' Check if Server Port is available Dim isPortAvailable As Boolean = True Dim ipGlobalProp As IPGlobalProperties = IPGlobalProperties.GetIPGlobalProperties() Dim ipEndPt() As IPEndPoint = ipGlobalProp.GetActiveTcpListeners For Each tcpListeners As IPEndPoint In ipEndPt If tcpListeners.Port = ServerPort Then isPortAvailable = False Exit For End If Next If isPortAvailable = False Then ' Connection already open on Server Port InvokeUpdateServerStatus("[ERROR] Connection Already Open on TCP Port: " & ServerPort) Else ' Enable Start Server Button InvokeButtonStartServer(True) InvokeUpdateServerStatus("[INFO] Server Ready to Start...") End If