/// <summary>
/// Accept the new client then invoke the call back
/// </summary>
/// <param name="ar"></param>
private static void AcceptNewClient(IAsyncResult ar)
{
ConnectionState cs = (ConnectionState)ar.AsyncState;
Socket socket = cs.listener.EndAcceptSocket(ar);
SocketState ss = new SocketState(socket, clientID++);
ss.theSocket = socket;
ss.CallMe = cs.CallMe;
ss.CallMe(ss);
cs.listener.BeginAcceptSocket(AcceptNewClient, cs);
}
// Ends the attempt to connect to server and fires the callback then begins to receive message
private static void ConnectedToServer(IAsyncResult ar)
{
SocketState state = (SocketState)ar.AsyncState;
try
{
state.theSocket.EndConnect(ar);
state.CallMe(state);
state.theSocket.BeginReceive(state.messageBuffer, 0, state.messageBuffer.Length, SocketFlags.None, RecieveCallback, state);
}
catch
{
System.Windows.Forms.MessageBox.Show("Unable to connect to Server");
}
}
// receives a message so end receive, add to stringbuilder then fire the callback
private static void RecieveCallback(IAsyncResult ar)
{
SocketState state = (SocketState)ar.AsyncState;
try
{
int bytesRead = state.theSocket.EndReceive(ar);
if (bytesRead == 0)
{
state.sb.Clear();
}
else
{
state.sb.Append(Encoding.UTF8.GetString(state.messageBuffer, 0, bytesRead));
}
state.CallMe(state);
}
catch { }
}