1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2011, 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 http://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#include <stdio.h> 23#include <curl/curl.h> 24 25#define STOP_DOWNLOAD_AFTER_THIS_MANY_BYTES 6000 26#define MINIMAL_PROGRESS_FUNCTIONALITY_INTERVAL 3 27 28struct myprogress { 29 double lastruntime; 30 CURL *curl; 31}; 32 33static int progress(void *p, 34 double dltotal, double dlnow, 35 double ultotal, double ulnow) 36{ 37 struct myprogress *myp = (struct myprogress *)p; 38 CURL *curl = myp->curl; 39 double curtime = 0; 40 41 curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &curtime); 42 43 /* under certain circumstances it may be desirable for certain functionality 44 to only run every N seconds, in order to do this the transaction time can 45 be used */ 46 if((curtime - myp->lastruntime) >= MINIMAL_PROGRESS_FUNCTIONALITY_INTERVAL) { 47 myp->lastruntime = curtime; 48 fprintf(stderr, "TOTAL TIME: %f \r\n", curtime); 49 } 50 51 fprintf(stderr, "UP: %g of %g DOWN: %g of %g\r\n", 52 ulnow, ultotal, dlnow, dltotal); 53 54 if(dlnow > STOP_DOWNLOAD_AFTER_THIS_MANY_BYTES) 55 return 1; 56 return 0; 57} 58 59int main(void) 60{ 61 CURL *curl; 62 CURLcode res = CURLE_OK; 63 struct myprogress prog; 64 65 curl = curl_easy_init(); 66 if(curl) { 67 prog.lastruntime = 0; 68 prog.curl = curl; 69 70 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/"); 71 curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress); 72 /* pass the struct pointer into the progress function */ 73 curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &prog); 74 curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L); 75 res = curl_easy_perform(curl); 76 77 if(res != CURLE_OK) 78 fprintf(stderr, "%s\n", curl_easy_strerror(res)); 79 80 /* always cleanup */ 81 curl_easy_cleanup(curl); 82 } 83 return (int)res; 84} 85