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