ResultAlive indicates that the connection remains alive (connected).

ResultClosedByPeer indicates that the connection was gracefully closed, and the inbound stream was closed first.

ResultClosedBySelf indicates that the connection was gracefully closed, and the outbound stream was closed first.

ResultConnecting indicates that the connection remains in a connecting state.

ResultDrop indicates that the segment should be dropped.

ResultReset indicates that the connection was reset.

TCB is a TCP Control Block.

Result is returned when the state of a TCB is updated in response to an inbound or outbound segment.