Closing a connection

Two applications terminate their connection by using a close operation.

  1. The station initiating the close sets the finish (FIN) bit and transmits.

  2. The receiver informs the application that the connection is closing and acknowledges.

  3. These connections are duplex and must be closed both ways. The receiver now sends its FIN packet.

  4. The sender node acknowledges the FIN, this connection is now closed.

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