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curl

    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 2013 - 2018, Linus Nielsen Feltzing <linus@haxx.se>
    9:  *
   10:  * This software is licensed as described in the file COPYING, which
   11:  * you should have received as part of this distribution. The terms
   12:  * are also available at https://curl.haxx.se/docs/copyright.html.
   13:  *
   14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   15:  * copies of the Software, and permit persons to whom the Software is
   16:  * furnished to do so, under the terms of the COPYING file.
   17:  *
   18:  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   19:  * KIND, either express or implied.
   20:  *
   21:  ***************************************************************************/
   22: 
   23: /*
   24:  * Use global DNS cache (while deprecated it should still work), populate it
   25:  * with CURLOPT_RESOLVE in the first request and then make sure a subsequent
   26:  * easy transfer finds and uses the populated stuff.
   27:  */
   28: 
   29: #include "test.h"
   30: 
   31: #include "memdebug.h"
   32: 
   33: #define NUM_HANDLES 2
   34: 
   35: int test(char *URL)
   36: {
   37:   int res = 0;
   38:   CURL *curl[NUM_HANDLES] = {NULL, NULL};
   39:   char *port = libtest_arg3;
   40:   char *address = libtest_arg2;
   41:   char dnsentry[256];
   42:   struct curl_slist *slist = NULL;
   43:   int i;
   44:   char target_url[256];
   45:   (void)URL; /* URL is setup in the code */
   46: 
   47:   if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
   48:     fprintf(stderr, "curl_global_init() failed\n");
   49:     return TEST_ERR_MAJOR_BAD;
   50:   }
   51: 
   52:   msnprintf(dnsentry, sizeof(dnsentry), "server.example.curl:%s:%s",
   53:             port, address);
   54:   printf("%s\n", dnsentry);
   55:   slist = curl_slist_append(slist, dnsentry);
   56: 
   57:   /* get NUM_HANDLES easy handles */
   58:   for(i = 0; i < NUM_HANDLES; i++) {
   59:     /* get an easy handle */
   60:     easy_init(curl[i]);
   61:     /* specify target */
   62:     msnprintf(target_url, sizeof(target_url),
   63:               "http://server.example.curl:%s/path/1512%04i",
   64:               port, i + 1);
   65:     target_url[sizeof(target_url) - 1] = '\0';
   66:     easy_setopt(curl[i], CURLOPT_URL, target_url);
   67:     /* go verbose */
   68:     easy_setopt(curl[i], CURLOPT_VERBOSE, 1L);
   69:     /* include headers */
   70:     easy_setopt(curl[i], CURLOPT_HEADER, 1L);
   71: 
   72:     easy_setopt(curl[i], CURLOPT_DNS_USE_GLOBAL_CACHE, 1L);
   73:   }
   74: 
   75:   /* make the first one populate the GLOBAL cache */
   76:   easy_setopt(curl[0], CURLOPT_RESOLVE, slist);
   77: 
   78:   /* run NUM_HANDLES transfers */
   79:   for(i = 0; (i < NUM_HANDLES) && !res; i++)
   80:     res = curl_easy_perform(curl[i]);
   81: 
   82: test_cleanup:
   83: 
   84:   curl_easy_cleanup(curl[0]);
   85:   curl_easy_cleanup(curl[1]);
   86:   curl_slist_free_all(slist);
   87:   curl_global_cleanup();
   88: 
   89:   return res;
   90: }