2014-06-19 18:58:18 -04:00
|
|
|
.\" **************************************************************************
|
|
|
|
|
.\" * _ _ ____ _
|
|
|
|
|
.\" * Project ___| | | | _ \| |
|
|
|
|
|
.\" * / __| | | | |_) | |
|
|
|
|
|
.\" * | (__| |_| | _ <| |___
|
|
|
|
|
.\" * \___|\___/|_| \_\_____|
|
|
|
|
|
.\" *
|
2017-05-31 05:56:28 -04:00
|
|
|
.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
|
2014-06-19 18:58:18 -04:00
|
|
|
.\" *
|
|
|
|
|
.\" * This software is licensed as described in the file COPYING, which
|
|
|
|
|
.\" * you should have received as part of this distribution. The terms
|
2020-11-04 08:02:01 -05:00
|
|
|
.\" * are also available at https://curl.se/docs/copyright.html.
|
2014-06-19 18:58:18 -04:00
|
|
|
.\" *
|
|
|
|
|
.\" * 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_SSL_ENABLE_ALPN 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
|
|
|
|
|
.SH NAME
|
|
|
|
|
CURLOPT_SSL_ENABLE_ALPN \- enable ALPN
|
|
|
|
|
.SH SYNOPSIS
|
|
|
|
|
#include <curl/curl.h>
|
|
|
|
|
|
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_ENABLE_ALPN, long npn);
|
|
|
|
|
.SH DESCRIPTION
|
2014-06-21 14:03:35 -04:00
|
|
|
Pass a long as parameter, 0 or 1 where 1 is for enable and 0 for disable. This
|
|
|
|
|
option enables/disables ALPN in the SSL handshake (if the SSL backend libcurl
|
|
|
|
|
is built to use supports it), which can be used to negotiate http2.
|
2014-06-19 18:58:18 -04:00
|
|
|
.SH DEFAULT
|
2014-06-21 14:03:35 -04:00
|
|
|
1, enabled
|
2014-06-19 18:58:18 -04:00
|
|
|
.SH PROTOCOLS
|
|
|
|
|
HTTP
|
|
|
|
|
.SH EXAMPLE
|
2017-05-31 05:56:28 -04:00
|
|
|
.nf
|
|
|
|
|
CURL *curl = curl_easy_init();
|
|
|
|
|
if(curl) {
|
|
|
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
|
|
|
|
|
curl_easy_setopt(curl, CURLOPT_SSL_ENABLE_ALPN, 0L);
|
|
|
|
|
ret = curl_easy_perform(curl);
|
|
|
|
|
curl_easy_cleanup(curl);
|
|
|
|
|
}
|
|
|
|
|
.fi
|
2014-06-19 18:58:18 -04:00
|
|
|
.SH AVAILABILITY
|
|
|
|
|
Added in 7.36.0
|
|
|
|
|
.SH RETURN VALUE
|
|
|
|
|
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|
|
|
|
|
.SH "SEE ALSO"
|
|
|
|
|
.BR CURLOPT_SSL_ENABLE_NPN "(3), " CURLOPT_SSL_OPTIONS "(3), "
|
