#include <iostream>
#include "boost/asio.hpp"

using namespace boost::asio;

int main(int argc, const char* argv[]) {
	io_service io_service;
	ip::tcp::socket::endpoint_type endpoint(
				ip::address_v4::from_string("127.0.0.1"), 9999);
	ip::tcp::socket tcp_socket(io_service);

	tcp_socket.async_connect(endpoint, [](const boost::system::error_code& ec) {
		if (ec.value() != boost::asio::error::connection_refused) {
			std::cout << "Expected error code " << boost::asio::error::connection_refused
					  << " but got " << ec.value() << std::endl;
		} else {
			std::cout << "got error code " << ec.value() << std::endl;
		}
	});

	io_service.run();
	return 0;
}