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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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2015-05-21 08:17:17 -04:00
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.\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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2016-02-02 18:19:02 -05:00
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.\" * are also available at https://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_HTTPPROXYTUNNEL 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_HTTPPROXYTUNNEL \- tunnel through HTTP proxy
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTPPROXYTUNNEL, long tunnel);
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.SH DESCRIPTION
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Set the parameter to 1 to make libcurl tunnel all operations through the HTTP
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proxy. There is a big difference between using a proxy and to tunnel through
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it. If you don't know what this means, you probably don't want this tunneling
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option.
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Tunneling essentially means that a CONNECT is sent to the proxy, asking it to
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connect to a remote host on a specific port number and then the traffic is
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just passed through the proxy. Proxies tend to whitelist specific port numbers
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it allows CONNECT requests to and often only port 80 and 443 are allowed.
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When using this, it only makes sense to use \fICURLOPT_PROXYTYPE(3)\fP set to
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a HTTP proxy.
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.SH DEFAULT
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0
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.SH PROTOCOLS
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All network protocols
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.SH EXAMPLE
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TODO
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.SH AVAILABILITY
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Always
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.SH RETURN VALUE
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Returns CURLE_OK
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.SH "SEE ALSO"
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.BR CURLOPT_PROXY "(3), " CURLOPT_PROXYTYPE "(3), " CURLOPT_PROXYPORT "(3), "
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