ZServer Reloaded with HTTP/2 and WebSocket Support
0 likes84 views
The document discusses the reloading of the zserver with support for HTTP/2 and WebSocket protocols as presented by Asko Soukka at the Plone Conference 2019. It covers features such as Twisted-based HTTP server, pub/sub messaging, and integration with asyncio, as well as the current status of the zserver project on GitHub, including code updates and testing challenges. Future steps and considerations for upstream dependencies in Zope 4 and 5 are also noted.
![datakurre
Guarded Events
Server publishes guarded event
{
"guards": [{
"allowedRolesAndUsers": {
"method": "/Plone/@@wsevents-guard",
"tokens": ["Editor"]
}
}],
"payload": {}
}
4](https://image.slidesharecdn.com/zserver-reloaded-with-http2-and-websocket-support-191110080138/85/ZServer-Reloaded-with-HTTP-2-and-WebSocket-Support-7-320.jpg)
![datakurre
Guard Response
Server responses to guard check once for each subscriber
{
"allowedRolesAndUsers": {
"tokens": ["Reviewer", "Editor"],
"expires": 1571723078
}
}
5](https://image.slidesharecdn.com/zserver-reloaded-with-http2-and-websocket-support-191110080138/85/ZServer-Reloaded-with-HTTP-2-and-WebSocket-Support-8-320.jpg)
![State of Friends
Complete experience
[sources]
ZServer = git git@github.com:datakurre/ZServer branch=datakurre/master
plone.recipe.zope2instance = git git@github.com:plone/plone.recipe.zope2instance
branch=datakurre/zserver
collective.wsevents = git git@github.com:datakurre/collective.wsevents
# Optional pip-installable control scripts:
plonectl = git git@github.com:datakurre/plonectl
# Optional collective.taskqueue upgrade branch:
collective.taskqueue = git git@github.com:collective/collective.taskqueue
branch=python3_compatibility
7](https://image.slidesharecdn.com/zserver-reloaded-with-http2-and-websocket-support-191110080138/85/ZServer-Reloaded-with-HTTP-2-and-WebSocket-Support-10-320.jpg)
ZServer Reloaded with HTTP/2 and WebSocket Support
- 1. ZServer Reloaded with HTTP/2 and WebSocket Support Plone Conference 2019 Asko Soukka 25.10.2019
- 2. Demo
- 3. Status
- 4. datakurre Drop-in Replacement HTTP and WebDAV • Twisted HTTP Server • Twisted thread pool w/ async FileSender • AsyncIO/uvloop loop when available • ZConfig configuration and logging • WSGI ZPublisher request handler HTTP/2 • Twisted + OpenSSL + H2 1
- 5. datakurre WebSockets WebSockets with PubSub-messaging • Autobahn Twisted WebSocket protocol • ZMQ PubSub-socket using IPC-socket • Connection upgradeable at all paths • Connection autosubscribes to local events 2
- 6. datakurre Publish-Subscribe Client subscribes to events {"method": "SUBSCRIBE": "path": "/"} Client unsubscribes events {"method": "UNSUBSCRIBE": "path": "/"} 3
- 7. datakurre Guarded Events Server publishes guarded event { "guards": [{ "allowedRolesAndUsers": { "method": "/Plone/@@wsevents-guard", "tokens": ["Editor"] } }], "payload": {} } 4
- 8. datakurre Guard Response Server responses to guard check once for each subscriber { "allowedRolesAndUsers": { "tokens": ["Reviewer", "Editor"], "expires": 1571723078 } } 5
- 9. datakurre State of Things github.com/datakurre/ZServer • Rebased on top of the latest ZServer release • Python 3 syntax update + new code • Used in GSOC 2019 for gatsby-source-plone • WebDAV tested manually at PLOG 2019 • Dead code not removed yet and tests are failing... 6
- 10. State of Friends Complete experience [sources] ZServer = git git@github.com:datakurre/ZServer branch=datakurre/master plone.recipe.zope2instance = git git@github.com:plone/plone.recipe.zope2instance branch=datakurre/zserver collective.wsevents = git git@github.com:datakurre/collective.wsevents # Optional pip-installable control scripts: plonectl = git git@github.com:datakurre/plonectl # Optional collective.taskqueue upgrade branch: collective.taskqueue = git git@github.com:collective/collective.taskqueue branch=python3_compatibility 7
- 11. Next
- 12. datakurre State of Upstream Zope 4 • WebDAV made dependent on ZServer (by mistake?) Zope 5 • Assumes ZServer (and WebDAV?) to no longer exist 8
- 13. datakurre Discussion Remaining steps • Upstream or not? • Eliminate dead code • QA (tests, documentation, ...) • Release • Restore wsgi=off on Python 3 9