You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
3.3 KiB
81 lines
3.3 KiB
4 months ago
|
.\" **************************************************************************
|
||
|
|
.\" * _ _ ____ _
|
||
|
|
.\" * Project ___| | | | _ \| |
|
||
|
|
.\" * / __| | | | |_) | |
|
||
|
|
.\" * | (__| |_| | _ <| |___
|
||
|
|
.\" * \___|\___/|_| \_\_____|
|
||
|
|
.\" *
|
||
|
|
.\" * Copyright (C) 1998 - 2020, 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.
|
||
|
|
.\" *
|
||
|
|
.\" **************************************************************************
|
||
|
|
.\"
|
||
|
|
.TH CURLOPT_PRE_PROXY 3 "September 16, 2020" "libcurl 7.73.0" "curl_easy_setopt options"
|
||
|
|
|
||
|
|
.SH NAME
|
||
|
|
CURLOPT_PRE_PROXY \- set pre-proxy to use
|
||
|
|
.SH SYNOPSIS
|
||
|
|
#include <curl/curl.h>
|
||
|
|
|
||
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PRE_PROXY, char *preproxy);
|
||
|
|
.SH DESCRIPTION
|
||
|
|
Set the \fIpreproxy\fP to use for the upcoming request. The parameter
|
||
|
|
should be a char * to a null-terminated string holding the host name or dotted
|
||
|
|
numerical IP address. A numerical IPv6 address must be written within
|
||
|
|
[brackets].
|
||
|
|
|
||
|
|
To specify port number in this string, append :[port] to the end of the host
|
||
|
|
name. The proxy's port number may optionally be specified with the separate
|
||
|
|
option \fICURLOPT_PROXYPORT(3)\fP. If not specified, libcurl will default to
|
||
|
|
using port 1080 for proxies.
|
||
|
|
|
||
|
|
A pre proxy is a SOCKS proxy that curl connects to before it connects to the
|
||
|
|
HTTP(S) proxy specified in the \fICURLOPT_PROXY\fP option. The pre proxy can
|
||
|
|
only be a SOCKS proxy.
|
||
|
|
|
||
|
|
The pre proxy string should be prefixed with [scheme]:// to specify which kind
|
||
|
|
of socks is used. Use socks4://, socks4a://, socks5:// or socks5h:// (the last
|
||
|
|
one to enable socks5 and asking the proxy to do the resolving, also known as
|
||
|
|
\fICURLPROXY_SOCKS5_HOSTNAME\fP type) to request the specific SOCKS version to
|
||
|
|
be used. Otherwise SOCKS4 is used as default.
|
||
|
|
|
||
|
|
Setting the pre proxy string to "" (an empty string) will explicitly disable
|
||
|
|
the use of a pre proxy.
|
||
|
|
|
||
|
|
The application does not have to keep the string around after setting this
|
||
|
|
option.
|
||
|
|
.SH DEFAULT
|
||
|
|
Default is NULL, meaning no pre proxy is used.
|
||
|
|
|
||
|
|
When you set a host name to use, do not assume that there's any particular
|
||
|
|
single port number used widely for proxies. Specify it!
|
||
|
|
.SH PROTOCOLS
|
||
|
|
All except file://. Note that some protocols don't do very well over proxy.
|
||
|
|
.SH EXAMPLE
|
||
|
|
.nf
|
||
|
|
CURL *curl = curl_easy_init();
|
||
|
|
if(curl) {
|
||
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/file.txt");
|
||
|
|
curl_easy_setopt(curl, CURLOPT_PREPROXY, "socks4://socks-proxy:1080");
|
||
|
|
curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy:80");
|
||
|
|
curl_easy_perform(curl);
|
||
|
|
}
|
||
|
|
.fi
|
||
|
|
.SH AVAILABILITY
|
||
|
|
Added in 7.52.0
|
||
|
|
.SH RETURN VALUE
|
||
|
|
Returns CURLE_OK if proxies are supported, CURLE_UNKNOWN_OPTION if not, or
|
||
|
|
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
.BR CURLOPT_PROXY "(3), " CURLOPT_HTTPPROXYTUNNEL "(3), "
|