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Lines 1-453
Link Here
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| 1 |
Index: src/tcp6.c |
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| 2 |
=================================================================== |
| 3 |
RCS file: src/tcp6.c |
| 4 |
diff -N src/tcp6.c |
| 5 |
--- /dev/null 1 Jan 1970 00:00:00 -0000 |
| 6 |
+++ src/tcp6.c 9 Sep 2004 08:35:07 -0000 1.1 |
| 7 |
@@ -0,0 +1,444 @@ |
| 8 |
+/*****************************************************************************/ |
| 9 |
+/* "NetPIPE" -- Network Protocol Independent Performance Evaluator. */ |
| 10 |
+/* Copyright 1997, 1998 Iowa State University Research Foundation, Inc. */ |
| 11 |
+/* */ |
| 12 |
+/* This program is free software; you can redistribute it and/or modify */ |
| 13 |
+/* it under the terms of the GNU General Public License as published by */ |
| 14 |
+/* the Free Software Foundation. You should have received a copy of the */ |
| 15 |
+/* GNU General Public License along with this program; if not, write to the */ |
| 16 |
+/* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 17 |
+/* */ |
| 18 |
+/* TCP6 extension Copyright 2004 George V. Neville-Neil and Neville-Neil */ |
| 19 |
+/* Consulting */ |
| 20 |
+/* */ |
| 21 |
+/* * tcp6.c ---- TCP over IPv6 calls source */ |
| 22 |
+/* * tcp.h ---- Include file for TCP6 calls and data structs */ |
| 23 |
+/*****************************************************************************/ |
| 24 |
+#include "netpipe.h" |
| 25 |
+ |
| 26 |
+#if defined (MPLITE) |
| 27 |
+#include "mplite.h" |
| 28 |
+#endif |
| 29 |
+ |
| 30 |
+ |
| 31 |
+int doing_reset = 0; |
| 32 |
+ |
| 33 |
+void Init(ArgStruct *p, int* pargc, char*** pargv) |
| 34 |
+{ |
| 35 |
+ p->reset_conn = 0; /* Default to not resetting connection */ |
| 36 |
+ p->prot.sndbufsz = p->prot.rcvbufsz = 0; |
| 37 |
+ /* The transmitter will be set using the -h host flag. */ |
| 38 |
+ p->tr = 0; |
| 39 |
+ p->rcv = 1; |
| 40 |
+} |
| 41 |
+ |
| 42 |
+void Setup(ArgStruct *p) |
| 43 |
+{ |
| 44 |
+ int one = 1; |
| 45 |
+ int sockfd = -1; |
| 46 |
+ /* ptr to sockaddr_in in ArgStruct */ |
| 47 |
+ struct sockaddr_in6 *lsin1, *lsin2; |
| 48 |
+ |
| 49 |
+ char *host; |
| 50 |
+ struct hostent *hp; |
| 51 |
+ struct protoent *proto; |
| 52 |
+ int send_size, recv_size, sizeofint = sizeof(int); |
| 53 |
+ |
| 54 |
+ host = p->host; /* copy ptr to hostname */ |
| 55 |
+ |
| 56 |
+ lsin1 = &(p->prot.sin1); |
| 57 |
+ lsin2 = &(p->prot.sin2); |
| 58 |
+ |
| 59 |
