using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
class MainClass
{
const int echoPort = 7;
[STAThread]
static void Main( string[] args )
{
Socket s = new Socket( AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp );
s.Connect( new IPEndPoint( IPAddress.Loopback, echoPort ) );
UTF8Encoding enc = new UTF8Encoding();
s.Send( enc.GetBytes( "test message" ) );
Byte[] buff = new Byte[ 1024 ];
s.Receive( buff );
System.Console.WriteLine( enc.GetString( buff ) );
}
}