echo_client.cpp

// Bodie Solomon 2013
// TCP Echo client

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

#define MAX_LENGTH 1024

using boost::asio::ip::tcp;

int main( int argc, char** argv )
{
	char message[ MAX_LENGTH ];
	char reply[ MAX_LENGTH ];

	memset( message, 0, MAX_LENGTH );
	memset( reply, 0, MAX_LENGTH );

	try
	{
		if( argc != 2 )
		{
			std::cerr << "Usage: tcli <host>" << std::endl;
			return 1;
		}

		boost::asio::io_service ios;
		tcp::resolver resolver( ios );
		tcp::resolver::query query( tcp::v4( ), argv[1], "7" );
		tcp::resolver::iterator endpoints = resolver.resolve( query );
		tcp::socket socket( ios );
		boost::asio::connect( socket, endpoints );

		while( true )
		{
			std::cout << "Message: ";
			std::cin.getline( message, MAX_LENGTH );
			size_t message_len = strlen( message );
			boost::asio::write( socket, boost::asio::buffer( message, message_len ) );

			size_t reply_len = boost::asio::read( socket, boost::asio::buffer( reply, message_len ) );

			std::cout << "Server replied: ";
			std::cout.write( reply, reply_len );
			std::cout << std::endl;

			memset( reply, 0, MAX_LENGTH );
			memset( message, 0, MAX_LENGTH );
		}
	}

	catch( std::exception& e )
	{
		std::cerr << e.what( ) << std::endl;
	}

	return 0;
}

This doesn't work. Maybe I will make it work one day. :)