1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) 2013 - 2017, 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   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