text: /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 2013 - 2018, Linus Nielsen Feltzing <linus@haxx.se>
   *
   * This software is licensed as described in the file COPYING, which
   * you should have received as part of this distribution. The terms
   * are also available at https://curl.haxx.se/docs/copyright.html.
   *
   * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   * copies of the Software, and permit persons to whom the Software is
   * furnished to do so, under the terms of the COPYING file.
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   * KIND, either express or implied.
   *
   ***************************************************************************/
  #include "test.h"
  
  #include "testutil.h"
  #include "warnless.h"
  #include "memdebug.h"
  
  #define TEST_HANG_TIMEOUT 60 * 1000
  
  #define NUM_HANDLES 4
  
  int test(char* URL)
  {
      int res = 0;
      CURL* curl[NUM_HANDLES] = {0};
      int running;
      CURLM* m = NULL;
      int i;
      char target_url[256];
      char dnsentry[256];
      struct curl_slist *slist = NULL, *slist2;
      char* port = libtest_arg3;
      char* address = libtest_arg2;
  
      (void)URL;
  
      /* Create fake DNS entries for serverX.example.com for all handles */
      for (i = 0; i < NUM_HANDLES; i++) {
          msnprintf(dnsentry, sizeof(dnsentry), "server%d.example.com:%s:%s", i + 1, port, address);
          printf("%s\n", dnsentry);
          slist2 = curl_slist_append(slist, dnsentry);
          if (!slist2) {
              fprintf(stderr, "curl_slist_append() failed\n");
              goto test_cleanup;
          }
          slist = slist2;
      }
  
      start_test_timing();
  
      global_init(CURL_GLOBAL_ALL);
  
      multi_init(m);
  
      multi_setopt(m, CURLMOPT_MAXCONNECTS, 3L);
  
      /* get NUM_HANDLES easy handles */
      for (i = 0; i < NUM_HANDLES; i++) {
          /* get an easy handle */
          easy_init(curl[i]);
          /* specify target */
          msnprintf(
              target_url,
              sizeof(target_url),
              "http://server%d.example.com:%s/path/1506%04i",
              i + 1,
              port,
              i + 1);
          target_url[sizeof(target_url) - 1] = '\0';
          easy_setopt(curl[i], CURLOPT_URL, target_url);
          /* go verbose */
          easy_setopt(curl[i], CURLOPT_VERBOSE, 1L);
          /* include headers */
          easy_setopt(curl[i], CURLOPT_HEADER, 1L);
  
          easy_setopt(curl[i], CURLOPT_RESOLVE, slist);
      }
  
      fprintf(stderr, "Start at URL 0\n");
  
      for (i = 0; i < NUM_HANDLES; i++) {
          /* add handle to multi */
          multi_add_handle(m, curl[i]);
  
          for (;;) {
              struct timeval interval;
              fd_set rd, wr, exc;
              int maxfd = -99;
  
              interval.tv_sec = 1;
              interval.tv_usec = 0;
  
              multi_perform(m, &running);
  
              abort_on_test_timeout();
  
              if (!running)
                  break; /* done */
  
              FD_ZERO(&rd);
              FD_ZERO(&wr);
              FD_ZERO(&exc);
  
              multi_fdset(m, &rd, &wr, &exc, &maxfd);
  
              /* At this point, maxfd is guaranteed to be greater or equal than -1. */
  
              select_test(maxfd + 1, &rd, &wr, &exc, &interval);
  
              abort_on_test_timeout();
          }
          wait_ms(1); /* to ensure different end times */
      }
  
  test_cleanup:
  
      /* proper cleanup sequence - type PB */
  
      for (i = 0; i < NUM_HANDLES; i++) {
          curl_multi_remove_handle(m, curl[i]);
          curl_easy_cleanup(curl[i]);
      }
  
      curl_slist_free_all(slist);
  
      curl_multi_cleanup(m);
      curl_global_cleanup();
  
      return res;
  }
  