mirror of
https://github.com/warmcat/libwebsockets.git
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78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
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/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010-2014 Andy Green <andy@warmcat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation:
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*
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* Some or all of this file is based on code from nghttp2, which has the
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* following license. Since it's more liberal than lws license, you're also
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* at liberty to get the original code from
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* https://github.com/tatsuhiro-t/nghttp2 under his liberal terms alone.
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*
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* nghttp2 - HTTP/2.0 C Library
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*
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* Copyright (c) 2012 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "private-libwebsockets.h"
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#ifndef LWS_NO_SERVER
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#if OPENSSL_VERSION_NUMBER >= 0x10002000L
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static int alpn_select_proto_cb(SSL* ssl,
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const unsigned char **out,
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unsigned char *outlen,
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const unsigned char *in, unsigned int inlen,
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void *arg)
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{
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lwsl_err((char *)in);
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return SSL_TLSEXT_ERR_OK; /* SSL_TLSEXT_ERR_NOACK */
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}
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#endif
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LWS_VISIBLE void
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lws_context_init_http2_ssl(struct libwebsocket_context *context)
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{
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#if OPENSSL_VERSION_NUMBER >= 0x10002000L
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// ALPN selection callback
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SSL_CTX_set_alpn_select_cb(context->ssl_ctx, alpn_select_proto_cb, NULL);
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lwsl_notice(" HTTP2 / ALPN enabled\n");
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#else
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lwsl_notice(" HTTP2 / ALPN configured but not supported by OpenSSL version\n");
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#endif // OPENSSL_VERSION_NUMBER >= 0x10002000L
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}
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#endif
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