test-suite/tcp-banger2.c

   1 #include "config.h"
   2
   3 /* $Id: tcp-banger2.c,v 1.23 1999/04/15 06:16:15 wessels Exp $ */
   4
   5 /*
   6  * On some systems, FD_SETSIZE is set to something lower than the
   7  * actual number of files which can be opened.  IRIX is one case,
   8  * NetBSD is another.  So here we increase FD_SETSIZE to our
   9  * configure-discovered maximum *before* any system includes.
  10  */
  11 #define CHANGE_FD_SETSIZE 1
  12
  13 /* Cannot increase FD_SETSIZE on Linux */
  14 #if defined(_SQUID_LINUX_)
  15 #undef CHANGE_FD_SETSIZE
  16 #define CHANGE_FD_SETSIZE 0
  17 #endif
  18
  19 /* Cannot increase FD_SETSIZE on FreeBSD before 2.2.0, causes select(2)
  20  * to return EINVAL. */
  21 /* Marian Durkovic <marian@svf.stuba.sk> */
  22 /* Peter Wemm <peter@spinner.DIALix.COM> */
  23 #if defined(_SQUID_FREEBSD_)
  24 #include <osreldate.h>
  25 #if __FreeBSD_version < 220000
  26 #undef CHANGE_FD_SETSIZE
  27 #define CHANGE_FD_SETSIZE 0
  28 #endif
  29 #endif
  30
  31 /* Increase FD_SETSIZE if SQUID_MAXFD is bigger */
  32 #if CHANGE_FD_SETSIZE && SQUID_MAXFD > DEFAULT_FD_SETSIZE
  33 #define FD_SETSIZE SQUID_MAXFD
  34 #endif
  35
  36 #if HAVE_UNISTD_H
  37 #include <unistd.h>
  38 #endif
  39 #if HAVE_STDLIB_H
  40 #include <stdlib.h>
  41 #endif
  42 #if HAVE_STDIO_H
  43 #include <stdio.h>
  44 #endif
  45 #if HAVE_FCNTL_H
  46 #include <fcntl.h>
  47 #endif
  48 #ifdef HAVE_STRING_H
  49 #include <string.h>
  50 #endif
  51 #ifdef HAVE_STRINGS_H
  52 #include <strings.h>
  53 #endif
  54 #if HAVE_SYS_TYPES_H
  55 #include <sys/types.h>
  56 #endif
  57 #if HAVE_SYS_SELECT_H
  58 #include <sys/select.h>
  59 #endif
  60 #if HAVE_SIGNAL_H
  61 #include <signal.h>
  62 #endif
  63 #if HAVE_TIME_H
  64 #include <time.h>
  65 #endif
  66 #if HAVE_SYS_TIME_H
  67 #include <sys/time.h>
  68 #endif
  69 #if HAVE_SYS_SOCKET_H
  70 #include <sys/socket.h>
  71 #endif
  72 #if HAVE_NETINET_IN_H
  73 #include <netinet/in.h>
  74 #endif
  75 #if HAVE_ARPA_INET_H
  76 #include <arpa/inet.h>
  77 #endif
  78 #if HAVE_ERRNO_H
  79 #include <errno.h>
  80 #endif
  81 #if HAVE_SYS_STAT_H
  82 #include <sys/stat.h>
  83 #endif
  84 #if HAVE_ASSERT_H
  85 #include <assert.h>
  86 #endif
  87 #if HAVE_CTYPE_H
  88 #include <ctype.h>
  89 #endif
  90
  91 #define PROXY_PORT 3128
  92 #define PROXY_ADDR "127.0.0.1"
  93 #define READ_BUF_SZ 4096
  94
  95 static int proxy_port = PROXY_PORT;
  96 static char *proxy_addr = PROXY_ADDR;
  97 static char *progname;
  98 static int reqpersec;
  99 static int nrequests;
 100 static int opt_ims = 0;
 101 static int opt_range = 0;
 102 static int opt_accel = 0;
 103 static int max_connections = 64;
 104 static time_t lifetime = 60;
 105 static time_t process_lifetime = 86400;
 106 static struct timeval now;
 107 static long total_bytes_written = 0;
 108 static long total_bytes_read = 0;
 109 static int opt_checksum = 0;
 110 FILE *trace_file = NULL;
 111
 112 typedef void (CB) (int, void *);
 113
 114 struct _f {
 115     CB *cb;
 116     CB *ccb;
 117     void *data;
 118     time_t start;
 119 };
 120 struct _request {
 121     int fd;
 122     char *url;
 123     char method[16];
 124     char requestbodyfile[256];
 125     char buf[READ_BUF_SZ * 2 + 1];
 126     int headfound;
 127     int validsize;
 128     int bodysize;
 129     int content_length;
 130     int status;
 131     long validsum;
 132     long sum;
 133 };
 134
 135 struct _f FD[SQUID_MAXFD];
 136 int nfds = 0;
 137 int maxfd = 0;
 138
 139
 140 static void
 141 free_request(struct _request *r)
 142 {
 143     if (r->url)
