host.plugin_data now always holds rtt_ipv4/rtt_ipv6 history after the
first heartbeat, which broke two pre-existing behaviors that assumed
plugin_data reflects only real client-collected data:
- The request_update ACK gate in handle_datagram() never fired again
after a host's first heartbeat, so stale OS/agent-version info was
never refreshed after a reconnect (only a client restart fixed it).
- plugin_data.clear() on every UP transition wiped rtt_* history too,
so a flaky host could never accumulate a useful RTT graph.
Add _is_rtt_key()/_has_real_plugin_data() helpers so both spots treat
rtt_* keys as synthetic: the gate now looks only at real plugin data,
and the recovery clear only drops real plugin keys, preserving RTT
history across reconnects.
Also fixes two pre-existing E127 continuation-indent flake8 issues in
tests/test_udp_rtt_history.py.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DEimzMv4Q5EjFg3hoiZ69T
andreasandClaude Sonnet 5
cdb2183989