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 * multi interface code doing two parallel HTTP transfers
26 * </DESC>
27 */
28 #include <stdio.h>
29 #include <string.h>
30
31 /* somewhat unix-specific */
32 #include <sys/time.h>
33 #include <unistd.h>
34
35 /* curl stuff */
36 #include <curl/curl.h>
37
38 /*
39 * Simply download two HTTP files!
40 */
main(void)41 int main(void)
42 {
43 CURL *http_handle;
44 CURL *http_handle2;
45 CURLM *multi_handle;
46
47 int still_running = 1; /* keep number of running handles */
48
49 http_handle = curl_easy_init();
50 http_handle2 = curl_easy_init();
51
52 /* set options */
53 curl_easy_setopt(http_handle, CURLOPT_URL, "https://www.example.com/");
54
55 /* set options */
56 curl_easy_setopt(http_handle2, CURLOPT_URL, "http://localhost/");
57
58 /* init a multi stack */
59 multi_handle = curl_multi_init();
60
61 /* add the individual transfers */
62 curl_multi_add_handle(multi_handle, http_handle);
63 curl_multi_add_handle(multi_handle, http_handle2);
64
65 while(still_running) {
66 CURLMsg *msg;
67 int queued;
68 CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
69
70 if(still_running)
71 /* wait for activity, timeout or "nothing" */
72 mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
73
74 if(mc)
75 break;
76
77 do {
78 msg = curl_multi_info_read(multi_handle, &queued);
79 if(msg) {
80 if(msg->msg == CURLMSG_DONE) {
81 /* a transfer ended */
82 fprintf(stderr, "Transfer completed\n");
83 }
84 }
85 } while(msg);
86 }
87
88 curl_multi_remove_handle(multi_handle, http_handle);
89 curl_multi_remove_handle(multi_handle, http_handle2);
90
91 curl_multi_cleanup(multi_handle);
92
93 curl_easy_cleanup(http_handle);
94 curl_easy_cleanup(http_handle2);
95
96 return 0;
97 }
98