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160
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1 /* Copyright Joyent, Inc. and other Node 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(__FreeBSD__) || defined(__NetBSD__)
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30 #include <sys/sysctl.h>
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31 #endif
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32
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33 #define CHECK_HANDLE(handle) \
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34 ASSERT_NE((uv_udp_t*)(handle) == &server \
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35 || (uv_udp_t*)(handle) == &client \
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36 || (uv_timer_t*)(handle) == &timeout, 0)
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37
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38 #define CHECK_REQ(req) \
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39 ASSERT_PTR_EQ((req), &req_);
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40
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41 static uv_udp_t client;
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42 static uv_udp_t server;
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43 static uv_udp_send_t req_;
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44 static char data[10];
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45 static uv_timer_t timeout;
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46
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47 static int send_cb_called;
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48 static int recv_cb_called;
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49 static int close_cb_called;
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50 static uint16_t client_port;
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51
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52 #if defined(__FreeBSD__) || defined(__NetBSD__)
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53 static int can_ipv6_ipv4_dual(void) {
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54 int v6only;
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55 size_t size = sizeof(int);
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56
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57 if (sysctlbyname("net.inet6.ip6.v6only", &v6only, &size, NULL, 0))
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58 return 0;
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59
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60 return v6only != 1;
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61 }
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62 #endif
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63
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64
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65 static void alloc_cb(uv_handle_t* handle,
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66 size_t suggested_size,
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67 uv_buf_t* buf) {
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68 static char slab[65536];
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69 CHECK_HANDLE(handle);
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70 buf->base = slab;
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71 buf->len = sizeof(slab);
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72 }
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73
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74
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75 static void close_cb(uv_handle_t* handle) {
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76 CHECK_HANDLE(handle);
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77 close_cb_called++;
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78 }
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79
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80
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81 static void send_cb(uv_udp_send_t* req, int status) {
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82 CHECK_REQ(req);
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83 CHECK_HANDLE(req->handle);
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84 ASSERT_OK(status);
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85 send_cb_called++;
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86 }
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87
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88 static int is_from_client(const struct sockaddr* addr) {
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89 const struct sockaddr_in6* addr6;
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90 char dst[256];
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91 int r;
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92
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93 /* Debugging output, and filter out unwanted network traffic */
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94 if (addr != NULL) {
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95 ASSERT_EQ(addr->sa_family, AF_INET6);
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96 addr6 = (struct sockaddr_in6*) addr;
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97 r = uv_inet_ntop(addr->sa_family, &addr6->sin6_addr, dst, sizeof(dst));
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98 if (r == 0)
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99 printf("from [%.*s]:%d\n", (int) sizeof(dst), dst, addr6->sin6_port);
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100 if (addr6->sin6_port != client_port)
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101 return 0;
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102 if (r != 0 || strcmp(dst, "::ffff:127.0.0.1"))
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103 return 0;
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104 }
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105 return 1;
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106 }
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107
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108
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109 static void ipv6_recv_fail(uv_udp_t* handle,
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110 ssize_t nread,
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111 const uv_buf_t* buf,
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112 const struct sockaddr* addr,
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113 unsigned flags) {
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114 printf("got %d %.*s\n", (int) nread, nread > 0 ? (int) nread : 0, buf->base);
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115 if (!is_from_client(addr) || (nread == 0 && addr == NULL))
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116 return;
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117 ASSERT(0 && "this function should not have been called");
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118 }
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119
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120
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121 static void ipv6_recv_ok(uv_udp_t* handle,
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122 ssize_t nread,
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123 const uv_buf_t* buf,
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124 const struct sockaddr* addr,
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125 unsigned flags) {
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126 CHECK_HANDLE(handle);
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127
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128 printf("got %d %.*s\n", (int) nread, nread > 0 ? (int) nread : 0, buf->base);
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129 if (!is_from_client(addr) || (nread == 0 && addr == NULL))
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130 return;
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131
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132 ASSERT_EQ(9, nread);
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133 ASSERT(!memcmp(buf->base, data, 9));
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134 recv_cb_called++;
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135 }
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136
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137
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138 static void timeout_cb(uv_timer_t* timer) {
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139 uv_close((uv_handle_t*)&server, close_cb);
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140 uv_close((uv_handle_t*)&client, close_cb);
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141 uv_close((uv_handle_t*)&timeout, close_cb);
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142 }
