| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 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. |
| * |
| * SPDX-License-Identifier: curl |
| * |
| ***************************************************************************/ |
| /* <DESC> |
| * Use CURLOPT_LOCALPORT to control local port number |
| * </DESC> |
| */ |
| #include <stdio.h> |
| #include <curl/curl.h> |
| |
| int main(void) |
| { |
| CURL *curl; |
| CURLcode res = CURLE_OK; |
| |
| curl = curl_easy_init(); |
| if(curl) { |
| /* Try to use a local port number between 20000-20009 */ |
| curl_easy_setopt(curl, CURLOPT_LOCALPORT, 20000L); |
| /* 10 means number of attempts, which starts with the number set in |
| CURLOPT_LOCALPORT. The lower value set, the smaller the chance it |
| works. */ |
| curl_easy_setopt(curl, CURLOPT_LOCALPORTRANGE, 10L); |
| curl_easy_setopt(curl, CURLOPT_URL, "https://curl.se/"); |
| |
| res = curl_easy_perform(curl); |
| |
| /* always cleanup */ |
| curl_easy_cleanup(curl); |
| } |
| |
| return (int)res; |
| } |