test-server/test-server-http.c

   1 /*
   2  * libwebsockets-test-server - libwebsockets test implementation
   3  *
   4  * Copyright (C) 2010-2016 Andy Green <andy@warmcat.com>
   5  *
   6  * This file is made available under the Creative Commons CC0 1.0
   7  * Universal Public Domain Dedication.
   8  *
   9  * The person who associated a work with this deed has dedicated
  10  * the work to the public domain by waiving all of his or her rights
  11  * to the work worldwide under copyright law, including all related
  12  * and neighboring rights, to the extent allowed by law. You can copy,
  13  * modify, distribute and perform the work, even for commercial purposes,
  14  * all without asking permission.
  15  *
  16  * The test apps are intended to be adapted for use in your code, which
  17  * may be proprietary.  So unlike the library itself, they are licensed
  18  * Public Domain.
  19  */
  20 #include "test-server.h"
  21
  22 /*
  23  * This demo server shows how to use libwebsockets for one or more
  24  * websocket protocols in the same server
  25  *
  26  * It defines the following websocket protocols:
  27  *
  28  *  dumb-increment-protocol:  once the socket is opened, an incrementing
  29  *                              ascii string is sent down it every 50ms.
  30  *                              If you send "reset\n" on the websocket, then
  31  *                              the incrementing number is reset to 0.
  32  *
  33  *  lws-mirror-protocol: copies any received packet to every connection also
  34  *                              using this protocol, including the sender
  35  */
  36
  37 extern int debug_level;
  38
  39 enum demo_protocols {
  40         /* always first */
  41         PROTOCOL_HTTP = 0,
  42
  43         PROTOCOL_DUMB_INCREMENT,
  44         PROTOCOL_LWS_MIRROR,
  45
  46         /* always last */
  47         DEMO_PROTOCOL_COUNT
  48 };
  49
  50 /*
  51  * We take a strict whitelist approach to stop ../ attacks
  52  */
  53 struct serveable {
  54         const char *urlpath;
  55         const char *mimetype;
  56 };
  57
  58 /*
  59  * this is just an example of parsing handshake headers, you don't need this
  60  * in your code unless you will filter allowing connections by the header
  61  * content
  62  */
  63 void
  64 dump_handshake_info(struct lws *wsi)
  65 {
  66         int n = 0, len;
  67         char buf[256];
  68         const unsigned char *c;
  69
  70         do {
  71                 c = lws_token_to_string(n);
  72                 if (!c) {
  73                         n++;
  74                         continue;
  75                 }
  76
  77                 len = lws_hdr_total_length(wsi, n);
  78                 if (!len || len > sizeof(buf) - 1) {
  79                         n++;
  80                         continue;
  81                 }
  82
  83                 lws_hdr_copy(wsi, buf, sizeof buf, n);
  84                 buf[sizeof(buf) - 1] = '\0';
  85
  86                 fprintf(stderr, "    %s = %s\n", (char *)c, buf);
  87                 n++;
  88         } while (c);
  89 }
  90
  91 const char * get_mimetype(const char *file)
  92 {
  93         int n = strlen(file);
  94
  95         if (n < 5)
  96                 return NULL;
  97
  98         if (!strcmp(&file[n - 4], ".ico"))
  99                 return "image/x-icon";
 100
 101         if (!strcmp(&file[n - 4], ".png"))
 102                 return "image/png";
 103
 104         if (!strcmp(&file[n - 5], ".html"))
 105                 return "text/html";
 106
 107         return NULL;
 108 }
 109
 110 /* this protocol server (always the first one) handles HTTP,
 111  *
 112  * Some misc callbacks that aren't associated with a protocol also turn up only
 113  * here on the first protocol server.
