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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 <errno.h>
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26 #include <string.h> /* memset */
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27
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28 #ifdef _WIN32
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29 # define INVALID_FD (INVALID_HANDLE_VALUE)
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30 #else
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31 # define INVALID_FD (-1)
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32 #endif
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33
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34 static uv_loop_t* loop;
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35 static uv_tcp_t tcp_server;
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36 static uv_tcp_t tcp_client;
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37 static uv_tcp_t tcp_accepted;
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38 static uv_connect_t connect_req;
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39 static uv_shutdown_t shutdown_req;
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40 static uv_write_t write_reqs[4];
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41
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42 static int client_close;
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43 static int shutdown_before_close;
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44
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45 static int write_cb_called;
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46 static int close_cb_called;
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47 static int shutdown_cb_called;
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48
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49 static void connect_cb(uv_connect_t* req, int status);
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50 static void write_cb(uv_write_t* req, int status);
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51 static void close_cb(uv_handle_t* handle);
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52 static void shutdown_cb(uv_shutdown_t* req, int status);
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53
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54 static int read_size;
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55
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56
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57 static void do_write(uv_tcp_t* handle) {
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58 uv_buf_t buf;
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59 unsigned i;
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60 int r;
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61
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62 buf = uv_buf_init("PING", 4);
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63 for (i = 0; i < ARRAY_SIZE(write_reqs); i++) {
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64 r = uv_write(&write_reqs[i], (uv_stream_t*) handle, &buf, 1, write_cb);
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65 ASSERT_OK(r);
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66 }
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67 }
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68
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69
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70 static void do_close(uv_tcp_t* handle) {
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71 uv_os_fd_t fd;
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72 int r;
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73
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74 if (shutdown_before_close == 1) {
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75 ASSERT_OK(uv_shutdown(&shutdown_req,
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76 (uv_stream_t*) handle,
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77 shutdown_cb));
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78 ASSERT_EQ(UV_EINVAL, uv_tcp_close_reset(handle, close_cb));
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79 } else if (shutdown_before_close == 2) {
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80 r = uv_fileno((const uv_handle_t*) handle, &fd);
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81 ASSERT_OK(r);
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82 #ifdef _WIN32
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83 ASSERT_PTR_NE(fd, INVALID_FD);
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84 ASSERT_OK(shutdown((SOCKET)fd, SD_BOTH));
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85 #else
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86 ASSERT_NE(fd, INVALID_FD);
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87 ASSERT_OK(shutdown(fd, SHUT_RDWR));
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88 #endif
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89 ASSERT_OK(uv_tcp_close_reset(handle, close_cb));
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90 } else {
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91 ASSERT_OK(uv_tcp_close_reset(handle, close_cb));
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92 ASSERT_EQ(UV_ENOTCONN, uv_shutdown(&shutdown_req, (uv_stream_t*) handle,
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93 shutdown_cb));
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94 }
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95
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96 uv_close((uv_handle_t*) &tcp_server, NULL);
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97 }
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98
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99 static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
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100 static char slab[1024];
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101 buf->base = slab;
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102 buf->len = sizeof(slab);
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103 }
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104
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105 static void read_cb2(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
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106 ASSERT_PTR_EQ((uv_tcp_t*)stream, &tcp_client);
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107 if (nread == UV_EOF)
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108 uv_close((uv_handle_t*) stream, NULL);
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109 }
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110
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111
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112 static void connect_cb(uv_connect_t* conn_req, int status) {
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113 ASSERT_PTR_EQ(conn_req, &connect_req);
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114 uv_read_start((uv_stream_t*) &tcp_client, alloc_cb, read_cb2);
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115 do_write(&tcp_client);
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116 if (client_close)
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117 do_close(&tcp_client);
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118 }
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119
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120
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121 static void write_cb(uv_write_t* req, int status) {
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122 /* write callbacks should run before the close callback */
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123 ASSERT_OK(close_cb_called);
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124 ASSERT_PTR_EQ(req->handle, (uv_stream_t*)&tcp_client);
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125 write_cb_called++;
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126 }
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127
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128
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129 static void close_cb(uv_handle_t* handle) {
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130 if (client_close)
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131 ASSERT_PTR_EQ(handle, (uv_handle_t*) &tcp_client);
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132 else
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133 ASSERT_PTR_EQ(handle, (uv_handle_t*) &tcp_accepted);
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134
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135 close_cb_called++;
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136 }
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137
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138 static void shutdown_cb(uv_shutdown_t* req, int status) {
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139 if (client_close)
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140 ASSERT_PTR_EQ(req->handle, (uv_stream_t*) &tcp_client);
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141 else
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142 ASSERT_PTR_EQ(req->handle, (uv_stream_t*) &tcp_accepted);
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143
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144 shutdown_cb_called++;
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145 }
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146
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147
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148 static void read_cb(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
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149 ASSERT_PTR_EQ((uv_tcp_t*)stream, &tcp_accepted);
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150 if (nread < 0) {
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151 uv_close((uv_handle_t*) stream, NULL);
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152 } else {
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153 read_size += nread;
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154 if (read_size == 16 && client_close == 0)
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155 do_close(&tcp_accepted);
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156 }
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157 }
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158
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159
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160 static void connection_cb(uv_stream_t* server, int status) {
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161 ASSERT_OK(status);
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162
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163 ASSERT_OK(uv_tcp_init(loop, &tcp_accepted));
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164 ASSERT_OK(uv_accept(server, (uv_stream_t*) &tcp_accepted));
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165
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166 uv_read_start((uv_stream_t*) &tcp_accepted, alloc_cb, read_cb);
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167 }
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168
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169
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170 static void start_server(uv_loop_t* loop, uv_tcp_t* handle) {
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171 struct sockaddr_in addr;
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172 int r;
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173
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174 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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175
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176 r = uv_tcp_init(loop, handle);
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177 ASSERT_OK(r);
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178
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179 r = uv_tcp_bind(handle, (const struct sockaddr*) &addr, 0);
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180 ASSERT_OK(r);
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181
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182 r = uv_listen((uv_stream_t*)handle, 128, connection_cb);
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183 ASSERT_OK(r);
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184 }
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185
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186
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187 static void do_connect(uv_loop_t* loop, uv_tcp_t* tcp_client) {
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188 struct sockaddr_in addr;
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189 int r;
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190
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191 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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192
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193 r = uv_tcp_init(loop, tcp_client);
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194 ASSERT_OK(r);
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195
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196 r = uv_tcp_connect(&connect_req,
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197 tcp_client,
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198 (const struct sockaddr*) &addr,
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199 connect_cb);
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200 ASSERT_OK(r);
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201 }
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202
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203
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204 /* Check that pending write requests have their callbacks
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205 * invoked when the handle is closed.