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143
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144
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145 static void do_test(uv_udp_recv_cb recv_cb, int bind_flags) {
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146 struct sockaddr_in6 addr6;
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147 struct sockaddr_in addr;
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148 int addr6_len;
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149 int addr_len;
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150 uv_buf_t buf;
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151 char dst[256];
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152 int r;
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153
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154 ASSERT_OK(uv_ip6_addr("::0", TEST_PORT, &addr6));
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155
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156 r = uv_udp_init(uv_default_loop(), &server);
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157 ASSERT_OK(r);
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158
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159 r = uv_udp_bind(&server, (const struct sockaddr*) &addr6, bind_flags);
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160 ASSERT_OK(r);
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161
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162 addr6_len = sizeof(addr6);
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163 ASSERT_OK(uv_udp_getsockname(&server,
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164 (struct sockaddr*) &addr6,
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165 &addr6_len));
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166 ASSERT_OK(uv_inet_ntop(addr6.sin6_family,
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167 &addr6.sin6_addr,
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168 dst,
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169 sizeof(dst)));
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170 printf("on [%.*s]:%d\n", (int) sizeof(dst), dst, addr6.sin6_port);
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171
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172 r = uv_udp_recv_start(&server, alloc_cb, recv_cb);
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173 ASSERT_OK(r);
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174
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175 r = uv_udp_init(uv_default_loop(), &client);
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176 ASSERT_OK(r);
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177
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178 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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179 ASSERT_OK(uv_inet_ntop(addr.sin_family, &addr.sin_addr, dst, sizeof(dst)));
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180 printf("to [%.*s]:%d\n", (int) sizeof(dst), dst, addr.sin_port);
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181
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182 /* Create some unique data to send */
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183 ASSERT_EQ(9, snprintf(data,
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184 sizeof(data),
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185 "PING%5u",
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186 uv_os_getpid() & 0xFFFF));
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187 buf = uv_buf_init(data, 9);
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188 printf("sending %s\n", data);
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189
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190 r = uv_udp_send(&req_,
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191 &client,
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192 &buf,
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193 1,
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194 (const struct sockaddr*) &addr,
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195 send_cb);
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196 ASSERT_OK(r);
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197
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198 addr_len = sizeof(addr);
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199 ASSERT_OK(uv_udp_getsockname(&client, (struct sockaddr*) &addr, &addr_len));
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200 ASSERT_OK(uv_inet_ntop(addr.sin_family, &addr.sin_addr, dst, sizeof(dst)));
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201 printf("from [%.*s]:%d\n", (int) sizeof(dst), dst, addr.sin_port);
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202 client_port = addr.sin_port;
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203
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204 r = uv_timer_init(uv_default_loop(), &timeout);
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205 ASSERT_OK(r);
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206
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207 r = uv_timer_start(&timeout, timeout_cb, 500, 0);
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208 ASSERT_OK(r);
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209
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210 ASSERT_OK(close_cb_called);
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211 ASSERT_OK(send_cb_called);
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212 ASSERT_OK(recv_cb_called);
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213
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214 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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215
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216 ASSERT_EQ(3, close_cb_called);
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217
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218 MAKE_VALGRIND_HAPPY(uv_default_loop());
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219 }
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220
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221
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222 TEST_IMPL(udp_dual_stack) {
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223 #if defined(__CYGWIN__) || defined(__MSYS__)
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224 /* FIXME: Does Cygwin support this? */
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225 RETURN_SKIP("FIXME: This test needs more investigation on Cygwin");
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226 #endif
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227
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228 if (!can_ipv6())
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229 RETURN_SKIP("IPv6 not supported");
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230
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231 #if defined(__FreeBSD__) || defined(__NetBSD__)
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232 if (!can_ipv6_ipv4_dual())
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233 RETURN_SKIP("IPv6-IPv4 dual stack not supported");
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234 #elif defined(__OpenBSD__)
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235 RETURN_SKIP("IPv6-IPv4 dual stack not supported");
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236 #endif
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237
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238 do_test(ipv6_recv_ok, 0);
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239
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240 printf("recv_cb_called %d\n", recv_cb_called);
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241 printf("send_cb_called %d\n", send_cb_called);
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242 ASSERT_EQ(1, recv_cb_called);
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243 ASSERT_EQ(1, send_cb_called);
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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
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249 TEST_IMPL(udp_ipv6_only) {
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250 if (!can_ipv6())
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251 RETURN_SKIP("IPv6 not supported");
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252
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253 do_test(ipv6_recv_fail, UV_UDP_IPV6ONLY);
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254
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255 ASSERT_OK(recv_cb_called);
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256 ASSERT_EQ(1, send_cb_called);
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257
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258 return 0;
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259 }
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