nghttp2/src/asio_client_tls_context.cc

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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2015 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 "asio_client_tls_context.h"
#include <openssl/ssl.h>
#include <boost/asio/ssl.hpp>
#include "ssl.h"
#include "util.h"
namespace nghttp2 {
namespace asio_http2 {
namespace client {
namespace {
int client_select_next_proto_cb(SSL *ssl, unsigned char **out,
unsigned char *outlen, const unsigned char *in,
unsigned int inlen, void *arg) {
if (!util::select_h2(const_cast<const unsigned char **>(out), outlen, in,
inlen)) {
return SSL_TLSEXT_ERR_NOACK;
}
return SSL_TLSEXT_ERR_OK;
}
} // namespace
boost::system::error_code
configure_tls_context(boost::system::error_code &ec,
boost::asio::ssl::context &tls_ctx) {
ec.clear();
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auto ctx = tls_ctx.native_handle();
SSL_CTX_set_next_proto_select_cb(ctx, client_select_next_proto_cb, nullptr);
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#if OPENSSL_VERSION_NUMBER >= 0x10002000L
auto proto_list = util::get_default_alpn();
SSL_CTX_set_alpn_protos(ctx, proto_list.data(), proto_list.size());
#endif // OPENSSL_VERSION_NUMBER >= 0x10002000L
return ec;
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}
} // namespace client
} // namespace asio_http2
} // namespace nghttp2