[Kea-users] unexpected first character^U: expected 'H'

[Francis Dupont]

duluxoz writes:

> WARN  [kea-dhcp4.ha-hooks/3603655.140462806251648] 
> HA_HEARTBEAT_COMMUNICATIONS_FAILED failed to send heartbeat to node2 
> (http://192.168.0.6:8000/): unexpected first character^U: expected 'H' : 
> current state: [ 112 RECEIVE_START_ST ] next event: [ 1 START_EVT ]

=> the response is parsed by an automaton which in its first/start state
RECEIVE_START_ST looks for the first character: it expects 'H' (in fact
HTTP/X.Y where X.Y is the HTTP version, e.g. HTTP/1.1) and it found
^U (0x15)) so garbage. I recommend to dump the TCP communication to
understand what happens... lsof can also be useful to understand what
process is listening at port 8000 on 192.168.0.6.

Regards

Francis Dupont <fdupont at isc.org>

PS: I leave my colleagues to comment the configuration you provided.