detectc client disconnect

[trogen1010]

helo guys
i wrote a program (vb.net2005) for client- server communications using tcp/ip ,all are workin pretty well except one thing . when ever one new client is conected to server i ll display client ip and machine name on a grid. but i wont able to detect when a client is disconnected from a server

please provide some sample code for this

thx

[Campion]

You need to test whether the socket is still connected, then cleanup from there.

Do you know how to make custom events?

[trogen1010]

no campion,
i dont no how to make custom events can u help me out
pls and also pls specify some sample codes

tahnx

[Campion]

I need a little more information, as well. Are you using an object to encapsulate the connections, or are they just being handled by a form?

Is each connection handled inside of its own class?

[trogen1010]

yep it is just handled by a form . i had one client module and server module
to handle connections

[Campion]

This is how I handle disconnections. There's an event in there that fires off when it is sensed that the socket is no longer connected. However, since you have everything self-contained onto a form, what you need to do instead is ensure that your sockets are closed and that any references to the client no longer exists anywhere else in your project.

Try
            BytesRead = _TcpServer.GetStream.EndRead(Ar)

            _ServerMsgBuild = Encoding.GetEncoding(1252).GetString(_ServerBuffer, 0, BytesRead)


            While _TcpServer.GetStream.DataAvailable
                _ServerMsgBuild +=  Encoding.GetEncoding(1252).GetString(_ServerBuffer, 0,  _
                     _TcpServer.GetStream.Read(_ServerBuffer, 0, _ServerBuffer.Length))
            End While
        Catch ex As Exception
            RaiseEvent Disconnected()
            Return
        End Try