Network stream error "Unable to read data from the transport connection."

[Galore]

Hello,

I'm trying to make a simple socket application, something like a chat
application, but when I run it, it shows the following error when the client
connects to the server: "Unable to read data from the transport
connection.". I'm posting the code, so if somebody can help I'll be very
grateful.

private void DoListen()
{
try
{
Server.Start();
Client = Server.AcceptTc pClient();
state = SocketState.Con nected;
stream = Client.GetStrea m();
stream.BeginRea d(dataBytes,0,d ataBytes.Length , new
AsyncCallback(R eadStream),null );
}
catch
{
state = SocketState.Clo sed;
}
}

private void ReadStream (IAsyncResult args)
{
if (state == SocketState.Con nected)
{
int I;
I = stream.EndRead( args); // The error happens here!!!
if (I > 0)
{
data = Encoding.ASCII. GetString(dataB ytes);
stream.BeginRea d(dataBytes,0,d ataBytes.Length , new
AsyncCallback(R eadStream),null );
}
}
}

Thanks