 114  */
 115
 116 int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
 117                   void *in, size_t len)
 118 {
 119         struct per_session_data__http *pss =
 120                         (struct per_session_data__http *)user, *pss1;
 121         unsigned char buffer[4096 + LWS_PRE];
 122         unsigned long amount, file_len, sent;
 123         char leaf_path[1024];
 124         const char *mimetype;
 125         char *other_headers;
 126         unsigned char *end;
 127         struct timeval tv;
 128         unsigned char *p;
 129         char buf[256];
 130         char b64[64];
 131         int n, m;
 132 #ifdef EXTERNAL_POLL
 133         struct lws_pollargs *pa = (struct lws_pollargs *)in;
 134 #endif
 135
 136         switch (reason) {
 137         case LWS_CALLBACK_HTTP:
 138
 139                 if (debug_level & LLL_INFO) {
 140                         dump_handshake_info(wsi);
 141
 142                         /* dump the individual URI Arg parameters */
 143                         n = 0;
 144                         while (lws_hdr_copy_fragment(wsi, buf, sizeof(buf),
 145                                                      WSI_TOKEN_HTTP_URI_ARGS, n) > 0) {
 146                                 lwsl_notice("URI Arg %d: %s\n", ++n, buf);
 147                         }
 148                 }
 149
 150                 {
 151                         char name[100], rip[50];
 152                         lws_get_peer_addresses(wsi, lws_get_socket_fd(wsi), name,
 153                                                sizeof(name), rip, sizeof(rip));
 154                         sprintf(buf, "%s (%s)", name, rip);
 155                         lwsl_notice("HTTP connect from %s\n", buf);
 156                 }
 157
 158                 if (len < 1) {
 159                         lws_return_http_status(wsi,
 160                                                 HTTP_STATUS_BAD_REQUEST, NULL);
 161                         goto try_to_reuse;
 162                 }
 163
 164                 /* this example server has no concept of directories */
 165                 if (strchr((const char *)in + 1, '/')) {
 166                         lws_return_http_status(wsi, HTTP_STATUS_FORBIDDEN, NULL);
 167                         goto try_to_reuse;
 168                 }
 169
 170 #ifndef LWS_NO_CLIENT
 171                 if (!strcmp(in, "/proxytest")) {
 172                         struct lws_client_connect_info i;
 173
 174                         if (lws_get_child(wsi))
 175                                 break;
 176
 177                         pss->client_finished = 0;
 178                         memset(&i,0, sizeof(i));
 179                         i.context = lws_get_context(wsi);
 180                         i.address = "example.com";
 181                         i.port = 80;
 182                         i.ssl_connection = 0;
 183                         i.path = "/";
 184                         i.host = "example.com";
 185                         i.origin = NULL;
 186                         i.method = "GET";
 187                         i.parent_wsi = wsi;
 188                         if (!lws_client_connect_via_info(&i)) {
 189                                 lwsl_err("proxy connect fail\n");
 190                                 break;
 191                         }
 192                         break;
 193                 }
 194 #endif
 195
 196 #ifdef LWS_WITH_CGI
 197                 if (!strcmp(in, "/cgitest")) {
 198                         static char *cmd[] = {
 199                                 "/bin/sh",
 200                                 "-c",
 201                                 INSTALL_DATADIR"/libwebsockets-test-server/lws-cgi-test.sh",
 202                                 NULL
 203                         };
 204
 205                         lwsl_notice("%s: cgitest\n", __func__);
 206                         n = lws_cgi(wsi, cmd, 5);
 207                         if (n) {
 208                                 lwsl_err("%s: cgi failed\n");
 209                                 return -1;
 210                         }
 211                         p = buffer + LWS_PRE;
 212                         end = p + sizeof(buffer) - LWS_PRE;
 213
 214                         if (lws_add_http_header_status(wsi, 200, &p, end))
 215                                 return 1;
 216                         if (lws_add_http_header_by_token(wsi, WSI_TOKEN_CONNECTION,
 217                                         (unsigned char *)"close", 5, &p, end))
 218                                 return 1;
 219                         n = lws_write(wsi, buffer + LWS_PRE,
 220                                       p - (buffer + LWS_PRE),
 221                                       LWS_WRITE_HTTP_HEADERS);
 222
 223                         /* the cgi starts by outputting headers, we can't
 224                          *  finalize the headers until we see the end of that
 225                          */
 226
 227                         break;
 228                 }
 229 #endif
 230
 231                 /* if a legal POST URL, let it continue and accept data */
 232                 if (lws_hdr_total_length(wsi, WSI_TOKEN_POST_URI))
 233                         return 0;
 234
 235                 /* check for the "send a big file by hand" example case */
 236
 237                 if (!strcmp((const char *)in, "/leaf.jpg")) {
 238                         if (strlen(resource_path) > sizeof(leaf_path) - 10)
 239                                 return -1;
 240                         sprintf(leaf_path, "%s/leaf.jpg", resource_path);
 241
 242                         /* well, let's demonstrate how to send the hard way */
 243
 244                         p = buffer + LWS_PRE;
 245                         end = p + sizeof(buffer) - LWS_PRE;
 246
 247                         pss->fd = lws_plat_file_open(wsi, leaf_path, &file_len,
 248                                                      LWS_O_RDONLY);
 249
 250                         if (pss->fd == LWS_INVALID_FILE) {
 251                                 lwsl_err("faild to open file %s\n", leaf_path);
 252                                 return -1;
 253                         }
 254
 255                         /*
 256                          * we will send a big jpeg file, but it could be
 257                          * anything.  Set the Content-Type: appropriately
 258                          * so the browser knows what to do with it.
