Uso de Sockets en C#

Sockets en C#

En el siguiente escrito se tratara de explicar como implementar una pequeña aplicación haciendo uso de los famosos sockets.

En este ejemplo utilizaremos el IDE SharpDevelop, ustedes pueden usar el IDe que mas les agrade, manos a la obra:

Codigo del Servidor:


using System;
using System.Net.Sockets;
public class AsynchIOServer
{
public static void Main()
{
TCPListener tcpListener = new TCPListener(10);
tcpListener.Start();
Socket socketForClient = tcpListener.Accept();
if (socketForClient.Connected)
{
Console.WriteLine("Client connected");
NetworkStream networkStream = new NetworkStream(socketForClient);
System.IO.StreamWriter streamWriter =
new System.IO.StreamWriter(networkStream);
System.IO.StreamReader streamReader =
new System.IO.StreamReader(networkStream);
string theString = "Sending";
streamWriter.WriteLine(theString);
Console.WriteLine(theString);
streamWriter.Flush();
theString = streamReader.ReadLine();
Console.WriteLine(theString);
streamReader.Close();
networkStream.Close();
streamWriter.Close();
}
socketForClient.Close();
Console.WriteLine("Exiting...");
}
}

Codigo del Cliente:

using System;
using System.Net.Sockets;
public class Client
{
static public void Main( string[] Args )
{
TCPClient socketForServer;
try
{
socketForServer = new TCPClient("localHost", 10);
}
catch
{
Console.WriteLine(
"Failed to connect to server at {0}:999", "localhost");
return;
}
NetworkStream networkStream = socketForServer.GetStream();
System.IO.StreamReader streamReader =
new System.IO.StreamReader(networkStream);
System.IO.StreamWriter streamWriter =
new System.IO.StreamWriter(networkStream);
try
{
string outputString;
// read the data from the host and display it
{
outputString = streamReader.ReadLine();
Console.WriteLine(outputString);
streamWriter.WriteLine("Client Message");
Console.WriteLine("Client Message");
streamWriter.Flush();
}
}
catch
{
Console.WriteLine("Exception reading from Server");
}
// tidy up
networkStream.Close();
}
}