Материал из .Net Framework эксперт
Catch Socket exception
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
class MainClass
{
public static void Main()
{
IPAddress host = IPAddress.Parse("192.168.1.1");
IPEndPoint hostep = new IPEndPoint(host, 8000);
Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
sock.Connect(hostep);
} catch (SocketException e) {
Console.WriteLine("Problem connecting to host");
Console.WriteLine(e.ToString());
sock.Close();
return;
}
sock.Close();
}
}