{

boost::asio::io_service io_service;

//listen for new connection

boost::system::error_code ec;

boost::asio::ip::tcp::acceptor acceptor_(io_service, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), 1234 ));

boost::asio::ip::tcp::socket socket_(io_service);//socket creation

acceptor_.accept(socket_);//waiting for connection

//read operation

boost::asio::streambuf buf;

boost::asio::read_until( socket_, buf, "\n",ec);

if(ec){std::cout<<ec.message()<<std::endl; return 1;}

string data = boost::asio::buffer_cast<const char*>(buf.data());

cout << data << endl;

//write operation

boost::asio::write( socket_, boost::asio::buffer(data) ,ec);

if(ec){std::cout<<ec.message()<<std::endl; return 1;}

return 0;