 259                          *
 260                          * Notice we use the APIs to build the header, which
 261                          * will do the right thing for HTTP 1/1.1 and HTTP2
 262                          * depending on what connection it happens to be working
 263                          * on
 264                          */
 265                         if (lws_add_http_header_status(wsi, 200, &p, end))
 266                                 return 1;
 267                         if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_SERVER,
 268                                         (unsigned char *)"libwebsockets",
 269                                         13, &p, end))
 270                                 return 1;
 271                         if (lws_add_http_header_by_token(wsi,
 272                                         WSI_TOKEN_HTTP_CONTENT_TYPE,
 273                                         (unsigned char *)"image/jpeg",
 274                                         10, &p, end))
 275                                 return 1;
 276                         if (lws_add_http_header_content_length(wsi,
 277                                                                file_len, &p,
 278                                                                end))
 279                                 return 1;
 280                         if (lws_finalize_http_header(wsi, &p, end))
 281                                 return 1;
 282
 283                         /*
 284                          * send the http headers...
 285                          * this won't block since it's the first payload sent
 286                          * on the connection since it was established
 287                          * (too small for partial)
 288                          *
 289                          * Notice they are sent using LWS_WRITE_HTTP_HEADERS
 290                          * which also means you can't send body too in one step,
 291                          * this is mandated by changes in HTTP2
 292                          */
 293
 294                         *p = '\0';
 295                         lwsl_info("%s\n", buffer + LWS_PRE);
 296
 297                         n = lws_write(wsi, buffer + LWS_PRE,
 298                                       p - (buffer + LWS_PRE),
 299                                       LWS_WRITE_HTTP_HEADERS);
 300                         if (n < 0) {
 301                                 lws_plat_file_close(wsi, pss->fd);
 302                                 return -1;
 303                         }
 304                         /*
 305                          * book us a LWS_CALLBACK_HTTP_WRITEABLE callback
 306                          */
 307                         lws_callback_on_writable(wsi);
 308                         break;
 309                 }
 310
 311                 /* if not, send a file the easy way */
 312                 strcpy(buf, resource_path);
 313                 if (strcmp(in, "/")) {
 314                         if (*((const char *)in) != '/')
 315                                 strcat(buf, "/");
 316                         strncat(buf, in, sizeof(buf) - strlen(resource_path));
 317                 } else /* default file to serve */
 318                         strcat(buf, "/test.html");
 319                 buf[sizeof(buf) - 1] = '\0';
 320
 321                 /* refuse to serve files we don't understand */
 322                 mimetype = get_mimetype(buf);
 323                 if (!mimetype) {
 324                         lwsl_err("Unknown mimetype for %s\n", buf);
 325                         lws_return_http_status(wsi,
 326                                       HTTP_STATUS_UNSUPPORTED_MEDIA_TYPE, NULL);
 327                         return -1;
 328                 }
 329
 330                 /* demonstrates how to set a cookie on / */
 331
 332                 other_headers = leaf_path;
 333                 p = (unsigned char *)leaf_path;
 334                 if (!strcmp((const char *)in, "/") &&
 335                            !lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_COOKIE)) {
 336                         /* this isn't very unguessable but it'll do for us */
 337                         gettimeofday(&tv, NULL);
 338                         n = sprintf(b64, "test=LWS_%u_%u_COOKIE;Max-Age=360000",
 339                                 (unsigned int)tv.tv_sec,
 340                                 (unsigned int)tv.tv_usec);
 341
 342                         if (lws_add_http_header_by_name(wsi,
 343                                 (unsigned char *)"set-cookie:",
 344                                 (unsigned char *)b64, n, &p,
 345                                 (unsigned char *)leaf_path + sizeof(leaf_path)))
 346                                 return 1;
 347                 }
 348                 if (lws_is_ssl(wsi) && lws_add_http_header_by_name(wsi,
 349                                                 (unsigned char *)
 350                                                 "Strict-Transport-Security:",
 351                                                 (unsigned char *)
 352                                                 "max-age=15768000 ; "
 353                                                 "includeSubDomains", 36, &p,
 354                                                 (unsigned char *)leaf_path +
