Specifies the states of a Transmission Control Protocol (TCP) connection.
Syntax
Remarks
This enumeration defines valid values for the TcpConnectionInformation.State property. TCP is a transport layer protocol responsible for reliably sending and receiving data packets. The TCP states in this enumeration are defined in IETF RFC 793 available at tp://www.ietf.org/.
Members
| Member Name | Description |
|---|---|
| Closed |
The TCP connection is closed. |
| CloseWait |
The local endpoint of the TCP connection is waiting for a connection termination request from the local user. |
| Closing |
The local endpoint of the TCP connection is waiting for an acknowledgement of the connection termination request sent previously. |
| DeleteTcb |
The transmission control buffer (TCB) for the TCP connection is being deleted. |
| Established |
The TCP handshake is complete. The connection has been established and data can be sent. |
| FinWait1 |
The local endpoint of the TCP connection is waiting for a connection termination request from the remote endpoint or for an acknowledgement of the connection termination request sent previously. |
| FinWait2 |
The local endpoint of the TCP connection is waiting for a connection termination request from the remote endpoint. |
| LastAck |
The local endpoint of the TCP connection is waiting for the final acknowledgement of the connection termination request sent previously. |
| Listen |
The local endpoint of the TCP connection is listening for a connection request from any remote endpoint. |
| SynReceived |
The local endpoint of the TCP connection has sent and received a connection request and is waiting for an acknowledgment. |
| SynSent |
The local endpoint of the TCP connection has sent the remote endpoint a segment header with the synchronize (SYN) control bit set and is waiting for a matching connection request. |
| TimeWait |
The local endpoint of the TCP connection is waiting for enough time to pass to ensure that the remote endpoint received the acknowledgement of its connection termination request. |
| Unknown |
The TCP connection state is unknown. |
Requirements
Assembly: System (in System.dll)
Assembly Versions: 2.0.0.0, 4.0.0.0
Since: .NET 2.0