.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) Daniel Stenberg, , 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 .\" * .\" ************************************************************************** .\" .TH CURLOPT_PORT 3 "17 Jun 2014" libcurl libcurl .SH NAME CURLOPT_PORT \- remote port number to connect to .SH SYNOPSIS .nf #include CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PORT, long number); .fi .SH DESCRIPTION We discourage using this option since its scope is not obvious and hard to predict. Set the preferred port number in the URL instead. This option sets \fInumber\fP to be the remote port number to connect to, instead of the one specified in the URL or the default port for the used protocol. Usually, you just let the URL decide which port to use but this allows the application to override that. While this option accepts a 'long', a port number is an unsigned 16 bit number and therefore using a port number lower than zero or over 65535 will cause a \fBCURLE_BAD_FUNCTION_ARGUMENT\fP error. .SH DEFAULT By default this is 0 which makes it not used. This also makes port number zero impossible to set with this API. .SH PROTOCOLS Used for all protocols that speak to a port number. .SH EXAMPLE .nf CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin"); curl_easy_setopt(curl, CURLOPT_PORT, 8080L); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); } .fi .SH AVAILABILITY Always .SH RETURN VALUE Returns CURLE_OK .SH "SEE ALSO" .BR CURLOPT_STDERR "(3), " CURLOPT_DEBUGFUNCTION "(3), "