1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to 5 * deal in the Software without restriction, including without limitation the 6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 7 * sell copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 19 * IN THE SOFTWARE. 20 */ 21 22 #include "uv.h" 23 #include "task.h" 24 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> /* strlen */ 28 29 static int completed_pingers = 0; 30 31 #if defined(__CYGWIN__) || defined(__MSYS__) || defined(__MVS__) 32 #define NUM_PINGS 100 /* fewer pings to avoid timeout */ 33 #else 34 #define NUM_PINGS 1000 35 #endif 36 37 static char PING[] = "PING\n"; 38 static char PONG[] = "PONG\n"; 39 static int pinger_on_connect_count; 40 41 42 typedef struct { 43 int vectored_writes; 44 unsigned pongs; 45 unsigned state; 46 union { 47 uv_tcp_t tcp; 48 uv_pipe_t pipe; 49 } stream; 50 uv_connect_t connect_req; 51 char* pong; 52 } pinger_t; 53 54 55 static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) { 56 buf->base = malloc(size); 57 buf->len = size; 58 } 59 60 61 static void ponger_on_close(uv_handle_t* handle) { 62 if (handle->data) 63 free(handle->data); 64 else 65 free(handle); 66 } 67 68 69 static void pinger_on_close(uv_handle_t* handle) { 70 pinger_t* pinger = (pinger_t*) handle->data; 71 72 ASSERT_EQ(NUM_PINGS, pinger->pongs); 73 74 if (handle == (uv_handle_t*) &pinger->stream.tcp) { 75 free(pinger); /* also frees handle */ 76 } else { 77 uv_close((uv_handle_t*) &pinger->stream.tcp, ponger_on_close); 78 free(handle); 79 } 80 81 completed_pingers++; 82 } 83 84 85 static void pinger_after_write(uv_write_t* req, int status) { 86 ASSERT_EQ(status, 0); 87 free(req->data); 88 free(req); 89 } 90 91 92 static void pinger_write_ping(pinger_t* pinger) { 93 uv_stream_t* stream; 94 uv_write_t* req; 95 uv_buf_t bufs[sizeof PING - 1]; 96 int i, nbufs; 97 98 stream = (uv_stream_t*) &pinger->stream.tcp; 99 100 if (!pinger->vectored_writes) { 101 /* Write a single buffer. */ 102 nbufs = 1; 103 bufs[0] = uv_buf_init(PING, sizeof PING - 1); 104 } else { 105 /* Write multiple buffers, each with one byte in them. */ 106 nbufs = sizeof PING - 1; 107 for (i = 0; i < nbufs; i++) { 108 bufs[i] = uv_buf_init(&PING[i], 1); 109 } 110 } 111 112 req = malloc(sizeof(*req)); 113 ASSERT_NOT_NULL(req); 114 req->data = NULL; 115 ASSERT_EQ(0, uv_write(req, stream, bufs, nbufs, pinger_after_write)); 116 117 puts("PING"); 118 } 119 120 121 static void pinger_read_cb(uv_stream_t* stream, 122 ssize_t nread, 123 const uv_buf_t* buf) { 124 ssize_t i; 125 pinger_t* pinger; 126 127 pinger = (pinger_t*) stream->data; 128 129 if (nread < 0) { 130 ASSERT_EQ(nread, UV_EOF); 131 132 puts("got EOF"); 133 free(buf->base); 134 135 uv_close((uv_handle_t*) stream, pinger_on_close); 136 137 return; 138 } 139 140 /* Now we count the pongs */ 141 for (i = 0; i < nread; i++) { 142 ASSERT_EQ(buf->base[i], pinger->pong[pinger->state]); 143 pinger->state = (pinger->state + 1) % strlen(pinger->pong); 144 145 if (pinger->state != 0) 146 continue; 147 148 printf("PONG %d\n", pinger->pongs); 149 pinger->pongs++; 150 151 if (pinger->pongs < NUM_PINGS) { 152 pinger_write_ping(pinger); 153 } else { 154 uv_close((uv_handle_t*) stream, pinger_on_close); 155 break; 156 } 157 } 158 159 free(buf->base); 160 } 161 162 163 static void ponger_read_cb(uv_stream_t* stream, 164 ssize_t nread, 165 const uv_buf_t* buf) { 166 uv_buf_t writebuf; 167 uv_write_t* req; 168 int i; 169 170 if (nread < 0) { 171 ASSERT_EQ(nread, UV_EOF); 172 173 puts("got EOF"); 174 free(buf->base); 175 176 uv_close((uv_handle_t*) stream, ponger_on_close); 177 178 return; 179 } 180 181 /* Echo back */ 182 for (i = 0; i < nread; i++) { 183 