/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2017, 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> * Connection cache shared between easy handles with the share interface * </DESC> */ #include <stdio.h> #include <curl/curl.h> static void my_lock(CURL *handle, curl_lock_data data, curl_lock_access laccess, void *useptr) { (void)handle; (void)data; (void)laccess; (void)useptr; fprintf(stderr, "-> Mutex lock\n"); } static void my_unlock(CURL *handle, curl_lock_data data, void *useptr) { (void)handle; (void)data; (void)useptr; fprintf(stderr, "<- Mutex unlock\n"); } int main(void) { CURL *curl; CURLcode res; CURLSH *share; int i; share = curl_share_init(); curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT); curl_share_setopt(share, CURLSHOPT_LOCKFUNC, my_lock); curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, my_unlock); /* Loop the transfer and cleanup the handle properly every lap. This will still reuse connections since the pool is in the shared object! */ for(i = 0; i < 3; i++) { curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://curl.haxx.se/"); /* use the share object */ curl_easy_setopt(curl, CURLOPT_SHARE, share); /* Perform the request, res will get the return code */ res = curl_easy_perform(curl); /* Check for errors */ if(res != CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); /* always cleanup */ curl_easy_cleanup(curl); } } curl_share_cleanup(share); return 0; }