/************************************************************
ServerForm.cs
CopyRight 2000-2001
This is a sample program made by Saurabh Nandu.
E-mail: saurabh@mastercsharp.com
Website: http://www.mastercsharp.com
Socket Chat
Compilation:
csc /t:winexe /out:..\ChatServer.exe ServerForm.cs Client.cs
11/September/2001
************************************************************/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using System.Net;
using System.Net.Sockets;
namespace SocketServer
{
//Public delegate
public delegate void LogUpdater(string msg);
public class Form1 : System.Windows.Forms.Form
{
//Private Variables
private System.Windows.Forms.ListBox logBox;
private Thread serverThread;
private TcpListener serverListener;
private Hashtable clientTable;
private System.ComponentModel.Container components = null;
public Form1()
{
InitializeComponent();
clientTable = new Hashtable();
//Start a thread on the startListen method
serverThread = new Thread(new ThreadStart(startListen));
serverThread.Start();
AddLog("Socket Server Started");
}
public void startListen()
{
try
{
//Start the tcpListner
serverListener = new TcpListener(5151);
serverListener.Start();
do
{
//Create a new class when a new Chat Client connects
Client newClient = new Client(serverListener.AcceptTcpClient());
//Attach the Delegates
newClient.Disconnected+= new DisconnectDelegate(OnDisconnected);
newClient.Connected+=new ConnectDelegate(this.OnConnected);
newClient.MessageReceived+=new MessageDelegate(OnMessageReceived);
//Connect to the clients
newClient.Connect();
}
while(true);
}
catch
{
serverListener.Stop();
}
}
//EvntsHandler fo the Connected event
public void OnConnected(object sender, EventArgs e)
{
//Get the client that raised the vent
Client temp = (Client)sender;
//Add the client to the Hashtable
clientTable.Add(temp.ID,temp);
Client tempClient;
AddLog("Client Connected:"+temp.UserName);
//loop through each client and announce the
//client connected
foreach(DictionaryEntry d in clientTable)
{
tempClient =(Client)d.Value;
tempClient.Send(tempClient.ID+"@Connected@"+temp.UserName);
}
}
public void OnDisconnected(object sender, EventArgs e)
{
//Get the Client that raised the Event
Client temp =(Client)sender;
//If the Client exists in the Hashtable
if(clientTable.ContainsKey(temp.ID))
{
AddLog("Client Disconnected:"+temp.UserName);
//Remove the client from the hashtable
clientTable.Remove(temp.ID);
//Remove the client from the ClientList class
ClientList.RemoveClient(temp.UserName,temp.ID);
Client tempClient;
//Announce to all the existing clients
foreach(DictionaryEntry d in clientTable)
{
tempClient =(Client)d.Value;
tempClient.Send(tempClient.ID+"@Disconnected@"+temp.UserName);
}
}
}
public void OnMessageReceived(object sender, MessageEventArgs e)
{
//Message sender client
Client temp = (Client)sender;
AddLog(temp.UserName+" :"+e.Message);
Client tempClient;
//Send the message to each client
foreach(DictionaryEntry d in clientTable)
{
tempClient =(Client)d.Value;
tempClient.Send(temp.UserName+" :"+e.Message);
}
}
//Method to add the string to the server log
public void AddLog(string msg)
{
logBox.Items.Add(msg);
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
if(serverListener!=null)
serverListener.Stop();
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.logBox = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// logBox
//
this.logBox.Dock = System.Windows.Forms.DockStyle.Fill;
this.logBox.Name = "logBox";
this.logBox.Size = new System.Drawing.Size(368, 368);
this.logBox.TabIndex = 0;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(368, 373);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.logBox});
this.Name = "Form1";
this.Text = "Socket Server";
this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
this.ResumeLayout(false);
}
#endregion
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
serverListener.Stop();
}
}
}
