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//
// server.cpp
// ~~~~~~~~~~
//
// Copyright (c) 2003-2012 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 "server.hpp"
#include <boost/bind.hpp>
#include <signal.h>
namespace http {
namespace server {
server::server(const std::string& address, const std::string& port,
const std::string& doc_root)
: io_service_(),
signals_(io_service_),
acceptor_(io_service_),
connection_manager_(),
new_connection_(),
request_handler_(doc_root)
{
// Register to handle the signals that indicate when the server should exit.
// It is safe to register for the same signal multiple times in a program,
// provided all registration for the specified signal is made through Asio.
signals_.add(SIGINT);
signals_.add(SIGTERM);
#if defined(SIGQUIT)
signals_.add(SIGQUIT);
#endif // defined(SIGQUIT)
signals_.async_wait(boost::bind(&server::handle_stop, this));
// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::resolver::query query(address, port);
boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
acceptor_.open(endpoint.protocol());
acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor_.bind(endpoint);
acceptor_.listen();
start_accept();
}
void server::run()
{
// The io_service::run() call will block until all asynchronous operations
// have finished. While the server is running, there is always at least one
// asynchronous operation outstanding: the asynchronous accept call waiting
// for new incoming connections.
io_service_.run();
}
void server::start_accept()
{
new_connection_.reset(new connection(io_service_,
connection_manager_, request_handler_));
acceptor_.async_accept(new_connection_->socket(),
boost::bind(&server::handle_accept, this,
boost::asio::placeholders::error));
}
void server::handle_accept(const boost::system::error_code& e)
{
// Check whether the server was stopped by a signal before this completion
// handler had a chance to run.
if (!acceptor_.is_open())
{
return;
}
if (!e)
{
connection_manager_.start(new_connection_);
}
start_accept();
}
void server::handle_stop()
{
// The server is stopped by cancelling all outstanding asynchronous
// operations. Once all operations have finished the io_service::run() call
// will exit.
acceptor_.close();
connection_manager_.stop_all();
}
} // namespace server
} // namespace http
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