 355                                                         sizeof(leaf_path)))
 356                         return 1;
 357                 n = (char *)p - leaf_path;
 358
 359                 n = lws_serve_http_file(wsi, buf, mimetype, other_headers, n);
 360                 if (n < 0 || ((n > 0) && lws_http_transaction_completed(wsi)))
 361                         return -1; /* error or can't reuse connection: close the socket */
 362
 363                 /*
 364                  * notice that the sending of the file completes asynchronously,
 365                  * we'll get a LWS_CALLBACK_HTTP_FILE_COMPLETION callback when
 366                  * it's done
 367                  */
 368                 break;
 369
 370         case LWS_CALLBACK_HTTP_BODY:
 371                 strncpy(buf, in, 20);
 372                 buf[20] = '\0';
 373                 if (len < 20)
 374                         buf[len] = '\0';
 375
 376                 lwsl_notice("LWS_CALLBACK_HTTP_BODY: %s... len %d\n",
 377                                 (const char *)buf, (int)len);
 378
 379                 break;
 380
 381         case LWS_CALLBACK_HTTP_BODY_COMPLETION:
 382                 lwsl_notice("LWS_CALLBACK_HTTP_BODY_COMPLETION\n");
 383                 /* the whole of the sent body arrived, close or reuse the connection */
 384                 lws_return_http_status(wsi, HTTP_STATUS_OK, NULL);
 385                 goto try_to_reuse;
 386
 387         case LWS_CALLBACK_HTTP_FILE_COMPLETION:
 388                 goto try_to_reuse;
 389
 390         case LWS_CALLBACK_HTTP_WRITEABLE:
 391                 lwsl_info("LWS_CALLBACK_HTTP_WRITEABLE\n");
 392
 393                 if (pss->client_finished)
 394                         return -1;
 395
 396                 if (pss->fd == LWS_INVALID_FILE)
 397                         goto try_to_reuse;
 398 #ifdef LWS_WITH_CGI
 399                 if (pss->reason_bf) {
 400                         if (lws_cgi_write_split_stdout_headers(wsi) < 0)
 401                                 goto bail;
 402
 403                         pss->reason_bf = 0;
 404                         break;
 405                 }
 406 #endif
 407                 /*
 408                  * we can send more of whatever it is we were sending
 409                  */
 410                 sent = 0;
 411                 do {
 412                         /* we'd like the send this much */
 413                         n = sizeof(buffer) - LWS_PRE;
 414
 415                         /* but if the peer told us he wants less, we can adapt */
 416                         m = lws_get_peer_write_allowance(wsi);
 417
 418                         /* -1 means not using a protocol that has this info */
 419                         if (m == 0)
 420                                 /* right now, peer can't handle anything */
 421                                 goto later;
 422
 423                         if (m != -1 && m < n)
 424                                 /* he couldn't handle that much */
 425                                 n = m;
 426
 427                         n = lws_plat_file_read(wsi, pss->fd,
 428                                                &amount, buffer + LWS_PRE, n);
 429                         /* problem reading, close conn */
 430                         if (n < 0) {
 431                                 lwsl_err("problem reading file\n");
 432                                 goto bail;
 433                         }
 434                         n = (int)amount;
 435                         /* sent it all, close conn */
 436                         if (n == 0)
 437                                 goto penultimate;
 438                         /*
 439                          * To support HTTP2, must take care about preamble space
 440                          *
 441                          * identification of when we send the last payload frame
 442                          * is handled by the library itself if you sent a
 443                          * content-length header
 444                          */
 445                         m = lws_write(wsi, buffer + LWS_PRE, n, LWS_WRITE_HTTP);
 446                         if (m < 0) {
 447                                 lwsl_err("write failed\n");
 448                                 /* write failed, close conn */
 449                                 goto bail;
 450                         }
 451                         if (m) /* while still active, extend timeout */
 452                                 lws_set_timeout(wsi, PENDING_TIMEOUT_HTTP_CONTENT, 5);
 453                         sent += m;
 454
 455                 } while (!lws_send_pipe_choked(wsi) && (sent < 1024 * 1024));
 456 later:
 457                 lws_callback_on_writable(wsi);
 458                 break;
 459 penultimate:
 460                 lws_plat_file_close(wsi, pss->fd);
 461                 pss->fd = LWS_INVALID_FILE;
 462                 goto try_to_reuse;
 463
 464 bail:
 465                 lws_plat_file_close(wsi, pss->fd);
 466
 467                 return -1;
 468
 469         /*
 470          * callback for confirming to continue with client IP appear in
 471          * protocol 0 callback since no websocket protocol has been agreed
 472          * yet.  You can just ignore this if you won't filter on client IP
 473          * since the default uhandled callback return is 0 meaning let the
 474          * connection continue.
