mirror of
https://github.com/moparisthebest/curl
synced 2024-12-25 01:28:51 -05:00
81 lines
3.3 KiB
Groff
81 lines
3.3 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 2015, 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_FOLLOWLOCATION 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
|
|
.SH NAME
|
|
CURLOPT_FOLLOWLOCATION \- follow HTTP 3xx redirects
|
|
.SH SYNOPSIS
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FOLLOWLOCATION, long enable);
|
|
.SH DESCRIPTION
|
|
A long parameter set to 1 tells the library to follow any Location: header
|
|
that the server sends as part of an HTTP header in a 3xx response. The
|
|
Location: header can specify a relative or an absolute URL to follow.
|
|
|
|
libcurl will issue another request for the new URL and follow new Location:
|
|
headers all the way until no more such headers are returned.
|
|
\fICURLOPT_MAXREDIRS(3)\fP can be used to limit the number of redirects
|
|
libcurl will follow.
|
|
|
|
libcurl limits what protocols it automatically follows to. The accepted
|
|
protocols are set with \fICURLOPT_REDIR_PROTOCOLS(3)\fP. By default libcurl
|
|
will allow all protocols on redirect except those disabled for security
|
|
reasons: Since 7.19.4 FILE and SCP are disabled, and since 7.40.0 SMB and SMBS
|
|
are also disabled.
|
|
|
|
When following a Location:, the 3xx response code that redirected it also
|
|
dictates which request method it will use in the subsequent request: For 301,
|
|
302 and 303 responses libcurl will switch method to GET unless
|
|
\fICURLOPT_POSTREDIR(3)\fP instructs libcurl otherwise. All other 3xx codes
|
|
will make libcurl send the same method again.
|
|
|
|
For users who think the existing location following is too naive, too simple
|
|
or just lacks features, it is very easy to instead implement your own redirect
|
|
follow logic with the use of \fIcurl_easy_getinfo(3)\fP's
|
|
\fICURLINFO_REDIRECT_URL(3)\fP option instead of using
|
|
\fICURLOPT_FOLLOWLOCATION(3)\fP.
|
|
.SH DEFAULT
|
|
0, disabled
|
|
.SH PROTOCOLS
|
|
HTTP(S)
|
|
.SH EXAMPLE
|
|
.nf
|
|
CURL *curl = curl_easy_init();
|
|
if(curl) {
|
|
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
|
|
|
|
/* example.com is redirected, so we tell libcurl to follow redirection */
|
|
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
|
|
|
|
curl_easy_perform(curl);
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Along with HTTP
|
|
.SH RETURN VALUE
|
|
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
|
|
.SH "SEE ALSO"
|
|
.BR CURLOPT_REDIR_PROTOCOLS "(3), " CURLOPT_PROTOCOLS "(3), "
|
|
.BR CURLOPT_POSTREDIR "(3), "
|
|
.BR CURLINFO_REDIRECT_URL "(3), " CURLINFO_REDIRECT_COUNT "(3), "
|