1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, 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 * Use the TCP keep-alive options
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 = CURLE_OK;
35
36 curl = curl_easy_init();
37 if(curl) {
38 /* enable TCP keep-alive for this transfer */
39 curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);
40
41 /* keep-alive idle time to 120 seconds */
42 curl_easy_setopt(curl, CURLOPT_TCP_KEEPIDLE, 120L);
43
44 /* interval time between keep-alive probes: 60 seconds */
45 curl_easy_setopt(curl, CURLOPT_TCP_KEEPINTVL, 60L);
46
47 /* maximum number of keep-alive probes: 3 */
48 curl_easy_setopt(curl, CURLOPT_TCP_KEEPCNT, 3L);
49
50 curl_easy_setopt(curl, CURLOPT_URL, "https://curl.se/");
51
52 res = curl_easy_perform(curl);
53
54 curl_easy_cleanup(curl);
55 }
56
57 return (int)res;
58 }
59
