multiclient

[homer.favenir]

hi,
i have a chat app and it runs.
but i notice that i made a single client only to send message to the host
how can i make my chat a multiclient receiver.
is it the host or the client that i have to change.

please advice
thanks

[cilu]

Depends, possibly both. How should we know what you have to change when we don't know anything about your application?

Well, I suppose you want your chat application to allow clients to talk to all users or to a particular user. Your server should be capable of accepting connections from multiple clients. The clients should be notified when someone logs in or out and display a list of available chat users. The server should be able to redirect the received messages to all users or only to one (or a group).

But first thing is that you define what you want for your application, and then you can focus on how to do it.

[homer.favenir]

my script is very simple,

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;

namespace printerManager.V._1._0
{
    public partial class SocketServerForm : Form
    {
        public AsyncCallback pfnWorkerCallBack;
        public Socket m_socListener;
        public Socket m_socWorker;

        public SocketServerForm()
        {
            InitializeComponent();
        }

        
        private void cmdListen_Click_1(object sender, EventArgs e)
        {
            try
            {
                //create the listening socket...
                m_socListener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                IPEndPoint ipLocal = new IPEndPoint(IPAddress.Any, 8221);
                //bind to local IP Address...
                m_socListener.Bind(ipLocal);
                //start listening...
                m_socListener.Listen(4);
                // create the call back for any client connections...
                m_socListener.BeginAccept(new AsyncCallback(OnClientConnect), null);
                cmdListen.Enabled = false;

            }
            catch (SocketException se)
            {
                MessageBox.Show(se.Message);
            }
        }
        public void OnClientConnect(IAsyncResult asyn)
        {
            try
            {
                m_socWorker = m_socListener.EndAccept(asyn);

                WaitForData(m_socWorker);
            }
            catch (ObjectDisposedException)
            {
                System.Diagnostics.Debugger.Log(0, "1", "\n OnClientConnection: Socket has been closed\n");
            }
            catch (SocketException se)
            {
                MessageBox.Show(se.Message);
            }

        }
        public class CSocketPacket
        {
            public System.Net.Sockets.Socket thisSocket;
            public byte[] dataBuffer = new byte[1];
        }
        public void WaitForData(System.Net.Sockets.Socket soc)
        {
            try
            {
                if (pfnWorkerCallBack == null)
                {
                    pfnWorkerCallBack = new AsyncCallback(OnDataReceived);
                }
                CSocketPacket theSocPkt = new CSocketPacket();
                theSocPkt.thisSocket = soc;
                // now start to listen for any data...
                soc.BeginReceive(theSocPkt.dataBuffer, 0, theSocPkt.dataBuffer.Length, SocketFlags.None, pfnWorkerCallBack, theSocPkt);
            }
            catch (SocketException se)
            {
                MessageBox.Show(se.Message);
            }

        }
        delegate void FixCallBack(IAsyncResult asyn);
        public void OnDataReceived(IAsyncResult asyn)
        {
            try
            {
                if (this.InvokeRequired)
                {
                    FixCallBack dd = new FixCallBack(OnDataReceived);
                    this.Invoke(dd, new object[] { asyn });
                }
                else
                {
                    CSocketPacket theSockId = (CSocketPacket)asyn.AsyncState;
                    //end receive...
                    int iRx = 0;
                    string mess;
                    iRx = theSockId.thisSocket.EndReceive(asyn);
                    char[] chars = new char[iRx + 1];
                    System.Text.Decoder d = System.Text.Encoding.UTF8.GetDecoder();
                    int charLen = d.GetChars(theSockId.dataBuffer, 0, iRx, chars, 0);
                    System.String szData = new System.String(chars);

                    mess = txtDataRx.Text + szData;

                    txtDataRx.Text = mess;
                    WaitForData(m_socWorker);
                }
            }
            catch (ObjectDisposedException)
            {
                System.Diagnostics.Debugger.Log(0, "1", "\nOnDataReceived: Socket has been closed\n");
            }
            catch (SocketException se)
            {
                MessageBox.Show(se.Message);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                Object objData = txtDataTx.Text;
                byte[] byData = System.Text.Encoding.ASCII.GetBytes(objData.ToString());
                m_socWorker.Send(byData);
            }
            catch (SocketException se)
            {
                MessageBox.Show(se.Message);
            }
        }

        private void txtDataRx_TextChanged(object sender, EventArgs e)
        {

        }

        
    }
}

its the server script

what part of the script should i change?

tia

[cilu]

You're not paying attention. How can we figure what parts of the scripts should be modified when you didn't explain how you expect your application to work?

[homer.favenir]

i would like the server accepts multiclient, as of now it is accepting single client only...

thanks

[nelo]

my script is very simple,

its the server script

what part of the script should i change?

tia

It would be better if you edit that post and use the [code] tag instead of [quote].

[homer.favenir]

hi,
i already changed it

tia