 475          */
 476         case LWS_CALLBACK_FILTER_NETWORK_CONNECTION:
 477                 /* if we returned non-zero from here, we kill the connection */
 478                 break;
 479
 480 #ifndef LWS_WITH_CLIENT
 481         case LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP:
 482                 p = buffer + LWS_PRE;
 483                 end = p + sizeof(buffer) - LWS_PRE;
 484                 if (lws_add_http_header_status(lws_get_parent(wsi), 200, &p, end))
 485                         return 1;
 486                 if (lws_add_http_header_by_token(lws_get_parent(wsi),
 487                                 WSI_TOKEN_HTTP_SERVER,
 488                                 (unsigned char *)"libwebsockets",
 489                                 13, &p, end))
 490                         return 1;
 491                 if (lws_add_http_header_by_token(lws_get_parent(wsi),
 492                                 WSI_TOKEN_HTTP_CONTENT_TYPE,
 493                                 (unsigned char *)"text/html", 9, &p, end))
 494                         return 1;
 495 #if 0
 496                 if (lws_add_http_header_content_length(lws_get_parent(wsi),
 497                                                        file_len, &p,
 498                                                        end))
 499                         return 1;
 500 #endif
 501                 if (lws_finalize_http_header(lws_get_parent(wsi), &p, end))
 502                         return 1;
 503
 504                 *p = '\0';
 505                 lwsl_info("%s\n", buffer + LWS_PRE);
 506
 507                 n = lws_write(lws_get_parent(wsi), buffer + LWS_PRE,
 508                               p - (buffer + LWS_PRE),
 509                               LWS_WRITE_HTTP_HEADERS);
 510                 if (n < 0)
 511                         return -1;
 512
 513                 break;
 514         case LWS_CALLBACK_CLOSED_CLIENT_HTTP:
 515                 return -1;
 516                 break;
 517         case LWS_CALLBACK_RECEIVE_CLIENT_HTTP:
 518                 m = lws_write(lws_get_parent(wsi), in, len, LWS_WRITE_HTTP);
 519                 if (m < 0)
 520                         return 1;
 521                 break;
 522         case LWS_CALLBACK_COMPLETED_CLIENT_HTTP:
 523                 pss1 = lws_wsi_user(lws_get_parent(wsi));
 524                 pss1->client_finished = 1;
 525                 lws_callback_on_writable(lws_get_parent(wsi));
 526                 return -1;
 527                 break;
 528 #endif
 529
 530 #ifdef LWS_WITH_CGI
 531         /* CGI IO events (POLLIN/OUT) appear here our demo user code policy is
 532          *
 533          *  - POST data goes on subprocess stdin
 534          *  - subprocess stdout goes on http via writeable callback
 535          *  - subprocess stderr goes to the logs
 536          */
 537         case LWS_CALLBACK_CGI:
 538                 pss->args = *((struct lws_cgi_args *)in);
 539                 //lwsl_notice("LWS_CALLBACK_CGI: ch %d\n", pss->args.ch);
 540                 switch (pss->args.ch) { /* which of stdin/out/err ? */
 541                 case LWS_STDIN:
 542                         /* TBD stdin rx flow control */
 543                         break;
 544                 case LWS_STDOUT:
 545                         pss->reason_bf |= 1 << pss->args.ch;
 546                         /* when writing to MASTER would not block */
 547                         lws_callback_on_writable(wsi);
 548                         break;
 549                 case LWS_STDERR:
 550                         n = read(lws_get_socket_fd(pss->args.stdwsi[LWS_STDERR]),
 551                                         buf, 127);
 552                         //lwsl_notice("stderr reads %d\n", n);
 553                         if (n > 0) {
 554                                 if (buf[n - 1] != '\n')
 555                                         buf[n++] = '\n';
 556                                 buf[n] = '\0';