 144         free(r->url);
 145     free(r);
 146 }
 147
 148 char *
 149 mkrfc850(t)
 150      time_t *t;
 151 {
 152     static char buf[128];
 153     struct tm *gmt = gmtime(t);
 154     buf[0] = '\0';
 155     (void) strftime(buf, 127, "%A, %d-%b-%y %H:%M:%S GMT", gmt);
 156     return buf;
 157 }
 158
 159 void
 160 fd_close(int fd)
 161 {
 162     close(fd);
 163     if (FD[fd].ccb)
 164         FD[fd].ccb(fd, FD[fd].data);
 165     FD[fd].ccb = NULL;
 166     FD[fd].cb = NULL;
 167     FD[fd].data = NULL;
 168     nfds--;
 169     if (fd == maxfd) {
 170         while (fd > 0 && FD[fd].cb == NULL)
 171             fd--;
 172         maxfd = fd;
 173     }
 174 }
 175
 176 void
 177 fd_open(int fd, CB * cb, void *data, CB * ccb)
 178 {
 179     assert(fd < SQUID_MAXFD);
 180     FD[fd].cb = cb;
 181     FD[fd].ccb = ccb;
 182     FD[fd].data = data;
 183     FD[fd].start = now.tv_sec;
 184     if (fd > maxfd)
 185         maxfd = fd;
 186     nfds++;
 187 }
 188
 189 void
 190 sig_intr(int sig)
 191 {
 192     fd_close(0);
 193     nfds++;
 194     printf("\rWaiting for open connections to finish...\n");
 195     signal(sig, SIG_DFL);
 196 }
 197
 198 void
 199 read_reply(int fd, void *data)
 200 {
 201     struct _request *r = data;
 202     static unsigned char buf[READ_BUF_SZ];
 203     int len;
 204     int used = 0;
 205     if ((len = read(fd, buf, READ_BUF_SZ)) <= 0) {
 206         fd_close(fd);
 207         reqpersec++;
 208         nrequests++;
 209         return;
 210     }
 211     total_bytes_read += len;
 212     if (r->headfound < 2) {
 213         char *p, *header = NULL;
 214         int oldlen = strlen(r->buf);
 215         int newlen = oldlen + len;
 216         assert(oldlen <= READ_BUF_SZ);
 217         memcpy(r->buf + oldlen, buf, len);
 218         r->buf[newlen + 1] = '\0';
 219         for (p = r->buf; r->headfound < 2 && used < newlen; p++, used++) {
 220             switch (*p) {
 221             case '\n':
 222                 r->headfound++;
 223                 if (!header)
 224                     break;
 225                 /* Decode header */
 226                 if (strncmp(header, "HTTP", 4) == 0)
 227                     r->status = atoi(header + 8);
 228                 else if (strncasecmp(header, "Content-Length:", 15) == 0)
 229                     r->content_length = atoi(header + 15);
 230                 else if (strncasecmp(header, "X-Request-URI:", 14) == 0) {
 231                     /* Check URI */
 232                     if (strncmp(r->url, header + 15, strcspn(header + 15, "\r\n"))) {
 233                         char url[8192];
 234                         strncpy(url, header + 15, strcspn(header + 15, "\r\n"));
 235                         url[strcspn(header + 15, "\r\n")] = '\n';
 236                         fprintf(stderr, "ERROR: Sent %s received %s\n",
 237                             r->url, url);
 238                     }
 239                 }
 240                 header = NULL;
 241                 break;
 242             case '\r':
 243                 break;
 244             default:
 245                 r->headfound = 0;
 246                 if (!header)
 247                     header = p;
 248                 break;
 249             }
 250         }
 251         if (header) {
 252             memmove(r->buf, header, newlen - (header - r->buf) + 1);
 253         }
 254         assert(used >= oldlen);
 255         used -= oldlen;
 256     }
 257     r->bodysize += len - used;
 258     if (opt_checksum) {
 259         for (; used < len; used++) {
 260             r->sum += buf[used];