+ bzero((char *) lsin1, sizeof(*lsin1)); |
| 60 |
+ bzero((char *) lsin2, sizeof(*lsin2)); |
| 61 |
+ |
| 62 |
+ if ((sockfd = socket(AF_INET6, SOCK_STREAM, 0)) < 0){ |
| 63 |
+ printf("NetPIPE: can't open stream socket! errno=%d\n", errno); |
| 64 |
+ exit(-4); |
| 65 |
+ } |
| 66 |
+ |
| 67 |
+ if(!(proto = getprotobyname("tcp"))){ |
| 68 |
+ printf("NetPIPE: protocol 'tcp' unknown!\n"); |
| 69 |
+ exit(555); |
| 70 |
+ } |
| 71 |
+ |
| 72 |
+ /* Attempt to set TCP_NODELAY */ |
| 73 |
+ |
| 74 |
+ if(setsockopt(sockfd, proto->p_proto, TCP_NODELAY, &one, sizeof(one)) < 0) |
| 75 |
+ { |
| 76 |
+ printf("NetPIPE: setsockopt: TCP_NODELAY failed! errno=%d\n", errno); |
| 77 |
+ exit(556); |
| 78 |
+ } |
| 79 |
+ |
| 80 |
+ /* If requested, set the send and receive buffer sizes */ |
| 81 |
+ |
| 82 |
+ if(p->prot.sndbufsz > 0) |
| 83 |
+ { |
| 84 |
+ if(setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, &(p->prot.sndbufsz), |
| 85 |
+ sizeof(p->prot.sndbufsz)) < 0) |
| 86 |
+ { |
| 87 |
+ printf("NetPIPE: setsockopt: SO_SNDBUF failed! errno=%d\n", errno); |
| 88 |
+ printf("You may have asked for a buffer larger than the system can handle\n"); |
| 89 |
+ exit(556); |
| 90 |
+ } |
| 91 |
+ if(setsockopt(sockfd, SOL_SOCKET, SO_RCVBUF, &(p->prot.rcvbufsz), |
| 92 |
+ sizeof(p->prot.rcvbufsz)) < 0) |
| 93 |
+ { |
| 94 |
+ printf("NetPIPE: setsockopt: SO_RCVBUF failed! errno=%d\n", errno); |
| 95 |
+ printf("You may have asked for a buffer larger than the system can handle\n"); |
| 96 |
+ exit(556); |
| 97 |
+ } |
| 98 |
+ } |
| 99 |
+ getsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, |
| 100 |
+ (char *) &send_size, (void *) &sizeofint); |
| 101 |
+ getsockopt(sockfd, SOL_SOCKET, SO_RCVBUF, |
| 102 |
+ (char *) &recv_size, (void *) &sizeofint); |
| 103 |
+ |
| 104 |
+ if(!doing_reset) { |
| 105 |
+ fprintf(stderr,"Send and receive buffers are %d and %d bytes\n", |
| 106 |
+ send_size, recv_size); |
| 107 |
+ fprintf(stderr, "(A bug in Linux doubles the requested buffer sizes)\n"); |
| 108 |
+ } |
| 109 |
+ |
| 110 |
+ if( p->tr ) { /* Primary transmitter */ |
| 111 |
+ |
| 112 |
+ lsin1->sin6_family = AF_INET6; |
| 113 |
+ |
| 114 |
+ /* First attempt to convert the string to an IPv6 */ |
| 115 |
+ /* address. */ |
| 116 |
+ /* If the user supplied a real host name this will fail and */ |
| 117 |
+ /* we'll then do a name lookup. */ |
| 118 |
+ |
| 119 |
+ if (inet_pton(AF_INET6, host, &lsin1->sin6_addr) == 0) |
| 120 |
+ { |
| 121 |
+ if ((hp = gethostbyname2(host, AF_INET6)) == NULL) |
| 122 |
+ { |
| 123 |
