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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> /* strlen */
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28
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29 static int completed_pingers = 0;
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30
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31 #if defined(__CYGWIN__) || defined(__MSYS__) || defined(__MVS__)
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32 #define NUM_PINGS 100 /* fewer pings to avoid timeout */
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33 #else
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34 #define NUM_PINGS 1000
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35 #endif
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36
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37 static char PING[] = "PING\n";
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38 static char PONG[] = "PONG\n";
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39 static int pinger_on_connect_count;
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40
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41
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42 typedef struct {
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43 int vectored_writes;
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44 unsigned pongs;
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45 unsigned state;
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46 union {
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47 uv_tcp_t tcp;
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48 uv_pipe_t pipe;
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49 } stream;
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50 uv_connect_t connect_req;
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51 char* pong;
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52 } pinger_t;
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53
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54
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55 static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
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56 buf->base = malloc(size);
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57 buf->len = size;
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58 }
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59
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60
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61 static void ponger_on_close(uv_handle_t* handle) {
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62 if (handle->data)
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63 free(handle->data);
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64 else
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65 free(handle);
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66 }
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67
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68
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69 static void pinger_on_close(uv_handle_t* handle) {
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70 pinger_t* pinger = (pinger_t*) handle->data;
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71
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72 ASSERT_EQ(NUM_PINGS, pinger->pongs);
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73
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74 if (handle == (uv_handle_t*) &pinger->stream.tcp) {
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75 free(pinger); /* also frees handle */
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76 } else {
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77 uv_close((uv_handle_t*) &pinger->stream.tcp, ponger_on_close);
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78 free(handle);
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79 }
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80
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81 completed_pingers++;
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82 }
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83
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84
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85 static void pinger_after_write(uv_write_t* req, int status) {
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86 ASSERT_OK(status);
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87 free(req->data);
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88 free(req);
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89 }
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90
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91
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92 static void pinger_write_ping(pinger_t* pinger) {
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93 uv_stream_t* stream;
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94 uv_write_t* req;
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95 uv_buf_t bufs[sizeof PING - 1];
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96 int i, nbufs;
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97
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98 stream = (uv_stream_t*) &pinger->stream.tcp;
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99
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100 if (!pinger->vectored_writes) {
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101 /* Write a single buffer. */
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102 nbufs = 1;
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103 bufs[0] = uv_buf_init(PING, sizeof PING - 1);
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104 } else {
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105 /* Write multiple buffers, each with one byte in them. */
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106 nbufs = sizeof PING - 1;
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107 for (i = 0; i < nbufs; i++) {
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108 bufs[i] = uv_buf_init(&PING[i], 1);
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109 }
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110 }
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111
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112 req = malloc(sizeof(*req));
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113 ASSERT_NOT_NULL(req);
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114 req->data = NULL;
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115 ASSERT_OK(uv_write(req, stream, bufs, nbufs, pinger_after_write));
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116
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117 puts("PING");
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118 }
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119
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120
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121 static void pinger_read_cb(uv_stream_t* stream,
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122 ssize_t nread,
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123 const uv_buf_t* buf) {
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124 ssize_t i;
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125 pinger_t* pinger;
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126
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127 pinger = (pinger_t*) stream->data;
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128
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129 if (nread < 0) {
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130 ASSERT_EQ(nread, UV_EOF);
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131
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132 puts("got EOF");
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133 free(buf->base);
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134