 557                                 lwsl_notice("CGI-stderr: %s\n", buf);
 558                         }
 559                         break;
 560                 }
 561                 break;
 562
 563         case LWS_CALLBACK_CGI_TERMINATED:
 564                 lwsl_notice("LWS_CALLBACK_CGI_TERMINATED\n");
 565                 /* because we sent on openended http, close the connection */
 566                 return -1;
 567
 568         case LWS_CALLBACK_CGI_STDIN_DATA:  /* POST body for stdin */
 569                 lwsl_notice("LWS_CALLBACK_CGI_STDIN_DATA\n");
 570                 pss->args = *((struct lws_cgi_args *)in);
 571                 n = write(lws_get_socket_fd(pss->args.stdwsi[LWS_STDIN]),
 572                           pss->args.data, pss->args.len);
 573                 lwsl_notice("LWS_CALLBACK_CGI_STDIN_DATA: write says %d", n);
 574                 if (n < pss->args.len)
 575                         lwsl_notice("LWS_CALLBACK_CGI_STDIN_DATA: sent %d only %d went",
 576                                         n, pss->args.len);
 577                 return n;
 578 #endif
 579
 580         /*
 581          * callbacks for managing the external poll() array appear in
 582          * protocol 0 callback
 583          */
 584
 585         case LWS_CALLBACK_LOCK_POLL:
 586                 /*
 587                  * lock mutex to protect pollfd state
 588                  * called before any other POLL related callback
 589                  * if protecting wsi lifecycle change, len == 1
 590                  */
 591                 test_server_lock(len);
 592                 break;
 593
 594         case LWS_CALLBACK_UNLOCK_POLL:
 595                 /*
 596                  * unlock mutex to protect pollfd state when
 597                  * called after any other POLL related callback
 598                  * if protecting wsi lifecycle change, len == 1
 599                  */
 600                 test_server_unlock(len);
 601                 break;
 602
 603 #ifdef EXTERNAL_POLL
 604         case LWS_CALLBACK_ADD_POLL_FD:
 605
 606                 if (count_pollfds >= max_poll_elements) {
 607                         lwsl_err("LWS_CALLBACK_ADD_POLL_FD: too many sockets to track\n");
 608                         return 1;
 609                 }
 610
 611                 fd_lookup[pa->fd] = count_pollfds;
 612                 pollfds[count_pollfds].fd = pa->fd;
 613                 pollfds[count_pollfds].events = pa->events;
 614                 pollfds[count_pollfds++].revents = 0;
 615                 break;
 616
 617         case LWS_CALLBACK_DEL_POLL_FD:
 618                 if (!--count_pollfds)
 619                         break;
 620                 m = fd_lookup[pa->fd];
 621                 /* have the last guy take up the vacant slot */
 622                 pollfds[m] = pollfds[count_pollfds];
 623                 fd_lookup[pollfds[count_pollfds].fd] = m;
 624                 break;
 625
 626         case LWS_CALLBACK_CHANGE_MODE_POLL_FD:
 627                 pollfds[fd_lookup[pa->fd]].events = pa->events;
 628                 break;
 629 #endif
 630
 631         case LWS_CALLBACK_GET_THREAD_ID:
 632                 /*
 633                  * if you will call "lws_callback_on_writable"
 634                  * from a different thread, return the caller thread ID
 635                  * here so lws can use this information to work out if it
 636                  * should signal the poll() loop to exit and restart early
 637                  */
 638
 639                 /* return pthread_getthreadid_np(); */
 640
 641                 break;
 642
 643         default:
 644                 break;
 645         }
 646
 647         return 0;
 648
 649         /* if we're on HTTP1.1 or 2.0, will keep the idle connection alive */
 650 try_to_reuse:
 651         if (lws_http_transaction_completed(wsi))
 652                 return -1;
 653
 654         return 0;
 655 }