Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_PRE_PROXY.3 @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 .\" **************************************************************************
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2 .\" * _ _ ____ _
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3 .\" * Project ___| | | | _ \| |
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4 .\" * / __| | | | |_) | |
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5 .\" * | (__| |_| | _ <| |___
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6 .\" * \___|\___/|_| \_\_____|
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7 .\" *
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8 .\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 .\" *
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10 .\" * This software is licensed as described in the file COPYING, which
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11 .\" * you should have received as part of this distribution. The terms
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12 .\" * are also available at https://curl.haxx.se/docs/copyright.html.
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13 .\" *
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14 .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 .\" * copies of the Software, and permit persons to whom the Software is
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16 .\" * furnished to do so, under the terms of the COPYING file.
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17 .\" *
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18 .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 .\" * KIND, either express or implied.
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20 .\" *
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21 .\" **************************************************************************
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22 .\"
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23 .TH CURLOPT_PRE_PROXY 3 "16 Nov 2016" "libcurl 7.52.0" "curl_easy_setopt options"
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24 .SH NAME
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25 CURLOPT_PRE_PROXY \- set pre-proxy to use
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26 .SH SYNOPSIS
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27 #include <curl/curl.h>
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29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PRE_PROXY, char *preproxy);
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30 .SH DESCRIPTION
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31 Set the \fIpreproxy\fP to use for the upcoming request. The parameter
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32 should be a char * to a zero terminated string holding the host name or dotted
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33 numerical IP address. A numerical IPv6 address must be written within
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34 [brackets].
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35
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36 To specify port number in this string, append :[port] to the end of the host
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37 name. The proxy's port number may optionally be specified with the separate
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38 option \fICURLOPT_PROXYPORT(3)\fP. If not specified, libcurl will default to
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39 using port 1080 for proxies.
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40
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41 A pre proxy is a SOCKS proxy that curl connects to before it connects to the
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42 HTTP(S) proxy specified in the \fICURLOPT_PROXY\fP option. The pre proxy can
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43 only be a SOCKS proxy.
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44
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45 The pre proxy string should be prefixed with [scheme]:// to specify which kind
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46 of socks is used. Use socks4://, socks4a://, socks5:// or socks5h:// (the last
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47 one to enable socks5 and asking the proxy to do the resolving, also known as
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48 \fICURLPROXY_SOCKS5_HOSTNAME\fP type) to request the specific SOCKS version to
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49 be used. Otherwise SOCKS4 is used as default.
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50
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51 Setting the pre proxy string to "" (an empty string) will explicitly disable
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52 the use of a pre proxy.
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53
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54 The application does not have to keep the string around after setting this
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55 option.
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56 .SH DEFAULT
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57 Default is NULL, meaning no pre proxy is used.
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58
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59 When you set a host name to use, do not assume that there's any particular
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60 single port number used widely for proxies. Specify it!
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61 .SH PROTOCOLS
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62 All except file://. Note that some protocols don't do very well over proxy.
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63 .SH EXAMPLE
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64 .nf
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65 CURL *curl = curl_easy_init();
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66 if(curl) {
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67 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/file.txt");
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68 curl_easy_setopt(curl, CURLOPT_PREPROXY, "socks4://socks-proxy:1080");
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69 curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy:80");
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70 curl_easy_perform(curl);
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71 }
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72 .fi
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73 .SH AVAILABILITY
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74 Added in 7.52.0
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75 .SH RETURN VALUE
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76 Returns CURLE_OK if proxies are supported, CURLE_UNKNOWN_OPTION if not, or
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77 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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78 .SH "SEE ALSO"
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79 .BR CURLOPT_PROXY "(3), " CURLOPT_HTTPPROXYTUNNEL "(3), "