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135 uv_close((uv_handle_t*) stream, pinger_on_close);
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136
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137 return;
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138 }
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139
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140 /* Now we count the pongs */
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141 for (i = 0; i < nread; i++) {
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142 ASSERT_EQ(buf->base[i], pinger->pong[pinger->state]);
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143 pinger->state = (pinger->state + 1) % strlen(pinger->pong);
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144
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145 if (pinger->state != 0)
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146 continue;
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147
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148 printf("PONG %d\n", pinger->pongs);
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149 pinger->pongs++;
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150
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151 if (pinger->pongs < NUM_PINGS) {
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152 pinger_write_ping(pinger);
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153 } else {
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154 uv_close((uv_handle_t*) stream, pinger_on_close);
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155 break;
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156 }
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157 }
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158
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159 free(buf->base);
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160 }
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161
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162
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163 static void ponger_read_cb(uv_stream_t* stream,
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164 ssize_t nread,
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165 const uv_buf_t* buf) {
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166 uv_buf_t writebuf;
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167 uv_write_t* req;
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168 int i;
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169
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170 if (nread < 0) {
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171 ASSERT_EQ(nread, UV_EOF);
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172
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173 puts("got EOF");
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174 free(buf->base);
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175
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176 uv_close((uv_handle_t*) stream, ponger_on_close);
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177
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178 return;
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179 }
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180
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181 /* Echo back */
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182 for (i = 0; i < nread; i++) {
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183 if (buf->base[i] == 'I')
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184 buf->base[i] = 'O';
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185 }
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186
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187 writebuf = uv_buf_init(buf->base, nread);
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188 req = malloc(sizeof(*req));
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189 ASSERT_NOT_NULL(req);
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190 req->data = buf->base;
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191 ASSERT_OK(uv_write(req, stream, &writebuf, 1, pinger_after_write));
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192 }
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193
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194
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195 static void pinger_on_connect(uv_connect_t* req, int status) {
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196 pinger_t* pinger = (pinger_t*) req->handle->data;
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197
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198 pinger_on_connect_count++;
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199
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200 ASSERT_OK(status);
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201
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202 ASSERT_EQ(1, uv_is_readable(req->handle));
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203 ASSERT_EQ(1, uv_is_writable(req->handle));
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204 ASSERT_OK(uv_is_closing((uv_handle_t *) req->handle));
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205
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206 pinger_write_ping(pinger);
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207
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208 ASSERT_OK(uv_read_start((uv_stream_t*) req->handle,
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209 alloc_cb,
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210 pinger_read_cb));
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211 }
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212
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213
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214 /* same ping-pong test, but using IPv6 connection */
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215 static void tcp_pinger_v6_new(int vectored_writes) {
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216 int r;
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217 struct sockaddr_in6 server_addr;
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218 pinger_t* pinger;
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219
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220
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221 ASSERT_OK(uv_ip6_addr("::1", TEST_PORT, &server_addr));
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222 pinger = malloc(sizeof(*pinger));
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223 ASSERT_NOT_NULL(pinger);
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224 pinger->vectored_writes = vectored_writes;
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225 pinger->state = 0;
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226 pinger->pongs = 0;
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227 pinger->pong = PING;
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228
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229 /* Try to connect to the server and do NUM_PINGS ping-pongs. */
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230 r = uv_tcp_init(uv_default_loop(), &pinger->stream.tcp);
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231 pinger->stream.tcp.data = pinger;
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232 ASSERT_OK(r);
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233
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234 /* We are never doing multiple reads/connects at a time anyway, so these
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235 * handles can be pre-initialized. */
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236 r = uv_tcp_connect(&pinger->connect_req,
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237 &pinger->stream.tcp,
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238 (const struct sockaddr*) &server_addr,
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239 pinger_on_connect);