 261         }
 262     }
 263 }
 264
 265 void
 266 reply_done(int fd, void *data)
 267 {
 268     struct _request *r = data;
 269     if (opt_range);             /* skip size checks for now */
 270     else if (r->bodysize != r->content_length && r->content_length >= 0)
 271         fprintf(stderr, "ERROR: %s got %d of %d bytes\n",
 272             r->url, r->bodysize, r->content_length);
 273     else if (r->validsize >= 0) {
 274         if (r->validsize != r->bodysize)
 275             fprintf(stderr, "WARNING: %s size mismatch wanted %d bytes got %d\n",
 276                 r->url, r->validsize, r->bodysize);
 277         else if (opt_checksum && r->validsum != r->sum)
 278             fprintf(stderr, "WARNING: %s invalid checksum wanted 0x%lx got 0x%lx\n",
 279                 r->url, r->validsum, r->sum);
 280     }
 281     if (trace_file) {
 282         if (opt_checksum)
 283             fprintf(trace_file, "%s %s %d %s %d 0x%lx\n",
 284                 r->method, r->url, r->status, r->requestbodyfile, r->bodysize, r->sum);
 285         else
 286             fprintf(trace_file, "%s %s %d %s %d\n",
 287                 r->method, r->url, r->status, r->requestbodyfile, r->bodysize);
 288     }
 289     free_request(r);
 290 }
 291
 292 struct _request *
 293 request(char *urlin)
 294 {
 295     int s = -1, f = -1;
 296     char buf[4096];
 297     char msg[8192];
 298     char *method, *url, *file, *size, *checksum;
 299     char *host;
 300     char urlbuf[8192];
 301     int len, len2;
 302     time_t w;
 303     struct stat st;
 304     struct sockaddr_in S;
 305     struct _request *r;
 306     if (*urlin == '\0')
 307         return NULL;
 308     if ((s = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
 309         perror("socket");
 310         return NULL;
 311     }
 312     memset(&S, '\0', sizeof(struct sockaddr_in));
 313     S.sin_family = AF_INET;
 314     S.sin_port = htons(proxy_port);
 315     S.sin_addr.s_addr = inet_addr(proxy_addr);
 316     if (connect(s, (struct sockaddr *) &S, sizeof(S)) < 0) {
 317         close(s);
 318         perror("connect");
 319         return NULL;
 320     }
 321     strcpy(urlbuf, urlin);
 322     method = strtok(urlbuf, " ");
 323     url = strtok(NULL, " ");
 324     file = strtok(NULL, " ");
 325     size = strtok(NULL, " ");
 326     checksum = strtok(NULL, " ");
 327     if (!url) {
 328         url = method;
 329         method = "GET";
 330     }
 331     if (!file)
 332         file = "-";
 333     if (!size)
 334         size = "-";
 335     if (!checksum)
 336         checksum = "-";
 337     r = calloc(1, sizeof *r);
 338     assert(r != NULL);
 339     r->url = strdup(url);
 340     assert(r->url);
 341     strcpy(r->method, method);
 342     strcpy(r->requestbodyfile, file);
 343     r->fd = s;
 344     if (size && strcmp(size, "-") != 0)
 345         r->validsize = atoi(size);
 346     else
 347         r->validsize = -1;      /* Unknown */
 348     if (checksum && strcmp(checksum, "-") != 0)
 349         r->validsum = strtoul(checksum, NULL, 0);
 350     r->content_length = -1;     /* Unknown */
 351     if (opt_accel) {
 352         host = strchr(url, '/') + 2;
 353         url = strchr(host, '/');
 354     } else {
 355         host = NULL;
 356     }
 357     sprintf(msg, "%s %s HTTP/1.0\r\n", method, url);
 358     if (host) {
 359         url[0] = '\0';
 360         sprintf(buf, "Host: %s\r\n", host);
 361         strcat(msg, buf);
 362         url[0] = '/';
 363     }
 364     strcat(msg, "Accept: */*\r\n");
 365     if (opt_ims && (lrand48() & 0x03) == 0) {
