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Annotation of embedaddon/curl/docs/examples/multi-poll.c, revision 1.1.1.1

1.1       misho       1: /***************************************************************************
                      2:  *                                  _   _ ____  _
                      3:  *  Project                     ___| | | |  _ \| |
                      4:  *                             / __| | | | |_) | |
                      5:  *                            | (__| |_| |  _ <| |___
                      6:  *                             \___|\___/|_| \_\_____|
                      7:  *
                      8:  * Copyright (C) 1998 - 2019, 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.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: /* <DESC>
                     23:  * single download with the multi interface's curl_multi_poll
                     24:  * </DESC>
                     25:  */
                     26: 
                     27: #include <stdio.h>
                     28: #include <string.h>
                     29: 
                     30: /* somewhat unix-specific */
                     31: #include <sys/time.h>
                     32: #include <unistd.h>
                     33: 
                     34: /* curl stuff */
                     35: #include <curl/curl.h>
                     36: 
                     37: int main(void)
                     38: {
                     39:   CURL *http_handle;
                     40:   CURLM *multi_handle;
                     41:   int still_running = 1; /* keep number of running handles */
                     42: 
                     43:   curl_global_init(CURL_GLOBAL_DEFAULT);
                     44: 
                     45:   http_handle = curl_easy_init();
                     46: 
                     47:   curl_easy_setopt(http_handle, CURLOPT_URL, "https://www.example.com/");
                     48: 
                     49:   multi_handle = curl_multi_init();
                     50: 
                     51:   curl_multi_add_handle(multi_handle, http_handle);
                     52: 
                     53:   while(still_running) {
                     54:     CURLMcode mc; /* curl_multi_poll() return code */
                     55:     int numfds;
                     56: 
                     57:     /* we start some action by calling perform right away */
                     58:     mc = curl_multi_perform(multi_handle, &still_running);
                     59: 
                     60:     if(still_running)
                     61:       /* wait for activity, timeout or "nothing" */
                     62:       mc = curl_multi_poll(multi_handle, NULL, 0, 1000, &numfds);
                     63: 
                     64:     if(mc != CURLM_OK) {
                     65:       fprintf(stderr, "curl_multi_wait() failed, code %d.\n", mc);
                     66:       break;
                     67:     }
                     68:   }
                     69: 
                     70:   curl_multi_remove_handle(multi_handle, http_handle);
                     71:   curl_easy_cleanup(http_handle);
                     72:   curl_multi_cleanup(multi_handle);
                     73:   curl_global_cleanup();
                     74: 
                     75:   return 0;
                     76: }