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240 ASSERT_OK(r);
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241
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242 /* Synchronous connect callbacks are not allowed. */
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243 ASSERT_OK(pinger_on_connect_count);
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244 }
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245
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246
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247 static void tcp_pinger_new(int vectored_writes) {
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248 int r;
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249 struct sockaddr_in server_addr;
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250 pinger_t* pinger;
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251
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252 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr));
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253 pinger = malloc(sizeof(*pinger));
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254 ASSERT_NOT_NULL(pinger);
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255 pinger->vectored_writes = vectored_writes;
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256 pinger->state = 0;
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257 pinger->pongs = 0;
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258 pinger->pong = PING;
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259
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260 /* Try to connect to the server and do NUM_PINGS ping-pongs. */
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261 r = uv_tcp_init(uv_default_loop(), &pinger->stream.tcp);
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262 pinger->stream.tcp.data = pinger;
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263 ASSERT_OK(r);
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264
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265 /* We are never doing multiple reads/connects at a time anyway, so these
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266 * handles can be pre-initialized. */
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267 r = uv_tcp_connect(&pinger->connect_req,
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268 &pinger->stream.tcp,
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269 (const struct sockaddr*) &server_addr,
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270 pinger_on_connect);
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271 ASSERT_OK(r);
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272
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273 /* Synchronous connect callbacks are not allowed. */
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274 ASSERT_OK(pinger_on_connect_count);
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275 }
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276
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277
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278 static void pipe_pinger_new(int vectored_writes) {
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279 int r;
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280 pinger_t* pinger;
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281
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282 pinger = malloc(sizeof(*pinger));
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283 ASSERT_NOT_NULL(pinger);
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284 pinger->vectored_writes = vectored_writes;
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285 pinger->state = 0;
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286 pinger->pongs = 0;
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287 pinger->pong = PING;
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288
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289 /* Try to connect to the server and do NUM_PINGS ping-pongs. */
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290 r = uv_pipe_init(uv_default_loop(), &pinger->stream.pipe, 0);
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291 pinger->stream.pipe.data = pinger;
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292 ASSERT_OK(r);
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293
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294 /* We are never doing multiple reads/connects at a time anyway, so these
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295 * handles can be pre-initialized. */
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296 uv_pipe_connect(&pinger->connect_req, &pinger->stream.pipe, TEST_PIPENAME,
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297 pinger_on_connect);
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298
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299 /* Synchronous connect callbacks are not allowed. */
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300 ASSERT_OK(pinger_on_connect_count);
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301 }
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302
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303
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304 static void socketpair_pinger_new(int vectored_writes) {
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305 pinger_t* pinger;
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306 uv_os_sock_t fds[2];
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307 uv_tcp_t* ponger;
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308
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309 pinger = malloc(sizeof(*pinger));
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310 ASSERT_NOT_NULL(pinger);
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311 pinger->vectored_writes = vectored_writes;
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312 pinger->state = 0;
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313 pinger->pongs = 0;
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314 pinger->pong = PONG;
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315
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316 /* Try to make a socketpair and do NUM_PINGS ping-pongs. */
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317 (void)uv_default_loop(); /* ensure WSAStartup has been performed */
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318 ASSERT_OK(uv_socketpair(SOCK_STREAM, 0, fds, UV_NONBLOCK_PIPE, UV_NONBLOCK_PIPE));
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319 #ifndef _WIN32
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320 /* On Windows, this is actually a UV_TCP, but libuv doesn't detect that. */
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321 ASSERT_EQ(uv_guess_handle((uv_file) fds[0]), UV_NAMED_PIPE);
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322 ASSERT_EQ(uv_guess_handle((uv_file) fds[1]), UV_NAMED_PIPE);
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323 #endif
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324
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325 ASSERT_OK(uv_tcp_init(uv_default_loop(), &pinger->stream.tcp));
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326 pinger->stream.pipe.data = pinger;
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327 ASSERT_OK(uv_tcp_open(&pinger->stream.tcp, fds[1]));
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328
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329 ponger = malloc(sizeof(*ponger));
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330 ASSERT_NOT_NULL(ponger);
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331 ponger->data = NULL;
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332 ASSERT_OK(uv_tcp_init(uv_default_loop(), ponger));
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333 ASSERT_OK(uv_tcp_open(ponger, fds[0]));
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334
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335 pinger_write_ping(pinger);