+ printf("NetPIPE: invalid hostname '%s'\n", host); |
| 124 |
+ exit(-5); |
| 125 |
+ } |
| 126 |
+ |
| 127 |
+ if (hp->h_addrtype != AF_INET6) |
| 128 |
+ { |
| 129 |
+ printf("NetPIPE: invalid hostname '%s'\n", host); |
| 130 |
+ exit(-5); |
| 131 |
+ } |
| 132 |
+ bcopy(hp->h_addr, (char*) &(lsin1->sin6_addr), |
| 133 |
+ hp->h_length); |
| 134 |
+ } |
| 135 |
+ |
| 136 |
+ lsin1->sin6_port = htons(p->port); |
| 137 |
+ |
| 138 |
+ p->commfd = sockfd; |
| 139 |
+ |
| 140 |
+ } else if( p->rcv ) { /* we are the receiver */ |
| 141 |
+ bzero((char *) lsin1, sizeof(*lsin1)); |
| 142 |
+ lsin1->sin6_family = AF_INET6; |
| 143 |
+ lsin1->sin6_len = sizeof(*lsin1); |
| 144 |
+ lsin1->sin6_port = htons(p->port); |
| 145 |
+ /* Setting this to all 0 is the "ANY" address. */ |
| 146 |
+ bzero(&lsin1->sin6_addr, sizeof(lsin1->sin6_addr)); |
| 147 |
+ |
| 148 |
+ if (bind(sockfd, (struct sockaddr *) lsin1, sizeof(*lsin1)) < 0){ |
| 149 |
+ printf("NetPIPE: server: bind on local address failed! errno=%d", errno); |
| 150 |
+ exit(-6); |
| 151 |
+ } |
| 152 |
+ |
| 153 |
+ p->servicefd = sockfd; |
| 154 |
+ } |
| 155 |
+ p->upper = send_size + recv_size; |
| 156 |
+ |
| 157 |
+ establish(p); /* Establish connections */ |
| 158 |
+ |
| 159 |
+} |
| 160 |
+ |
| 161 |
+static int |
| 162 |
+readFully(int fd, void *obuf, int len) |
| 163 |
+{ |
| 164 |
+ int bytesLeft = len; |
| 165 |
+ char *buf = (char *) obuf; |
| 166 |
+ int bytesRead = 0; |
| 167 |
+ |
| 168 |
+ while (bytesLeft > 0 && |
| 169 |
+ (bytesRead = read(fd, (void *) buf, bytesLeft)) > 0) |
| 170 |
+ { |
| 171 |
+ bytesLeft -= bytesRead; |
| 172 |
+ buf += bytesRead; |
| 173 |
+ } |
| 174 |
+ if (bytesRead <= 0) return bytesRead; |
| 175 |
+ return len; |
| 176 |
+} |
| 177 |
+ |
| 178 |
+void Sync(ArgStruct *p) |
| 179 |
+{ |
| 180 |
+ char s[] = "SyncMe", response[] = " "; |
| 181 |
+ |
| 182 |
+ if (write(p->commfd, s, strlen(s)) < 0 || /* Write to nbor */ |
| 183 |
+ readFully(p->commfd, response, strlen(s)) < 0) /* Read from nbor */ |
| 184 |
+ { |
| 185 |
+ perror("NetPIPE: error writing or reading synchronization string"); |
| 186 |
+ exit(3); |
| 187 |
+ } |
| 188 |
+ if (strncmp(s, response, strlen(s))) |
| 189 |
+ { |
| 190 |
+ fprintf(stderr, "NetPIPE: Synchronization string incorrect! |%s|\n", response); |
| 191 |
+ exit(3); |
| 192 |
+ } |
| 193 |
+} |
| 194 |
+ |
| 195 |
+void PrepareToReceive(ArgStruct *p) |
| 196 |
+{ |
| 197 |
+ /* |
| 198 |
+ The Berkeley sockets interface doesn't have a method to pre-post |
| 199 |
+ a buffer for reception of data. |
