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67 lines
2.9 KiB
Groff
67 lines
2.9 KiB
Groff
.\" **************************************************************************
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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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.\" * Copyright (C) 1998 - 2014, 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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.\" * are also available at http://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_RESOLVE 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_RESOLVE \- provide custom host name to IP address resolves
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESOLVE,
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struct curl_slist *hosts);
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.SH DESCRIPTION
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Pass a pointer to a linked list of strings with host name resolve information
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to use for requests with this handle. The linked list should be a fully valid
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list of \fBstruct curl_slist\fP structs properly filled in. Use
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\fIcurl_slist_append(3)\fP to create the list and \fIcurl_slist_free_all(3)\fP
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to clean up an entire list.
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Each single name resolve string should be written using the format
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HOST:PORT:ADDRESS where HOST is the name libcurl will try to resolve, PORT is
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the port number of the service where libcurl wants to connect to the HOST and
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ADDRESS is the numerical IP address. If libcurl is built to support IPv6,
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ADDRESS can of course be either IPv4 or IPv6 style addressing.
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This option effectively pre-populates the DNS cache with entries for the
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host+port pair so redirects and everything that operations against the
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HOST+PORT will instead use your provided ADDRESS. Addresses to set with
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\fICURL_RESOLVE\fP will not time-out from the DNS cache like ordinary
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entries.
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You can remove names from the DNS cache again, to stop providing these fake
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resolves, by including a string in the linked list that uses the format
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\&"-HOST:PORT". The host name must be prefixed with a dash, and the host name
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and port number must exactly match what was already added previously.
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.SH DEFAULT
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NULL
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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TODO
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.SH AVAILABILITY
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Added in 7.21.3
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH "SEE ALSO"
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.BR CURLOPT_IPRESOLVE "(3), " CURLOPT_DNS_CACHE_TIMEOUT "(3), "
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