Make WebSocket reconnect and SSH fallback transitions reliable across asynchronous disconnects, stale callbacks, and overlapping connections. Keep the SSH listener available while disconnected and allow a verified WebSocket connection to take precedence when it recovers.
Co-authored-by: henrygd <hank@henrygd.me>
The agent resets its WebSocket deadline to 70s, but the hub's default
collection interval is 60s, so a single slow collection cycle is enough to
trip the deadline and start a reconnect loop even though the hub is still
serving the agent. Raise the deadline to 120s and add a regression test that
keeps the slow-collection window from being lowered below two minutes.
Verified with go test -tags=testing ./agent (focused tests and the full agent
suite minus the container-only TestDirectoryIsWritable case), go vet, the
agent build and gofmt.
Closes#2294
- add one minute charts
- update disk io to use bytes
- update hub and agent connection interfaces / handlers to be more
flexible
- change agent cache to use cache time instead of session id
- refactor collection of metrics which require deltas to track
separately per cache time