 366         w = time(NULL) - (lrand48() & 0x3FFFF);
 367         sprintf(buf, "If-Modified-Since: %s\r\n", mkrfc850(&w));
 368         strcat(msg, buf);
 369     }
 370     if (file && strcmp(file, "-") != 0) {
 371         f = open(file, O_RDONLY);
 372         if (f < 0) {
 373             perror("open file");
 374             exit(1);
 375         }
 376         fstat(f, &st);
 377         sprintf(buf, "Content-Length: %d\r\n", (int) st.st_size);
 378         strcat(msg, buf);
 379     }
 380     if (opt_range && (lrand48() & 0x03) == 0) {
 381         int len;
 382         int count = 0;
 383         strcat(msg, "Range: bytes=");
 384         while (((len = (int) lrand48()) & 0x03) == 0 || !count) {
 385             const int offset = (int) lrand48();
 386             if (count)
 387                 strcat(msg, ",");
 388             switch (lrand48() & 0x03) {
 389             case 0:
 390                 sprintf(buf, "-%d", len);
 391                 break;
 392             case 1:
 393                 sprintf(buf, "%d-", offset);
 394                 break;
 395             default:
 396                 sprintf(buf, "%d-%d", offset, offset + len);
 397                 break;
 398             }
 399             strcat(msg, buf);
 400             count++;
 401         }
 402         strcat(msg, "\r\n");
 403     }
 404     strcat(msg, "\r\n");
 405     len = strlen(msg);
 406     if ((len2 = write(s, msg, len)) != len) {
 407         close(s);
 408         perror("write request");
 409         free_request(r);
 410         return NULL;
 411     } else
 412         total_bytes_written += len2;
 413     if (f >= 0) {
 414         while ((len = read(f, buf, sizeof(buf))) > 0) {
 415             len2 = write(s, buf, len);
 416             if (len2 < 0) {
 417                 perror("write body");
 418                 close(s);
 419                 free_request(r);
 420             }
 421         }
 422         if (len < 0) {
 423             perror("read body");
 424             exit(1);
 425         }
 426     }
 427 /*
 428  * if (fcntl(s, F_SETFL, O_NDELAY) < 0)
 429  * perror("fcntl O_NDELAY");
 430  */
 431     return r;
 432 }
 433
 434 void
 435 read_url(int fd, void *junk)
 436 {
 437     struct _request *r;
 438     static char buf[8192];
 439     char *t;
 440     buf[0] = '\0';
 441     if (fgets(buf, 8191, stdin) == NULL) {
 442         printf("Done Reading URLS\n");
 443         fd_close(0);
 444         nfds++;
 445         return;
 446     }
 447     if (buf[0] == '\0')
 448         return;
 449     if ((t = strchr(buf, '\n')))
 450         *t = '\0';
 451     r = request(buf);
 452     if (!r) {
 453         max_connections = nfds - 1;
 454         printf("NOTE: max_connections set at %d\n", max_connections);
 455     } else {
 456         fd_open(r->fd, read_reply, r, reply_done);
 457     }
 458 }
 459
 460 void
 461 usage(void)
 462 {
 463     fprintf(stderr, "usage: %s: -p port -h host -n max\n", progname);
 464     fprintf(stderr, " -t <tracefile>  Save request trace\n");
 465     fprintf(stderr, " -c              Check checksum agains trace\n");
 466     fprintf(stderr, " -i              Send random If-Modified-Since times\n");
 467     fprintf(stderr, " -l <seconds>    Connection lifetime timeout (default 60)\n");
 468     fprintf(stderr, " -a              Accelerator mode\n");
 469 }
 470
 471 int
 472 main(argc, argv)
 473      int argc;
 474      char *argv[];
 475 {
 476     int i;
 477     int c;
 478     int dt;
 479     int j;
 480     fd_set R, R2;
 481     struct timeval start;
 482     struct timeval last;
 483     struct timeval to;