| 200 |
+ */ |
| 201 |
+} |
| 202 |
+ |
| 203 |
+void SendData(ArgStruct *p) |
| 204 |
+{ |
| 205 |
+ int bytesWritten, bytesLeft; |
| 206 |
+ char *q; |
| 207 |
+ |
| 208 |
+ bytesLeft = p->bufflen; |
| 209 |
+ bytesWritten = 0; |
| 210 |
+ q = p->s_ptr; |
| 211 |
+ while (bytesLeft > 0 && |
| 212 |
+ (bytesWritten = write(p->commfd, q, bytesLeft)) > 0) |
| 213 |
+ { |
| 214 |
+ bytesLeft -= bytesWritten; |
| 215 |
+ q += bytesWritten; |
| 216 |
+ } |
| 217 |
+ if (bytesWritten == -1) |
| 218 |
+ { |
| 219 |
+ printf("NetPIPE: write: error encountered, errno=%d\n", errno); |
| 220 |
+ exit(401); |
| 221 |
+ } |
| 222 |
+} |
| 223 |
+ |
| 224 |
+void RecvData(ArgStruct *p) |
| 225 |
+{ |
| 226 |
+ int bytesLeft; |
| 227 |
+ int bytesRead; |
| 228 |
+ char *q; |
| 229 |
+ |
| 230 |
+ bytesLeft = p->bufflen; |
| 231 |
+ bytesRead = 0; |
| 232 |
+ q = p->r_ptr; |
| 233 |
+ while (bytesLeft > 0 && |
| 234 |
+ (bytesRead = read(p->commfd, q, bytesLeft)) > 0) |
| 235 |
+ { |
| 236 |
+ bytesLeft -= bytesRead; |
| 237 |
+ q += bytesRead; |
| 238 |
+ } |
| 239 |
+ if (bytesLeft > 0 && bytesRead == 0) |
| 240 |
+ { |
| 241 |
+ printf("NetPIPE: \"end of file\" encountered on reading from socket\n"); |
| 242 |
+ } |
| 243 |
+ else if (bytesRead == -1) |
| 244 |
+ { |
| 245 |
+ printf("NetPIPE: read: error encountered, errno=%d\n", errno); |
| 246 |
+ exit(401); |
| 247 |
+ } |
| 248 |
+} |
| 249 |
+ |
| 250 |
+/* uint32_t is used to insure that the integer size is the same even in tests |
| 251 |
+ * between 64-bit and 32-bit architectures. */ |
| 252 |
+ |
| 253 |
+void SendTime(ArgStruct *p, double *t) |
| 254 |
+{ |
| 255 |
+ uint32_t ltime, ntime; |
| 256 |
+ |
| 257 |
+ /* |
| 258 |
+ Multiply the number of seconds by 1e8 to get time in 0.01 microseconds |
| 259 |
+ and convert value to an unsigned 32-bit integer. |
| 260 |
+ */ |
| 261 |
+ ltime = (uint32_t)(*t * 1.e8); |
| 262 |
+ |
| 263 |
+ /* Send time in network order */ |
| 264 |
+ ntime = htonl(ltime); |
| 265 |
+ if (write(p->commfd, (char *)&ntime, sizeof(uint32_t)) < 0) |
| 266 |
+ { |
| 267 |
+ printf("NetPIPE: write failed in SendTime: errno=%d\n", errno); |
| 268 |
+ exit(301); |
| 269 |
+ } |
| 270 |
+} |
| 271 |
+ |
| 272 |
+void RecvTime(ArgStruct *p, double *t) |
| 273 |
+{ |
| 274 |
+ uint32_t ltime, ntime; |
| 275 |
+ int bytesRead; |
| 276 |
+ |
| 277 |
+ bytesRead = readFully(p->commfd, (void *)&ntime, sizeof(uint32_t)); |
| 278 |
+ if (bytesRead < 0) |
| 279 |
+ { |
| 280 |
+ printf("NetPIPE: read failed in RecvTime: errno=%d\n", errno); |
| 281 |
