TCP half-open

A TCP connection is referred to as half-open when the station at one end of that TCP connection has crashed, or has otherwise removed the socket without formally notifying the other end of the TCP connection.

Note: A common misconception throughout the Internet is that the term TCP half-open applies to a partially-completed TCP handshake state. A better term for this unsynchronized kind of socket state is an embryonic state.

See also

• Transmission Control Protocol
• Embryonic connection

External links

• Transmission Control Protocol DARPA Internet Program Protocol Specification