Question: new uWebsocket.js

Is it possible without big changes to use new maintained uWebsocket.js (link below) for polling & websocket transports? I'd like to learn from engine.io code and start coding support for it.

Or should I start from null and create new lib.

https://github.com/uNetworking/uWebSockets.js

uWebsocket.js has support for websocket & http handling as well and is much faster and lighter than ws and I guess has same speed as uws (same author) or even faster because of live maintaining

[shirtleton]

Thanks for bringing this up again @Kamil93.
This has been a topic of debate for a few months now with little to no movement on the issue.

#560

I guess if we don't want a lot of changes in eio, it's necessary to create wrappers:

• class that emulate ws.Server class
• wrapper for request object, because req from uws.js has short lifetime (only while executing callbacks) and eio stores sometimes request for later. Differences in methods&getters names are also the reasons.

An HttpRequest is stack allocated and only accessible during the callback invocation.
https://unetworking.github.io/uWebSockets.js/generated/interfaces/httprequest.html

[darrachequesne]

You can also take a look at eiows, which is a fork of the uws package.

Instructions here: https://socket.io/docs/server-installation/#Other-WebSocket-server-implementations

[darrachequesne]

Update: I'm working on this, binding to a uWebsocket.js server sounds really promising in terms of performance.

[md-seb]

Update: I'm working on this, binding to a uWebsocket.js server sounds really promising in terms of performance.

@darrachequesne any success?

I noticed that there are no prebuilt binaries for node 16:

Error: This version: darwin_x64_93 of µWS is not compatible with your Node.js build:Error: Cannot find module 'uws.js/uws_darwin_x64_93.node

uWebsocket.js depends on uws.js, which contains the actual binaries, which have to be compatible with installed node ABI version (process.versions.modules) which is version 93 for node 16.

[md-seb]

npm i uwebsockets.js installs an older version
this worked: npm i uWebSockets.js@uNetworking/uWebSockets.js#v20.1.0

[kapouer]

@darrachequesne you will probably appreciate the work of https://github.com/kartikk221/hyper-express

[darrachequesne]

Added in engine.io@6.1.0:

const { App } = require("uWebSockets.js");
const { uServer } = require("engine.io");

const app = new App();
const server = new uServer();

server.attach(app);

app.listen(3000, () => {});

I plan to merge the changes in Socket.IO, so we can benefit from the publish functionality.

Feedback is welcome!