+ exit(302); |
| 282 |
+ } |
| 283 |
+ else if (bytesRead != sizeof(uint32_t)) |
| 284 |
+ { |
| 285 |
+ fprintf(stderr, "NetPIPE: partial read in RecvTime of %d bytes\n", |
| 286 |
+ bytesRead); |
| 287 |
+ exit(303); |
| 288 |
+ } |
| 289 |
+ ltime = ntohl(ntime); |
| 290 |
+ |
| 291 |
+ /* Result is ltime (in microseconds) divided by 1.0e8 to get seconds */ |
| 292 |
+ |
| 293 |
+ *t = (double)ltime / 1.0e8; |
| 294 |
+} |
| 295 |
+ |
| 296 |
+void SendRepeat(ArgStruct *p, int rpt) |
| 297 |
+{ |
| 298 |
+ uint32_t lrpt, nrpt; |
| 299 |
+ |
| 300 |
+ lrpt = rpt; |
| 301 |
+ /* Send repeat count as a long in network order */ |
| 302 |
+ nrpt = htonl(lrpt); |
| 303 |
+ if (write(p->commfd, (void *) &nrpt, sizeof(uint32_t)) < 0) |
| 304 |
+ { |
| 305 |
+ printf("NetPIPE: write failed in SendRepeat: errno=%d\n", errno); |
| 306 |
+ exit(304); |
| 307 |
+ } |
| 308 |
+} |
| 309 |
+ |
| 310 |
+void RecvRepeat(ArgStruct *p, int *rpt) |
| 311 |
+{ |
| 312 |
+ uint32_t lrpt, nrpt; |
| 313 |
+ int bytesRead; |
| 314 |
+ |
| 315 |
+ bytesRead = readFully(p->commfd, (void *)&nrpt, sizeof(uint32_t)); |
| 316 |
+ if (bytesRead < 0) |
| 317 |
+ { |
| 318 |
+ printf("NetPIPE: read failed in RecvRepeat: errno=%d\n", errno); |
| 319 |
+ exit(305); |
| 320 |
+ } |
| 321 |
+ else if (bytesRead != sizeof(uint32_t)) |
| 322 |
+ { |
| 323 |
+ fprintf(stderr, "NetPIPE: partial read in RecvRepeat of %d bytes\n", |
| 324 |
+ bytesRead); |
| 325 |
+ exit(306); |
| 326 |
+ } |
| 327 |
+ lrpt = ntohl(nrpt); |
| 328 |
+ |
| 329 |
+ *rpt = lrpt; |
| 330 |
+} |
| 331 |
+ |
| 332 |
+void establish(ArgStruct *p) |
| 333 |
+{ |
| 334 |
+ int one = 1; |
| 335 |
+ socklen_t clen; |
| 336 |
+ struct protoent *proto; |
| 337 |
+ |
| 338 |
+ clen = (socklen_t) sizeof(p->prot.sin2); |
| 339 |
+ |
| 340 |
+ if( p->tr ){ |
| 341 |
+ |
| 342 |
+ while( connect(p->commfd, (struct sockaddr *) &(p->prot.sin1), |
| 343 |
+ sizeof(p->prot.sin1)) < 0 ) { |
| 344 |
+ |
| 345 |
+ /* If we are doing a reset and we get a connection refused from |
| 346 |
+ * the connect() call, assume that the other node has not yet |
| 347 |
+ * gotten to its corresponding accept() call and keep trying until |
| 348 |
+ * we have success. |
| 349 |
+ */ |
| 350 |
+ if(!doing_reset || errno != ECONNREFUSED) { |
| 351 |
+ printf("Client: Cannot Connect! errno=%d\n",errno); |
| 352 |
+ exit(-10); |
| 353 |
+ } |
| 354 |
+ |
| 355 |
+ } |
| 356 |
+ |
| 357 |
+ } else if( p->rcv ) { |
| 358 |
+ |
| 359 |
+ /* SERVER */ |
| 360 |
+ listen(p->servicefd, 5); |
| 361 |
