xref: /curl/docs/examples/maxconnects.c (revision f540e43b)
1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) James Fuller, <jim@webcomposite.com>, et al.
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.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  * SPDX-License-Identifier: curl
22  *
23  ***************************************************************************/
24 /* <DESC>
25  * Set maximum number of persistent connections to 1.
26  * </DESC>
27  */
28 #include <stdio.h>
29 #include <curl/curl.h>
30 
main(void)31 int main(void)
32 {
33   CURL *curl;
34   CURLcode res;
35 
36   curl = curl_easy_init();
37   if(curl) {
38     const char *urls[] = { "https://example.com",
39       "https://curl.se",
40       "https://www.example/",
41       NULL /* end of list */
42     };
43     int i = 0;
44 
45     /* Change the maximum number of persistent connection   */
46     curl_easy_setopt(curl, CURLOPT_MAXCONNECTS, 1L);
47 
48     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
49 
50     /* loop over the URLs */
51     while(urls[i]) {
52       curl_easy_setopt(curl, CURLOPT_URL, urls[i]);
53 
54       /* Perform the request, res gets the return code */
55       res = curl_easy_perform(curl);
56       /* Check for errors */
57       if(res != CURLE_OK)
58         fprintf(stderr, "curl_easy_perform() failed: %s\n",
59                 curl_easy_strerror(res));
60       i++;
61     }
62     /* always cleanup */
63     curl_easy_cleanup(curl);
64   }
65   return 0;
66 }
67