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206 */
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207 TEST_IMPL(tcp_close_reset_client) {
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208 int r;
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209
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210 loop = uv_default_loop();
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211
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212 start_server(loop, &tcp_server);
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213
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214 client_close = 1;
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215 shutdown_before_close = 0;
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216
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217 do_connect(loop, &tcp_client);
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218
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219 ASSERT_OK(write_cb_called);
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220 ASSERT_OK(close_cb_called);
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221 ASSERT_OK(shutdown_cb_called);
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222
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223 r = uv_run(loop, UV_RUN_DEFAULT);
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224 ASSERT_OK(r);
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225
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226 ASSERT_EQ(4, write_cb_called);
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227 ASSERT_EQ(1, close_cb_called);
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228 ASSERT_OK(shutdown_cb_called);
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229
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230 MAKE_VALGRIND_HAPPY(loop);
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231 return 0;
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232 }
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233
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234 TEST_IMPL(tcp_close_reset_client_after_shutdown) {
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235 int r;
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236
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237 loop = uv_default_loop();
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238
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239 start_server(loop, &tcp_server);
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240
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241 client_close = 1;
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242 shutdown_before_close = 1;
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243
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244 do_connect(loop, &tcp_client);
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245
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246 ASSERT_OK(write_cb_called);
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247 ASSERT_OK(close_cb_called);
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248 ASSERT_OK(shutdown_cb_called);
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249
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250 r = uv_run(loop, UV_RUN_DEFAULT);
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251 ASSERT_OK(r);
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252
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253 ASSERT_EQ(4, write_cb_called);
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254 ASSERT_OK(close_cb_called);
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255 ASSERT_EQ(1, shutdown_cb_called);
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256
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257 MAKE_VALGRIND_HAPPY(loop);
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258 return 0;
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259 }
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260
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261 TEST_IMPL(tcp_close_reset_accepted) {
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262 int r;
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263
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264 loop = uv_default_loop();
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265
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266 start_server(loop, &tcp_server);
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267
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268 client_close = 0;
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269 shutdown_before_close = 0;
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270
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271 do_connect(loop, &tcp_client);
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272
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273 ASSERT_OK(write_cb_called);
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274 ASSERT_OK(close_cb_called);
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275 ASSERT_OK(shutdown_cb_called);
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276
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277 r = uv_run(loop, UV_RUN_DEFAULT);
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278 ASSERT_OK(r);
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279
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280 ASSERT_EQ(4, write_cb_called);
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281 ASSERT_EQ(1, close_cb_called);
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282 ASSERT_OK(shutdown_cb_called);
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283
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284 MAKE_VALGRIND_HAPPY(loop);
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285 return 0;
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286 }
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287
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288 TEST_IMPL(tcp_close_reset_accepted_after_shutdown) {
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289 int r;
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290
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291 loop = uv_default_loop();
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292
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293 start_server(loop, &tcp_server);
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294
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295 client_close = 0;
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296 shutdown_before_close = 1;
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297
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298 do_connect(loop, &tcp_client);
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299
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300 ASSERT_OK(write_cb_called);
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301 ASSERT_OK(close_cb_called);
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302 ASSERT_OK(shutdown_cb_called);
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303
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304 r = uv_run(loop, UV_RUN_DEFAULT);
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305 ASSERT_OK(r);
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306
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307 ASSERT_EQ(4, write_cb_called);
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308 ASSERT_OK(close_cb_called);
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309 ASSERT_EQ(1, shutdown_cb_called);
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310
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311 MAKE_VALGRIND_HAPPY(loop);
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312 return 0;
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313 }
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314
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315 TEST_IMPL(tcp_close_reset_accepted_after_socket_shutdown) {
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316 int r;
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317
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318 loop = uv_default_loop();
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319
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320 start_server(loop, &tcp_server);
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321
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322 client_close = 0;
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323 shutdown_before_close = 2;
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324
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325 do_connect(loop, &tcp_client);
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326
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327 ASSERT_OK(write_cb_called);
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328 ASSERT_OK(close_cb_called);
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329 ASSERT_OK(shutdown_cb_called);
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330
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331 r = uv_run(loop, UV_RUN_DEFAULT);
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332 ASSERT_OK(r);
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333
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334 ASSERT_EQ(4, write_cb_called);
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335 ASSERT_EQ(1, close_cb_called);
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336 ASSERT_OK(shutdown_cb_called);
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337
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338 MAKE_VALGRIND_HAPPY(loop);
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339 return 0;
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340 }
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