| UID | title | description | helpviewer_keywords | old-location | tech.root | ms.assetid | ms.date | ms.keywords | req.header | req.include-header | req.target-type | req.target-min-winverclnt | req.target-min-winversvr | req.kmdf-ver | req.umdf-ver | req.ddi-compliance | req.unicode-ansi | req.idl | req.max-support | req.namespace | req.assembly | req.type-library | req.lib | req.dll | req.irql | targetos | req.typenames | req.redist | ms.custom | f1_keywords | dev_langs | topic_type | api_type | api_location | api_name | ||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NE:mstcpip._TCPSTATE |
TCPSTATE (mstcpip.h) |
Indicates the possible states of a Transmission Control Protocol (TCP) connection. |
|
winsock\tcpstate.htm |
WinSock |
225C423E-C820-4E9F-8261-DA1E14F81683 |
12/05/2018 |
TCPSTATE, TCPSTATE enumeration [Winsock], TCPSTATE_CLOSED, TCPSTATE_CLOSE_WAIT, TCPSTATE_CLOSING, TCPSTATE_ESTABLISHED, TCPSTATE_FIN_WAIT_1, TCPSTATE_FIN_WAIT_2, TCPSTATE_LAST_ACK, TCPSTATE_LISTEN, TCPSTATE_MAX, TCPSTATE_SYN_RCVD, TCPSTATE_SYN_SENT, TCPSTATE_TIME_WAIT, mstcpip/TCPSTATE, mstcpip/TCPSTATE_CLOSED, mstcpip/TCPSTATE_CLOSE_WAIT, mstcpip/TCPSTATE_CLOSING, mstcpip/TCPSTATE_ESTABLISHED, mstcpip/TCPSTATE_FIN_WAIT_1, mstcpip/TCPSTATE_FIN_WAIT_2, mstcpip/TCPSTATE_LAST_ACK, mstcpip/TCPSTATE_LISTEN, mstcpip/TCPSTATE_MAX, mstcpip/TCPSTATE_SYN_RCVD, mstcpip/TCPSTATE_SYN_SENT, mstcpip/TCPSTATE_TIME_WAIT, winsock.tcpstate |
mstcpip.h |
Windows |
Windows 10, version 1703 [desktop apps only] |
Windows Server 2016 [desktop apps only] |
Windows |
TCPSTATE |
19H1 |
|
|
|
|
|
|
The Windows Sockets TCPSTATE enumeration indicates the possible states of a Transmission Control Protocol (TCP) connection.
The TCP connection has no connection state at all. This state represents the state when there is no Transmission Control Block (TCB), and therefore, no connection.
The TCP connection is waiting for a connection request from any remote TCP and port.
-The TCP connection is waiting for a matching connection request after sending a connection request.
The TCP connection is waiting for an acknowledgment that confirms the connection request after both receiving and sending a connection request.
The TCP connection is an open connection, so the data received can be delivered to the user. This state is normal state for the data transfer phase of the connection.
The TCP connection is waiting for a request to end the connection from the remote TCP, or an acknowledgment of the previously sent request to end the connection.
The TCP connection is waiting for a request to end the connection from the remote TCP.
The TCP connection is waiting for a request to end the connection from the local user.
The TCP connection is waiting for an acknowledgment of the request to end the connection from the remote TCP.
The TCP connection is waiting for an acknowledgment of the request to end the connection that was previously sent to the remote TCP, which includes an acknowledgment of its request to end the connection.
The TCP connection is waiting for enough time to pass to be sure the remote TCP received the acknowledgment of its request to end the connection.
The maximum value of the TCPSTATE enumeration.
A TCP connection progresses from one state to another in response to events. The events are the user calls OPEN, SEND, RECEIVE, CLOSE, ABORT, and STATUS; the incoming segments, particularly those containing the SYN, ACK, RST and FIN flags; and timeouts.
For more information about TCP connection states, see RFC 793.