namespace System.Net.NetworkInformation { public enum TcpState { Closed = 1, CloseWait = 8, Closing = 9, DeleteTcb = 12, Established = 5, FinWait1 = 6, FinWait2 = 7, LastAck = 10, Listen = 2, SynReceived = 4, SynSent = 3, TimeWait = 11, Unknown = 0 } }