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      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 2013 - 2017, Linus Nielsen Feltzing <linus (at) 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   snprintf(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     snprintf(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 }
     91 
     92