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Diffstat (limited to 'docs/examples/localport.c')
-rw-r--r-- | docs/examples/localport.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/docs/examples/localport.c b/docs/examples/localport.c new file mode 100644 index 000000000..56e0b62cf --- /dev/null +++ b/docs/examples/localport.c @@ -0,0 +1,53 @@ +/*************************************************************************** + * _ _ ____ _ + * 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 lowe value set, the smaller the change it will + work. */ + 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; +} |