After a service restart ttyd dies. The reconnect loop was retrying the
WebSocket every 2s but never calling POST /api/sessions/{name}/connect
to respawn ttyd. The proxy had nothing to connect to so it looped forever
showing 'Reconnecting...'.
Fix:
- Add _reconnectAttempts counter at module level
- Close handler now uses exponential backoff: 1s, 2s, 4s, 8s, cap 15s + jitter
- After 2 failed WS attempts, fire-and-forget POST to /api/sessions/{name}/connect
to respawn ttyd before the next WebSocket retry
- Reset _reconnectAttempts to 0 on successful open, openTerminal, closeTerminal
Root cause: open event fires and reconnect loop retried the WS address but
ttyd was dead so the proxy rejected it — POST /connect was only called from
openSession() on page load/restore, never during reconnect.
Brian Krabach
a40b95efe6