| Author: Praveen 21 Nov 2008 | Member Level: Diamond | Rating:  Points: 2 |
http://www.devarticles.com/c/a/C-Sharp/Socket-Programming-in-C-sharp-Part-II/1/
hope this will help u
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| Author: Venkat Tammineni 21 Nov 2008 | Member Level: Gold | Rating: Points: 6 |
hi,
Socket Programming using .Net 2.0 System.Net.Socket
Socket is a communication mechanism where we use to connect client and the server. Basically the Server will listen to the client connections on specific port number. A client can connect to the Server by using the relevant hostname and the port number. Upon the successful client connection server will gets a new socket bound to a different port. It needs the original socket for listen to other client connections while communicating with the connected client. Below is the simple client /server example done using the .Net 2.0. Review the code & you will find it interesting. (I made it very simple to make you understand) You can modify the code to meet your needs.
Server Code:
class MyServer
{
//Listing to the client connections.
public void Listen()
{
byte[] ipArray = new byte[4];
ipArray[0] = 127;
ipArray[1] = 0;
ipArray[2] = 0;
ipArray[3] = 1;
IPAddress add = new IPAddress(ipArray);
//This is obselete in .Net 2.0
//TcpListener tcpListener = new TcpListener(10);
TcpListener tcpListener = new TcpListener(add, 10);
tcpListener.Start();
Socket socketForClient = tcpListener.AcceptSocket();
if (socketForClient.Connected)
{
Util.Out("client connected..");
NetworkStream netStream = new NetworkStream(socketForClient);
StreamWriter writer = new StreamWriter(netStream);
StreamReader reader = new StreamReader(netStream);
string str = "Message from Server : " + DateTime.Now.ToLongDateString();
writer.WriteLine(str);
Util.Out("What meessage do you want to send to client?");
writer.WriteLine(Console.ReadLine());
writer.Flush();
str = reader.ReadLine();
Util.Out(str);
reader.Close();
writer.Close();
netStream.Close();
}
socketForClient.Close();
Util.Out("Exiting...");
}
}
Client Code :
public class MyClient
{
//Connects to the server
public void Connect()
{
TcpClient socketForServer = null;
try
{
socketForServer = new TcpClient("localhost", 10);
Util.Out("Connected to the Server");
}
catch
{
Util.Out("Failed to connecto localhost");
Util.Out("Exiting..");
return;
}
NetworkStream netstream = socketForServer.GetStream();
StreamReader reader = new StreamReader(netstream);
StreamWriter writer = new StreamWriter(netstream);
try
{
string output1, output2;
output1 = reader.ReadLine();
output2 = reader.ReadLine();
Util.Out(output1);
Util.Out(output2);
writer.Flush();
reader.Close();
}
catch
{
Util.Out("Exception Occured! Exiting...");
}
netstream.Close();
}
}
This is small helper class…
public class Util
{
public static void Out(string s)
{
Console.WriteLine(s);
}
}
This is a simple console application. You can create two console application one for the server & one for the client. Run the server first then client app. If you want you can create nice windows applications using this two simple classes to communicate over network.
Thanks
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