WebSub sequence diagram
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A sequence diagram for WebSub.
WebSub is the new W3C name for PubSubHubbub. It is a web based protocol for pubsub.
Sequence diagram
Phases:
- discovery, the subscriber discovers the URL of a hub where it can subscribe to notifications (about a topic)
- subscription, the subscribe subscribes to notifications (about a topic)
- notification, the publisher notifies the hub when the topic is updated
- content distribution, the hub delivers the update to the subscribers
- unsubscription, the subscriber may unsubscribe
References
Specifications:
- W3C WebSub recommendation
- PubSubHubbub Core 0.3 specification
- PubSubHubbub Core 0.4 specification
- FHIRcast
- Webhooks Meta ~ Get Started
Hubs:
Misc: