Cannot perform %TypedArray%.prototype.set on a detached ArrayBuffer when using with Socket.io #705

tahayk · 2022-02-16T21:36:57Z

Hey
I'm trying to use uWebSockets with Socket.io,
but I keep getting this error, and I noticed that it only happens when I use Safari:

node:buffer:254
  TypedArrayPrototypeSet(target, source, targetStart);
  ^

TypeError: Cannot perform %TypedArray%.prototype.set on a detached ArrayBuffer
    at Buffer.set (<anonymous>)
    at _copyActual (node:buffer:254:3)
    at Function.concat (node:buffer:562:12)
    at onEnd (/Users/.../node_modules/engine.io/build/transports-uws/polling.js:126:32)
    at /Users/tahayk/.../node_modules/engine.io/build/transports-uws/polling.js:143:17

Node.js v17.0.1

Here is the example I used:

server.js:

const { App } = require("uWebSockets.js");
const { Server } = require("socket.io");

const app = new App();
const io = new Server({ cors: {
        origin: "*",
        methods: ["GET", "POST", "PUT"]
    }});

io.attachApp(app);

io.on("connection", (socket) => {
    // ...
});

app.listen(9000, (token) => {
    if (!token) {
        console.warn("port already in use");
    }
});

demo.html

<!doctype html>
<html>
<head>
    <title>Socket.IO uWS</title>
</head>
<script src="node_modules/socket.io/client-dist/socket.io.js"></script>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script>
    $(function () {
        var socket = io(
            'ws://127.0.0.1:9000',
            {
                // transports: ["websocket"] // ----> it works if you add this
            });

        socket.onAny((eventName, ...args) => {
            console.log("received event: " + eventName);
        });
    });
</script>
<body>
</body>
</html>

Any idea about this issue ?
Thanks.

The text was updated successfully, but these errors were encountered:

e3dio · 2022-02-16T23:39:13Z

You can see the error is in engine.io/build/transports-uws/polling.js so you need to open issue in engine.io library

e3dio · 2022-02-17T02:12:16Z

@tahayk They are doing this wrong on this line https://github.com/socketio/engine.io/blob/a463d268ed90064e7863679bda423951de108c36/lib/transports-uws/polling.ts#L158 They are trying to concat Buffer views of arrayBuffers that are already gone, need to make copy

e3dio · 2022-02-17T02:29:35Z

Buffer.from(arrayBuffer).copy(allocatedBuffer, offset)

ghost · 2022-02-17T04:32:58Z

That's kind of interesting that they've actually built polling on uws http and are using the pub sub features. That means we've won, they have adopted our features and our API.

Compare this with 2016 when we adopted their interfaces and acted like a drop in module for their shitty API. That's a milestone since the NPM shitfest days.

e3dio · 2022-02-18T17:26:56Z

I added PR to fix Socket.io issue here socketio/engine.io#642 as described here socketio/socket.io#4281 (comment)

e3dio · 2022-02-23T10:28:14Z

@tahayk they just merged PR and released new version, that should be fixed for you

tahayk · 2022-02-23T18:32:42Z

@e3dio thank you very much for your help

ghost closed this as completed Feb 16, 2022

This issue was closed.

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Cannot perform %TypedArray%.prototype.set on a detached ArrayBuffer when using with Socket.io #705

Cannot perform %TypedArray%.prototype.set on a detached ArrayBuffer when using with Socket.io #705

tahayk commented Feb 16, 2022

e3dio commented Feb 16, 2022 •

edited

e3dio commented Feb 17, 2022 •

edited

e3dio commented Feb 17, 2022

ghost commented Feb 17, 2022

e3dio commented Feb 18, 2022

e3dio commented Feb 23, 2022

tahayk commented Feb 23, 2022

Cannot perform %TypedArray%.prototype.set on a detached ArrayBuffer when using with Socket.io #705

Cannot perform %TypedArray%.prototype.set on a detached ArrayBuffer when using with Socket.io #705

Comments

tahayk commented Feb 16, 2022

e3dio commented Feb 16, 2022 • edited

e3dio commented Feb 17, 2022 • edited

e3dio commented Feb 17, 2022

ghost commented Feb 17, 2022

e3dio commented Feb 18, 2022

e3dio commented Feb 23, 2022

tahayk commented Feb 23, 2022

e3dio commented Feb 16, 2022 •

edited

e3dio commented Feb 17, 2022 •

edited