TCP Connection Tear-Down

• Need to tear down both directions of the TCP connection. Uses modified 3-way handshake:

  • A ---- Seq k, ACK j+1, FIN+ACK ------> B
  • A <--- Seq j, ACK k+1, ACK <-- B
  • ... sometime later ...
  • A <--- Seq j, ACK k+1, FIN+ACK <-- B
  • A ----> Seq k, ACK j+1, ACK ----> B

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