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//
// Copyright (c) 2011 Thomas Heller
//
// 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 <cstdlib>
#include <iostream>
#define BOOST_PHOENIX_NO_PREDEFINED_TERMINALS
#include <boost/phoenix.hpp>
#include <boost/asio.hpp>
namespace phx = boost::phoenix;
using boost::phoenix::ref;
BOOST_PHOENIX_ADAPT_FUNCTION(void, read, boost::asio::async_read, 4)
BOOST_PHOENIX_ADAPT_FUNCTION(void, write, boost::asio::async_write, 3)
BOOST_PHOENIX_ADAPT_FUNCTION(boost::asio::mutable_buffers_1, buffer, boost::asio::buffer, 2)
template <typename Acceptor, typename Socket, typename Handler>
void accept_impl(Acceptor & acceptor, Socket & socket, Handler const & handler)
{
acceptor.async_accept(socket, handler);
}
BOOST_PHOENIX_ADAPT_FUNCTION(void, accept, accept_impl, 3)
typedef phx::expression::local_variable<struct action_key>::type action;
#include <boost/function.hpp>
int main(int argc, char* argv[])
{
try
{
if (argc != 2)
{
std::cerr << "Usage: async_tcp_echo_server <port>\n";
return 1;
}
phx::lambda_type lambda;
phx::arg_names::_1_type _1;
boost::asio::io_service io_service;
boost::asio::ip::tcp::acceptor acceptor(io_service, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), std::atoi(argv[1])));
boost::asio::ip::tcp::socket socket(io_service);
std::size_t const max_length = 1024;
char buf[max_length];
std::cout << "server starting...\n";
boost::function<void(boost::system::error_code const &)> accept_handler;
phx::expression::argument<1>::type _error;
phx::expression::argument<2>::type _length;
action _action;
BOOST_AUTO(
create_handler
, (lambda(_action = lambda[_1])
[
if_(!_error)
[
bind(_action, ref(socket), ref(buf), _error, _length)
]
.else_
[
bind(&boost::asio::ip::tcp::socket::close, ref(socket))
, accept(ref(acceptor), ref(socket), phx::ref(accept_handler))
]
])
);
boost::function<void(boost::system::error_code const &, std::size_t)> read_handler;
boost::function<void(boost::system::error_code const &, std::size_t)> write_handler;
accept_handler =
if_(!_error)
[
read(ref(socket), buffer(ref(buf), max_length), boost::asio::transfer_at_least(1), phx::ref(read_handler))
];
{
phx::expression::argument<1>::type _socket;
phx::expression::argument<2>::type _buf;
phx::expression::argument<3>::type _error;
phx::expression::argument<4>::type _length;
read_handler = create_handler(
write(_socket, buffer(_buf, _length), phx::ref(write_handler))
);
write_handler = create_handler(
read(_socket, buffer(_buf, max_length), boost::asio::transfer_at_least(1), phx::ref(read_handler))
);
}
acceptor.async_accept(
socket
, accept_handler
);
io_service.run();
}
catch (std::exception& e)
{
std::cerr << "Exception: " << e.what() << "\n";
}
return 0;
}
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