The BlueBubbles adapter registers its webhook with three events:
["new-message", "updated-message", "message"]. The third, "message",
is not a valid event type in the BlueBubbles server API — BB rejects
the registration payload with HTTP 400 Bad Request.
Currently this is masked by the "crash resilience" check in
_register_webhook, which reuses any existing registration matching the
webhook URL and short-circuits before reaching the API call. So an
already-registered webhook from a prior run keeps working. But any fresh
install, or any restart after _unregister_webhook has run during a clean
shutdown, fails to re-register and silently stops receiving messages.
Observed in production: after a gateway restart in v0.9.0 (which auto-
unregisters on shutdown), the next startup hit this 400 and the bot went
silent until the invalid event was removed.
BlueBubbles documents "new-message" and "updated-message" as the message
event types (see https://docs.bluebubbles.app/). There is no "message"
event, and no harm in dropping it — the two remaining events cover all
inbound message webhooks.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Follow-up to cherry-picked PR #6592:
- Extract _webhook_url property to deduplicate URL construction
- Add _find_registered_webhooks() helper for reuse
- Crash resilience: check for existing registration before POSTing
(handles restart after unclean shutdown without creating duplicates)
- Accept 200-299 status range (not just 200) for webhook creation
- Unregister removes ALL matching registrations (cleans up orphaned dupes)
- Add 17 tests covering register/unregister/find/edge cases
**Problem:**
The BlueBubbles iMessage gateway was not receiving incoming messages even though:
1. BlueBubbles Server was properly configured and running
2. Hermes gateway started without errors
3. Webhook listener was started on the configured port
The root cause was that the BlueBubbles adapter only started a local webhook
listener but never registered the webhook URL with the BlueBubbles server via
the API. Without registration, the server doesn't know where to send events.
**Fix:**
1. Added _register_webhook() method that POSTs to /api/v1/webhook with the
listener URL and event types (new-message, updated-message, message)
2. Added _unregister_webhook() method for clean shutdown
3. Both methods handle the case where webhook listens on 0.0.0.0/127.0.0.1
by using 'localhost' as the external hostname
4. Fixed documentation: 'hermes gateway logs' → 'hermes logs gateway'
**API Reference:**
https://docs.bluebubbles.app/server/developer-guides/rest-api-and-webhooks
**Testing:**
- Webhook registration is now automatic when gateway starts
- Failed registration logs a warning but doesn't prevent startup
- Clean shutdown unregisters the webhook
Closes: iMessage gateway not working issue
