nghttp2/src/asio_server.cc

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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2014 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.
*/
// We wrote this code based on the original code which has the
// following license:
//
// server.cpp
// ~~~~~~~~~~
//
// Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "asio_server.h"
#include "asio_server_connection.h"
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#include "asio_common.h"
#include "util.h"
namespace nghttp2 {
namespace asio_http2 {
namespace server {
server::server(std::size_t io_service_pool_size,
const boost::posix_time::time_duration &tls_handshake_timeout,
const boost::posix_time::time_duration &read_timeout)
: io_service_pool_(io_service_pool_size),
tls_handshake_timeout_(tls_handshake_timeout),
read_timeout_(read_timeout) {}
boost::system::error_code
server::listen_and_serve(boost::system::error_code &ec,
boost::asio::ssl::context *tls_context,
const std::string &address, const std::string &port,
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int backlog, serve_mux &mux, bool asynchronous) {
ec.clear();
if (bind_and_listen(ec, address, port, backlog)) {
return ec;
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}
for (auto &acceptor : acceptors_) {
if (tls_context) {
start_accept(*tls_context, acceptor, mux);
} else {
start_accept(acceptor, mux);
}
}
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io_service_pool_.run(asynchronous);
return ec;
}
boost::system::error_code server::bind_and_listen(boost::system::error_code &ec,
const std::string &address,
const std::string &port,
int backlog) {
// Open the acceptor with the option to reuse the address (i.e.
// SO_REUSEADDR).
tcp::resolver resolver(io_service_pool_.get_io_service());
tcp::resolver::query query(address, port);
auto it = resolver.resolve(query, ec);
if (ec) {
return ec;
}
for (; it != tcp::resolver::iterator(); ++it) {
tcp::endpoint endpoint = *it;
auto acceptor = tcp::acceptor(io_service_pool_.get_io_service());
if (acceptor.open(endpoint.protocol(), ec)) {
continue;
}
acceptor.set_option(tcp::acceptor::reuse_address(true));
if (acceptor.bind(endpoint, ec)) {
continue;
}
if (acceptor.listen(
backlog == -1 ? boost::asio::socket_base::max_connections : backlog,
ec)) {
continue;
}
acceptors_.push_back(std::move(acceptor));
}
if (acceptors_.empty()) {
return ec;
}
// ec could have some errors since we may have failed to bind some
// interfaces.
ec.clear();
return ec;
}
void server::start_accept(boost::asio::ssl::context &tls_context,
tcp::acceptor &acceptor, serve_mux &mux) {
if (!acceptor.is_open()) {
return;
}
auto new_connection = std::make_shared<connection<ssl_socket>>(
mux, tls_handshake_timeout_, read_timeout_,
io_service_pool_.get_io_service(), tls_context);
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acceptor.async_accept(
new_connection->socket().lowest_layer(),
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[this, &tls_context, &acceptor, &mux,
new_connection](const boost::system::error_code &e) {
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if (!e) {
new_connection->socket().lowest_layer().set_option(
tcp::no_delay(true));
new_connection->start_tls_handshake_deadline();
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new_connection->socket().async_handshake(
boost::asio::ssl::stream_base::server,
[new_connection](const boost::system::error_code &e) {
if (e) {
new_connection->stop();
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return;
}
if (!tls_h2_negotiated(new_connection->socket())) {
new_connection->stop();
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return;
}
new_connection->start();
});
}
start_accept(tls_context, acceptor, mux);
});
}
void server::start_accept(tcp::acceptor &acceptor, serve_mux &mux) {
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if (!acceptor.is_open()) {
return;
}
auto new_connection = std::make_shared<connection<tcp::socket>>(
mux, tls_handshake_timeout_, read_timeout_,
io_service_pool_.get_io_service());
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acceptor.async_accept(
new_connection->socket(), [this, &acceptor, &mux, new_connection](
const boost::system::error_code &e) {
if (!e) {
new_connection->socket().set_option(tcp::no_delay(true));
new_connection->start_read_deadline();
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new_connection->start();
}
if (acceptor.is_open()) {
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start_accept(acceptor, mux);
}
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});
}
void server::stop() {
for (auto &acceptor : acceptors_) {
acceptor.close();
}
io_service_pool_.stop();
}
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void server::join() { io_service_pool_.join(); }
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const std::vector<std::shared_ptr<boost::asio::io_service>> &
server::io_services() const {
return io_service_pool_.io_services();
}
} // namespace server
} // namespace asio_http2
} // namespace nghttp2