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Roadmap for v3

See original GitHub issue

This list is open to suggestions!

Improve the documentation

That is obviously the major pain point of the project.

Reverse the direction of the ping-pong mechanism

Currently the client emits a ping and waits for a pong from the server, relying on setTimeout() to check whether the connection is still alive or not. But there are reports of throttled timers on the browser side, which may trigger random disconnections.

A solution would be that the ping is emitted from the server to the client, but that is a breaking change which will also break other client implementations…

Update the source code to ES6 in every project
Migrate to webpack 4 (or another bundler, if need be)
Remove the sticky-session requirement when using multiple nodes
Default to websocket, and use XHR polling as fallback

Currently polling is established first, and then upgraded to websocket if possible.

Make the generateId method asynchronous

This one is also a breaking change. Related: https://github.com/socketio/engine.io/pull/535

Update the Typescript bindings, if need be
Triage issues

No release date for now, as I’m not sure how much time I will be able to dedicate to those points in the following weeks. But any help is welcome!

Issue Analytics

State:
Created 5 years ago
Reactions:11
Comments:51 (22 by maintainers)

Top GitHub Comments

9reactions

darrachequesnecommented, Sep 17, 2020

We’ve already released Engine.IO v4, which will be included in Socket.IO v3. You can find the release notes here.

I’ve added what I could find in this thread to the project here, to give an overview of the progress. Do not hesitate to comment!

8reactions

darrachequesnecommented, Oct 13, 2020

socket.io@3.0.0-rc1 and socket.io-client@3.0.0-rc1 have been published 🔥

A few notes:

the public API does not change much (a few methods have been removed though, see here and here for reference)
the codebase has been migrated to TypeScript, but some typings are missing, notably on the client-side.
the breaking changes in Engine.IO v4 (listed here) have been included
the client bundle size has increased a bit, despite having less dependencies, I’ll dig into this

Any feedback is welcome!