if (buf->base[i] == 'I') 184 buf->base[i] = 'O'; 185 } 186 187 writebuf = uv_buf_init(buf->base, nread); 188 req = malloc(sizeof(*req)); 189 ASSERT_NOT_NULL(req); 190 req->data = buf->base; 191 ASSERT_EQ(0, uv_write(req, stream, &writebuf, 1, pinger_after_write)); 192 } 193 194 195 static void pinger_on_connect(uv_connect_t* req, int status) { 196 pinger_t* pinger = (pinger_t*) req->handle->data; 197 198 pinger_on_connect_count++; 199 200 ASSERT_EQ(status, 0); 201 202 ASSERT_EQ(1, uv_is_readable(req->handle)); 203 ASSERT_EQ(1, uv_is_writable(req->handle)); 204 ASSERT_EQ(0, uv_is_closing((uv_handle_t *) req->handle)); 205 206 pinger_write_ping(pinger); 207 208 ASSERT_EQ(0, uv_read_start((uv_stream_t*) req->handle, 209 alloc_cb, 210 pinger_read_cb)); 211 } 212 213 214 /* same ping-pong test, but using IPv6 connection */ 215 static void tcp_pinger_v6_new(int vectored_writes) { 216 int r; 217 struct sockaddr_in6 server_addr; 218 pinger_t* pinger; 219 220 221 ASSERT_EQ(0, uv_ip6_addr("::1", TEST_PORT, &server_addr)); 222 pinger = malloc(sizeof(*pinger)); 223 ASSERT_NOT_NULL(pinger); 224 pinger->vectored_writes = vectored_writes; 225 pinger->state = 0; 226 pinger->pongs = 0; 227 pinger->pong = PING; 228 229 /* Try to connect to the server and do NUM_PINGS ping-pongs. */ 230 r = uv_tcp_init(uv_default_loop(), &pinger->stream.tcp); 231 pinger->stream.tcp.data = pinger; 232 ASSERT_EQ(0, r); 233 234 /* We are never doing multiple reads/connects at a time anyway, so these 235 * handles can be pre-initialized. */ 236 r = uv_tcp_connect(&pinger->connect_req, 237 &pinger->stream.tcp, 238 (const struct sockaddr*) &server_addr, 239 pinger_on_connect); 240 ASSERT_EQ(0, r); 241 242 /* Synchronous connect callbacks are not allowed. */ 243 ASSERT_EQ(pinger_on_connect_count, 0); 244 } 245 246 247 static void tcp_pinger_new(int vectored_writes) { 248 int r; 249 struct sockaddr_in server_addr; 250 pinger_t* pinger; 251 252 ASSERT_EQ(0, uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr)); 253 pinger = malloc(sizeof(*pinger)); 254 ASSERT_NOT_NULL(pinger); 255 pinger->vectored_writes = vectored_writes; 256 pinger->state = 0; 257 pinger->pongs = 0; 258 pinger->pong = PING; 259 260 /* Try to connect to the server and do NUM_PINGS ping-pongs. */ 261 r = uv_tcp_init(uv_default_loop(), &pinger->stream.tcp); 262 pinger->stream.tcp.data = pinger; 263 ASSERT_EQ(0, r); 264 265 /* We are never doing multiple reads/connects at a time anyway, so these 266 * handles can be pre-initialized. */ 267 r = uv_tcp_connect(&pinger->connect_req, 268 &pinger->stream.tcp, 269 (const struct sockaddr*) &server_addr, 270 pinger_on_connect); 271 ASSERT_EQ(0, r); 272 273 /* Synchronous connect callbacks are not allowed. */ 274 ASSERT_EQ(pinger_on_connect_count, 0); 275 } 276 277 278 static void pipe_pinger_new(int vectored_writes) { 279 int r; 280 pinger_t* pinger; 281 282 pinger = malloc(sizeof(*pinger)); 283 ASSERT_NOT_NULL(pinger); 284 pinger->vectored_writes = vectored_writes; 285 pinger->state = 0; 286 pinger->pongs = 0; 287 pinger->pong = PING; 288 289 /* Try to connect to the server and do NUM_PINGS ping-pongs. */ 290 r = uv_pipe_init(uv_default_loop(), &pinger->stream.pipe, 0); 291 pinger->stream.pipe.data = pinger; 292 ASSERT_EQ(0, r); 293 294 /* We are never doing multiple reads/connects at a time anyway, so these 295 * handles can be pre-initialized. */ 296 uv_pipe_connect(&pinger->connect_req, &pinger->stream.pipe, TEST_PIPENAME, 297 pinger_on_connect); 298 299 /* Synchronous connect callbacks are not allowed. */ 300 ASSERT_EQ(pinger_on_connect_count, 0); 301 } 302 303 304 static void socketpair_pinger_new(int vectored_writes) { 305 pinger_t* pinger; 306 uv_os_sock_t