 484     setbuf(stdout, NULL);
 485     setbuf(stderr, NULL);
 486     progname = strdup(argv[0]);
 487     gettimeofday(&now, NULL);
 488     start = last = now;
 489     while ((c = getopt(argc, argv, "ap:h:n:icrl:L:t:")) != -1) {
 490         switch (c) {
 491         case 'a':
 492             opt_accel = 1;
 493             break;
 494         case 'p':
 495             proxy_port = atoi(optarg);
 496             break;
 497         case 'h':
 498             proxy_addr = strdup(optarg);
 499             break;
 500         case 'n':
 501             max_connections = atoi(optarg);
 502             break;
 503         case 'i':
 504             opt_ims = 1;
 505             break;
 506         case 'l':
 507             lifetime = (time_t) atoi(optarg);
 508             break;
 509         case 'L':
 510             process_lifetime = (time_t) atoi(optarg);
 511             break;
 512         case 'c':
 513             opt_checksum = 1;
 514             break;
 515         case 't':
 516             trace_file = fopen(optarg, "a");
 517             assert(trace_file);
 518             setbuf(trace_file, NULL);
 519             break;
 520         case 'r':
 521             opt_range = 1;
 522             break;
 523         default:
 524             usage();
 525             return 1;
 526         }
 527     }
 528     fd_open(0, read_url, NULL, NULL);
 529     nfds--;
 530     signal(SIGINT, sig_intr);
 531     signal(SIGPIPE, SIG_IGN);
 532     FD_ZERO(&R2);
 533     while (nfds || FD[0].cb) {
 534         FD_ZERO(&R);
 535         to.tv_sec = 0;
 536         to.tv_usec = 100000;
 537         if (nfds < max_connections && FD[0].cb)
 538             FD_SET(0, &R);
 539         for (i = 1; i <= maxfd; i++) {
 540             if (FD[i].cb == NULL)
 541                 continue;
 542             if (now.tv_sec - FD[i].start > lifetime) {
 543                 fprintf(stderr, "WARNING: fd %d lifetime timeout\n", i);
 544                 fd_close(i);
 545                 continue;
 546             }
 547             FD_SET(i, &R);
 548         }
 549         if (select(maxfd + 1, &R, NULL, NULL, &to) < 0) {
 550             fprintf(stderr, "maxfd=%d\n", maxfd);
 551             if (errno != EINTR)
 552                 perror("select");
 553             continue;
 554         }
 555         gettimeofday(&now, NULL);
 556         for (i = 0; i <= maxfd; i++) {
 557             if (!FD_ISSET(i, &R))
 558                 continue;
 559             FD[i].cb(i, FD[i].data);
 560             if (nfds < max_connections && FD[0].cb) {
 561                 j = 0;
 562                 FD_SET(0, &R2);
 563                 to.tv_sec = 0;
 564                 to.tv_usec = 0;
 565                 if (select(1, &R2, NULL, NULL, &to) == 1)
 566                     FD[0].cb(0, FD[0].data);
 567             }
 568         }
 569         if (now.tv_sec > last.tv_sec) {
 570             last = now;
 571             dt = (int) (now.tv_sec - start.tv_sec);
 572             printf("T+ %6d: %9d req (%+4d), %4d conn, %3d/sec avg, %dmb, %dkb/sec avg\n",
 573                 dt,
 574                 nrequests,
 575                 reqpersec,
 576                 nfds,
 577                 (int) (nrequests / dt),
 578                 (int) total_bytes_read / 1024 / 1024,
 579                 (int) total_bytes_read / 1024 / dt);
 580             reqpersec = 0;
 581             /*
 582              * if (dt > process_lifetime)
 583              *     exit(0);
 584              */
 585         }
 586     }
 587     printf("Exiting normally\n");
 588     return 0;
 589 }