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Secure access
1. Send a
Secure Session Control frame - 0x2E
The client's 64-bit address.
n
The options field set to 0x02 for server side session termination.
n
Set the timeout to 0x0000.
n
2. Wait for the
successful.
The client will emit a modem status 0x3C (Session Ended).
n
The server will also emit a modem status (or an extended modem status depending on
n
AZ) of 0x3C (Session Ended).
Note
The 64-bit address can be set to the broadcast address to end all incoming sessions.
Note
This functionality can be used to end orphaned client-side sessions—in case the server
unexpectedly reset for some reason.
Secure Session API frames
Secure Session can only be established from a node that is operating in API mode (MicroPython
support is forthcoming). The server-side can be in Transparent mode, but the client must be in API
mode. Once a session has been established between a client and server node, the client can be
transitioned to Transparent mode; and if bit 4 of TO is set, the client will encrypt data sent in
Transparent mode for the duration of session.
There are four frames that are used for controlling and observing a secure session.
Secure Session Control frame -
n
or out of a server. Any attempt to use the Control frame will generate a response frame.
Secure Session Response frame -
n
0x2E frame indicating whether it was successful or not.
Modem Status frame -
n
succeeds, fails, or was terminated. The client will also emit modem statuses if the session
times out.
Extended Modem Status frame -
n
replaced with extended modem statuses. These frames will contain the status that caused
them to be emitted as well as the address of the node that initiated the session, the session
options, and the timeout value.
Frame exchanges:
Digi XBee® 3 802.15.4 RF Module User Guide
Secure Session Response frame - 0xAE
0x2E: This frame is passed to the client that wishes to log into
0xAE: This frame returns the status of the previously sent
0x8A: The server will also emit a modem status whenever an attempt
0x98: If bit 3 of AZ is set then modem statuses will be
Secure Session API frames
to the server node with:
to determine if the termination was
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