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336
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337 ASSERT_OK(uv_read_start((uv_stream_t*) &pinger->stream.tcp,
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338 alloc_cb,
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339 pinger_read_cb));
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340 ASSERT_OK(uv_read_start((uv_stream_t*) ponger,
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341 alloc_cb,
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342 ponger_read_cb));
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343 }
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344
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345
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346 static void pipe2_pinger_new(int vectored_writes) {
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347 uv_file fds[2];
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348 pinger_t* pinger;
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349 uv_pipe_t* ponger;
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350
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351 /* Try to make a pipe and do NUM_PINGS pings. */
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352 ASSERT_OK(uv_pipe(fds, UV_NONBLOCK_PIPE, UV_NONBLOCK_PIPE));
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353 ASSERT_EQ(uv_guess_handle(fds[0]), UV_NAMED_PIPE);
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354 ASSERT_EQ(uv_guess_handle(fds[1]), UV_NAMED_PIPE);
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355
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356 ponger = malloc(sizeof(*ponger));
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357 ASSERT_NOT_NULL(ponger);
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358 ASSERT_OK(uv_pipe_init(uv_default_loop(), ponger, 0));
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359 ASSERT_OK(uv_pipe_open(ponger, fds[0]));
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360
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361 pinger = malloc(sizeof(*pinger));
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362 ASSERT_NOT_NULL(pinger);
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363 pinger->vectored_writes = vectored_writes;
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364 pinger->state = 0;
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365 pinger->pongs = 0;
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366 pinger->pong = PING;
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367 ASSERT_OK(uv_pipe_init(uv_default_loop(), &pinger->stream.pipe, 0));
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368 ASSERT_OK(uv_pipe_open(&pinger->stream.pipe, fds[1]));
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369 pinger->stream.pipe.data = pinger; /* record for close_cb */
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370 ponger->data = pinger; /* record for read_cb */
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371
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372 pinger_write_ping(pinger);
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373
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374 ASSERT_OK(uv_read_start((uv_stream_t*) ponger, alloc_cb, pinger_read_cb));
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375 }
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376
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377 static int run_ping_pong_test(void) {
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378 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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379 ASSERT_EQ(1, completed_pingers);
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380
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381 MAKE_VALGRIND_HAPPY(uv_default_loop());
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382 return 0;
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383 }
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384
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385
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386 TEST_IMPL(tcp_ping_pong) {
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387 tcp_pinger_new(0);
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388 run_ping_pong_test();
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389
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390 completed_pingers = 0;
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391 socketpair_pinger_new(0);
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392 return run_ping_pong_test();
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393 }
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394
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395
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396 TEST_IMPL(tcp_ping_pong_vec) {
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397 tcp_pinger_new(1);
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398 run_ping_pong_test();
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399
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400 completed_pingers = 0;
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401 socketpair_pinger_new(1);
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402 return run_ping_pong_test();
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403 }
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404
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405
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406 TEST_IMPL(tcp6_ping_pong) {
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407 if (!can_ipv6())
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408 RETURN_SKIP("IPv6 not supported");
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409 tcp_pinger_v6_new(0);
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410 return run_ping_pong_test();
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411 }
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412
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413
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414 TEST_IMPL(tcp6_ping_pong_vec) {
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415 if (!can_ipv6())
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416 RETURN_SKIP("IPv6 not supported");
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417 tcp_pinger_v6_new(1);
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418 return run_ping_pong_test();
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419 }
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420
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421
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422 TEST_IMPL(pipe_ping_pong) {
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423 pipe_pinger_new(0);
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424 run_ping_pong_test();
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425
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426 completed_pingers = 0;
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427 pipe2_pinger_new(0);
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428 return run_ping_pong_test();
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429 }
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430
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431
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432 TEST_IMPL(pipe_ping_pong_vec) {
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433 pipe_pinger_new(1);
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434 run_ping_pong_test();
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435
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436 completed_pingers = 0;
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437 pipe2_pinger_new(1);
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438 return run_ping_pong_test();
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439 }
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