public TcpListener(IPEndPoint localEP) { if (NetEventSource.IsEnabled) NetEventSource.Enter(this, localEP); if (localEP == null) { throw new ArgumentNullException(nameof(localEP)); } _serverSocketEP = localEP; _serverSocket = new Socket(_serverSocketEP.AddressFamily, SocketType.Stream, ProtocolType.Tcp); if (NetEventSource.IsEnabled) NetEventSource.Exit(this); }