86 lines
3.2 KiB
C#
86 lines
3.2 KiB
C#
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using System;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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// Client app is the one sending messages to a Server/listener.
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// Both listener and client can send messages back and forth once a
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// communication is established.
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public class SocketClient
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{
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public static int Main(String[] args)
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{
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StartClient();
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Console.WriteLine("\n Press any key to continue...");
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Console.ReadKey();
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return 0;
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}
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public static void StartClient()
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{
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byte[] bytes = new byte[1024];
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try
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{
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// Connect to a Remote server
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// Get Host IP Address that is used to establish a connection
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// In this case, we get one IP address of localhost that is IP : 127.0.0.1
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// If a host has multiple addresses, you will get a list of addresses
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//IPHostEntry host = Dns.GetHostEntry("localhost");
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//IPAddress ipAddress = host.AddressList[0];
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IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
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IPEndPoint remoteEP = new IPEndPoint(ipAddress, 11000);
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// Create a TCP/IP socket.
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Socket sender = new Socket(ipAddress.AddressFamily,
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SocketType.Stream, ProtocolType.Tcp);
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// Connect the socket to the remote endpoint. Catch any errors.
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try
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{
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// Connect to Remote EndPoint
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sender.Connect(remoteEP);
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Console.WriteLine("Socket connected to {0}",
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sender.RemoteEndPoint.ToString());
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// Encode the data string into a byte array.
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byte[] msg = Encoding.ASCII.GetBytes("This is a test<EOF>");
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// Send the data through the socket.
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int bytesSent = sender.Send(msg);
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// Receive the response from the remote device.
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int bytesRec = sender.Receive(bytes);
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Console.WriteLine("Echoed test = {0}",
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Encoding.ASCII.GetString(bytes, 0, bytesRec));
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// Release the socket.
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sender.Shutdown(SocketShutdown.Both);
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sender.Close();
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}
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catch (ArgumentNullException ane)
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{
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Console.WriteLine("ArgumentNullException : {0}", ane.ToString());
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}
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catch (SocketException se)
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{
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Console.WriteLine("SocketException : {0}", se.ToString());
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}
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catch (Exception e)
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{
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Console.WriteLine("Unexpected exception : {0}", e.ToString());
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}
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}
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catch (Exception e)
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{
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Console.WriteLine(e.ToString());
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}
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}
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}
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