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Keep Alive Packet

Only TYPE Field

📦 Size​

1 byte

  • TYPE: 8 bits (0x05)

🔁 Sent By​

Both client and server, periodically during an active session.

🧪 Contents​

  • Contains only a single byte: the TYPE field
  • It is not encrypted

🔄 Purpose​

This packet is used to prevent idle disconnections.

If no packets (including keep-alives) are received within the inactivity timeout, the session will automatically close.

Used in both directions to confirm that the other side is still alive.