fds[2]; 307 uv_tcp_t* ponger; 308 309 pinger = malloc(sizeof(*pinger)); 310 ASSERT_NOT_NULL(pinger); 311 pinger->vectored_writes = vectored_writes; 312 pinger->state = 0; 313 pinger->pongs = 0; 314 pinger->pong = PONG; 315 316 /* Try to make a socketpair and do NUM_PINGS ping-pongs. */ 317 (void)uv_default_loop(); /* ensure WSAStartup has been performed */ 318 ASSERT_EQ(0, uv_socketpair(SOCK_STREAM, 0, fds, UV_NONBLOCK_PIPE, UV_NONBLOCK_PIPE)); 319 #ifndef _WIN32 320 /* On Windows, this is actually a UV_TCP, but libuv doesn't detect that. */ 321 ASSERT_EQ(uv_guess_handle((uv_file) fds[0]), UV_NAMED_PIPE); 322 ASSERT_EQ(uv_guess_handle((uv_file) fds[1]), UV_NAMED_PIPE); 323 #endif 324 325 ASSERT_EQ(0, uv_tcp_init(uv_default_loop(), &pinger->stream.tcp)); 326 pinger->stream.pipe.data = pinger; 327 ASSERT_EQ(0, uv_tcp_open(&pinger->stream.tcp, fds[1])); 328 329 ponger = malloc(sizeof(*ponger)); 330 ASSERT_NOT_NULL(ponger); 331 ponger->data = NULL; 332 ASSERT_EQ(0, uv_tcp_init(uv_default_loop(), ponger)); 333 ASSERT_EQ(0, uv_tcp_open(ponger, fds[0])); 334 335 pinger_write_ping(pinger); 336 337 ASSERT_EQ(0, uv_read_start((uv_stream_t*) &pinger->stream.tcp, 338 alloc_cb, 339 pinger_read_cb)); 340 ASSERT_EQ(0, uv_read_start((uv_stream_t*) ponger, 341 alloc_cb, 342 ponger_read_cb)); 343 } 344 345 346 static void pipe2_pinger_new(int vectored_writes) { 347 uv_file fds[2]; 348 pinger_t* pinger; 349 uv_pipe_t* ponger; 350 351 /* Try to make a pipe and do NUM_PINGS pings. */ 352 ASSERT_EQ(0, uv_pipe(fds, UV_NONBLOCK_PIPE, UV_NONBLOCK_PIPE)); 353 ASSERT_EQ(uv_guess_handle(fds[0]), UV_NAMED_PIPE); 354 ASSERT_EQ(uv_guess_handle(fds[1]), UV_NAMED_PIPE); 355 356 ponger = malloc(sizeof(*ponger)); 357 ASSERT_NOT_NULL(ponger); 358 ASSERT_EQ(0, uv_pipe_init(uv_default_loop(), ponger, 0)); 359 ASSERT_EQ(0, uv_pipe_open(ponger, fds[0])); 360 361 pinger = malloc(sizeof(*pinger)); 362 ASSERT_NOT_NULL(pinger); 363 pinger->vectored_writes = vectored_writes; 364 pinger->state = 0; 365 pinger->pongs = 0; 366 pinger->pong = PING; 367 ASSERT_EQ(0, uv_pipe_init(uv_default_loop(), &pinger->stream.pipe, 0)); 368 ASSERT_EQ(0, uv_pipe_open(&pinger->stream.pipe, fds[1])); 369 pinger->stream.pipe.data = pinger; /* record for close_cb */ 370 ponger->data = pinger; /* record for read_cb */ 371 372 pinger_write_ping(pinger); 373 374 ASSERT_EQ(0, uv_read_start((uv_stream_t*) ponger, alloc_cb, pinger_read_cb)); 375 } 376 377 static int run_ping_pong_test(void) { 378 uv_run(uv_default_loop(), UV_RUN_DEFAULT); 379 ASSERT_EQ(completed_pingers, 1); 380 381 MAKE_VALGRIND_HAPPY(); 382 return 0; 383 } 384 385 386 TEST_IMPL(tcp_ping_pong) { 387 tcp_pinger_new(0); 388 run_ping_pong_test(); 389 390 completed_pingers = 0; 391 socketpair_pinger_new(0); 392 return run_ping_pong_test(); 393 } 394 395 396 TEST_IMPL(tcp_ping_pong_vec) { 397 tcp_pinger_new(1); 398 run_ping_pong_test(); 399 400 completed_pingers = 0; 401 socketpair_pinger_new(1); 402 return run_ping_pong_test(); 403 } 404 405 406 TEST_IMPL(tcp6_ping_pong) { 407 if (!can_ipv6()) 408 RETURN_SKIP("IPv6 not supported"); 409 tcp_pinger_v6_new(0); 410 return run_ping_pong_test(); 411 } 412 413 414 TEST_IMPL(tcp6_ping_pong_vec) { 415 if (!can_ipv6()) 416 RETURN_SKIP("IPv6 not supported"); 417 tcp_pinger_v6_new(1); 418 return run_ping_pong_test(); 419 } 420 421 422 TEST_IMPL(pipe_ping_pong) { 423 pipe_pinger_new(0); 424 run_ping_pong_test(); 425 426 completed_pingers = 0; 427 pipe2_pinger_new(0); 428 return run_ping_pong_test(); 429 } 430 431 432 TEST_IMPL(pipe_ping_pong_vec) { 433 pipe_pinger_new(1); 434 run_ping_pong_test(); 435 436 completed_pingers = 0; 437 pipe2_pinger_new(1); 438 return run_ping_pong_test(); 439 } 440