{

if(argc != 4)

{

std::cout<<"Wrong parameter\n"<<"Example usage ./client 127.0.0.1 1234 hello"<<std::endl;

return -1;

}

auto const address = boost::asio::ip::make_address(argv[1]);

auto const port = std::atoi(argv[2]);

std::string msg = argv[3];

msg = msg + '\n';

boost::asio::io_service io_service;

//socket creation

boost::asio::ip::tcp::socket socket(io_service);

//connection

boost::system::error_code ec;

socket.connect( boost::asio::ip::tcp::endpoint( address, port ),ec);

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

// request/message from client

//const string msg = "Hello from Client!\n";

boost::system::error_code error;

boost::asio::write( socket, boost::asio::buffer(msg), error );

if(error)

{

std::cout << "send failed: " << error.message() << std::endl;

}

// getting response from server

boost::asio::streambuf receive_buffer;

boost::asio::read(socket, receive_buffer, boost::asio::transfer_all(), error);

if( error && error != boost::asio::error::eof ) {

std::cout << "receive failed: " << error.message() << std::endl;

}

else {

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

std::cout << data << std::endl;

}

return 0;