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    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: }