mirror of
https://github.com/moparisthebest/curl
synced 2024-11-13 21:15:08 -05:00
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at https://curl.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
***************************************************************************/
|
|
/* <DESC>
|
|
* using the multi interface to do a single download
|
|
* </DESC>
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
/* somewhat unix-specific */
|
|
#include <sys/time.h>
|
|
#include <unistd.h>
|
|
|
|
/* curl stuff */
|
|
#include <curl/curl.h>
|
|
|
|
#ifdef _WIN32
|
|
#define WAITMS(x) Sleep(x)
|
|
#else
|
|
/* Portable sleep for platforms other than Windows. */
|
|
#define WAITMS(x) \
|
|
struct timeval wait = { 0, (x) * 1000 }; \
|
|
(void)select(0, NULL, NULL, NULL, &wait);
|
|
#endif
|
|
|
|
/*
|
|
* Simply download a HTTP file.
|
|
*/
|
|
int main(void)
|
|
{
|
|
CURL *http_handle;
|
|
CURLM *multi_handle;
|
|
|
|
int still_running = 0; /* keep number of running handles */
|
|
int repeats = 0;
|
|
|
|
curl_global_init(CURL_GLOBAL_DEFAULT);
|
|
|
|
http_handle = curl_easy_init();
|
|
|
|
/* set the options (I left out a few, you'll get the point anyway) */
|
|
curl_easy_setopt(http_handle, CURLOPT_URL, "https://www.example.com/");
|
|
|
|
/* init a multi stack */
|
|
multi_handle = curl_multi_init();
|
|
|
|
/* add the individual transfers */
|
|
curl_multi_add_handle(multi_handle, http_handle);
|
|
|
|
/* we start some action by calling perform right away */
|
|
curl_multi_perform(multi_handle, &still_running);
|
|
|
|
while(still_running) {
|
|
CURLMcode mc; /* curl_multi_wait() return code */
|
|
int numfds;
|
|
|
|
/* wait for activity, timeout or "nothing" */
|
|
mc = curl_multi_wait(multi_handle, NULL, 0, 1000, &numfds);
|
|
|
|
if(mc != CURLM_OK) {
|
|
fprintf(stderr, "curl_multi_wait() failed, code %d.\n", mc);
|
|
break;
|
|
}
|
|
|
|
/* 'numfds' being zero means either a timeout or no file descriptors to
|
|
wait for. Try timeout on first occurrence, then assume no file
|
|
descriptors and no file descriptors to wait for means wait for 100
|
|
milliseconds. */
|
|
|
|
if(!numfds) {
|
|
repeats++; /* count number of repeated zero numfds */
|
|
if(repeats > 1) {
|
|
WAITMS(100); /* sleep 100 milliseconds */
|
|
}
|
|
}
|
|
else
|
|
repeats = 0;
|
|
|
|
curl_multi_perform(multi_handle, &still_running);
|
|
}
|
|
|
|
curl_multi_remove_handle(multi_handle, http_handle);
|
|
|
|
curl_easy_cleanup(http_handle);
|
|
|
|
curl_multi_cleanup(multi_handle);
|
|
|
|
curl_global_cleanup();
|
|
|
|
return 0;
|
|
}
|