addr must be NULL */
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150 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
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151 ASSERT_EQ(r, UV_EISCONN);
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152 r = uv_udp_try_send(&client, &buf, 1, NULL);
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153 ASSERT_EQ(4, r);
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154 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &ext_addr);
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155 ASSERT_EQ(r, UV_EISCONN);
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156
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157 r = uv_udp_connect(&client, NULL);
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158 ASSERT_OK(r);
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159 r = uv_udp_connect(&client, NULL);
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160 ASSERT_EQ(r, UV_ENOTCONN);
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161
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162 addrlen = sizeof(tmp_addr);
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163 r = uv_udp_getpeername(&client, (struct sockaddr*) &tmp_addr, &addrlen);
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164 ASSERT_EQ(r, UV_ENOTCONN);
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165
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166 /* To send messages in disconnected UDP sockets addr must be set */
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167 r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &lo_addr);
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168 ASSERT_EQ(4, r);
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169 r = uv_udp_try_send(&client, &buf, 1, NULL);
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170 ASSERT_EQ(r, UV_EDESTADDRREQ);
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171
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172
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173 r = uv_udp_connect(&client, (const struct sockaddr*) &lo_addr);
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174 ASSERT_OK(r);
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175 r = uv_udp_send(&req,
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176 &client,
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177 &buf,
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178 1,
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179 (const struct sockaddr*) &lo_addr,
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180 cl_send_cb);
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181 ASSERT_EQ(r, UV_EISCONN);
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182 r = uv_udp_send(&req, &client, &buf, 1, NULL, cl_send_cb);
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183 ASSERT_OK(r);
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184
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185 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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186
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187 ASSERT_EQ(2, close_cb_called);
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188 ASSERT_EQ(4, sv_recv_cb_called);
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189 ASSERT_EQ(2, cl_send_cb_called);
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190
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191 ASSERT_OK(client.send_queue_size);
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192 ASSERT_OK(server.send_queue_size);
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193
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194 MAKE_VALGRIND_HAPPY(uv_default_loop());
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195 return 0;
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196 }
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