+ p->commfd = accept(p->servicefd, (struct sockaddr *) &(p->prot.sin2), &clen); |
| 362 |
+ |
| 363 |
+ if(p->commfd < 0){ |
| 364 |
+ printf("Server: Accept Failed! errno=%d\n",errno); |
| 365 |
+ exit(-12); |
| 366 |
+ } |
| 367 |
+ |
| 368 |
+ /* |
| 369 |
+ Attempt to set TCP_NODELAY. TCP_NODELAY may or may not be propagated |
| 370 |
+ to accepted sockets. |
| 371 |
+ */ |
| 372 |
+ if(!(proto = getprotobyname("tcp"))){ |
| 373 |
+ printf("unknown protocol!\n"); |
| 374 |
+ exit(555); |
| 375 |
+ } |
| 376 |
+ |
| 377 |
+ if(setsockopt(p->commfd, proto->p_proto, TCP_NODELAY, |
| 378 |
+ &one, sizeof(one)) < 0) |
| 379 |
+ { |
| 380 |
+ printf("setsockopt: TCP_NODELAY failed! errno=%d\n", errno); |
| 381 |
+ exit(556); |
| 382 |
+ } |
| 383 |
+ |
| 384 |
+ /* If requested, set the send and receive buffer sizes */ |
| 385 |
+ if(p->prot.sndbufsz > 0) |
| 386 |
+ { |
| 387 |
+/* printf("Send and Receive Buffers on accepted socket set to %d bytes\n",*/ |
| 388 |
+/* p->prot.sndbufsz);*/ |
| 389 |
+ if(setsockopt(p->commfd, SOL_SOCKET, SO_SNDBUF, &(p->prot.sndbufsz), |
| 390 |
+ sizeof(p->prot.sndbufsz)) < 0) |
| 391 |
+ { |
| 392 |
+ printf("setsockopt: SO_SNDBUF failed! errno=%d\n", errno); |
| 393 |
+ exit(556); |
| 394 |
+ } |
| 395 |
+ if(setsockopt(p->commfd, SOL_SOCKET, SO_RCVBUF, &(p->prot.rcvbufsz), |
| 396 |
+ sizeof(p->prot.rcvbufsz)) < 0) |
| 397 |
+ { |
| 398 |
+ printf("setsockopt: SO_RCVBUF failed! errno=%d\n", errno); |
| 399 |
+ exit(556); |
| 400 |
+ } |
| 401 |
+ } |
| 402 |
+ } |
| 403 |
+} |
| 404 |
+ |
| 405 |
+void CleanUp(ArgStruct *p) |
| 406 |
+{ |
| 407 |
+ char *quit="QUIT"; |
| 408 |
+ |
| 409 |
+ if (p->tr) { |
| 410 |
+ |
| 411 |
+ write(p->commfd,quit, 5); |
| 412 |
+ read(p->commfd, quit, 5); |
| 413 |
+ close(p->commfd); |
| 414 |
+ |
| 415 |
+ } else if( p->rcv ) { |
| 416 |
+ |
| 417 |
+ read(p->commfd,quit, 5); |
| 418 |
+ write(p->commfd,quit,5); |
| 419 |
+ close(p->commfd); |
| 420 |
+ close(p->servicefd); |
| 421 |
+ |
| 422 |
+ } |
| 423 |
+} |
| 424 |
+ |
| 425 |
+ |
| 426 |
+void Reset(ArgStruct *p) |
| 427 |
+{ |
| 428 |
+ |
| 429 |
+ /* Reset sockets */ |
| 430 |
+ |
| 431 |
+ if(p->reset_conn) { |
| 432 |
+ |
| 433 |
+ doing_reset = 1; |
| 434 |
+ |
| 435 |
+ /* Close the sockets */ |
| 436 |
+ |
| 437 |
+ CleanUp(p); |
| 438 |
+ |
| 439 |
+ /* Now open and connect new sockets */ |
| 440 |
+ |
| 441 |
+ Setup(p); |
| 442 |
+ |
| 443 |
+ } |
| 444 |
+ |
| 445 |
+} |
| 446 |
+ |
| 447 |
+void AfterAlignmentInit(ArgStruct *p) |
| 448 |
+{ |
| 449 |
+ |
| 450 |
+} |
| 451 |
+ |
| 452 |
|
| 453 |
|