XMPP and Application Messaging
summary
Uses XMPP to identify targets, push command sequences asynchronously, and stream command output reliably across network outages and reboots. Implements three stanzas: message for queued guaranteed delivery (used for output and resumable commands), presence caches location and broadcast metadata (roster, online/offline state), and IQ for request/response nonqueued actions (e.g. deliberate reboots). Uses ejabberd as server and xmpp4r (migrated from xmpp-simple); ejabberd proves very reliable though offline detection can lag up to an hour.
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chapters (5)
- 0:00Start
- 1:32XMPP Stanzas and When to Use
- 4:09XMPP4r: Hello world
- 6:43Tips and Tricks
- 7:01Things we could do better
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