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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2021, 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>
* Use the progress callbacks, old and/or new one depending on available
* libcurl version.
* </DESC>
*/
#include <stdio.h>
#include <curl/curl.h>
#define MINIMAL_PROGRESS_FUNCTIONALITY_INTERVAL 3000000
#define STOP_DOWNLOAD_AFTER_THIS_MANY_BYTES 6000
struct myprogress {
curl_off_t lastruntime; /* type depends on version, see above */
CURL *curl;
};
/* this is how the CURLOPT_XFERINFOFUNCTION callback works */
static int xferinfo(void *p,
curl_off_t dltotal, curl_off_t dlnow,
curl_off_t ultotal, curl_off_t ulnow)
{
struct myprogress *myp = (struct myprogress *)p;
CURL *curl = myp->curl;
curl_off_t curtime = 0;
curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME_T, &curtime);
/* under certain circumstances it may be desirable for certain functionality
to only run every N seconds, in order to do this the transaction time can
be used */
if((curtime - myp->lastruntime) >= MINIMAL_PROGRESS_FUNCTIONALITY_INTERVAL) {
myp->lastruntime = curtime;
fprintf(stderr, "TOTAL TIME: %" CURL_FORMAT_CURL_OFF_T ".%06ld\r\n",
(curtime / 1000000), (long)(curtime % 1000000));
}
fprintf(stderr, "UP: %" CURL_FORMAT_CURL_OFF_T " of %" CURL_FORMAT_CURL_OFF_T
" DOWN: %" CURL_FORMAT_CURL_OFF_T " of %" CURL_FORMAT_CURL_OFF_T
"\r\n",
ulnow, ultotal, dlnow, dltotal);
if(dlnow > STOP_DOWNLOAD_AFTER_THIS_MANY_BYTES)
return 1;
return 0;
}
int main(void)
{
CURL *curl;
CURLcode res = CURLE_OK;
struct myprogress prog;
curl = curl_easy_init();
if(curl) {
prog.lastruntime = 0;
prog.curl = curl;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, xferinfo);
/* pass the struct pointer into the xferinfo function */
curl_easy_setopt(curl, CURLOPT_XFERINFODATA, &prog);
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
res = curl_easy_perform(curl);
if(res != CURLE_OK)
fprintf(stderr, "%s\n", curl_easy_strerror(res));
/* always cleanup */
curl_easy_cleanup(curl);
}
return (int)res;
}
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