mirror of
https://github.com/moparisthebest/curl
synced 2024-11-16 06:25:03 -05:00
3a6563d668
All plain C examples now (mostly) adhere to the curl code style. While they are only examples, they had diverted so much and contained all sorts of different mixed code styles by now. Having them use a unified style helps users and readability. Also, as they get copy-and-pasted widely by users, making sure they're clean and nice is a good idea. 573 checksrc warnings were addressed.
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2016, 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.haxx.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; /* 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, "http://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);
|
|
|
|
do {
|
|
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);
|
|
} while(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;
|
|
}
|