Issue

So I have this issue with Socket.io-client (^2.3.0) running on React Native (0.61.5). I already submitted an issue on GitHub, but I'm hoping someone here can help me out.

So first of all: my code works on iOS, but not on Android.

Steps to reproduce

Environment:

• React Native 0.61.5
• React 16.9.0
• Socket.io-client ^2.3.0
• Android Studio: Android 9.0 Pie API 28

Front end code (simplified): React Native

import io from 'socket.io-client';

useEffect(() => {
    socket = io('https://127.0.0.1:8001', {
        secure: true,
        transports: ['websocket']
    })
    socket.on('message', () => console.log('message received'))
    // cleanup
    return () => socket.close()
}, [])

Back end code (simplified): NodeJS

const io = require('socket.io')(https)

io.on('connection', socket => {
    console.log('connection established')
    socket.on('disconnect', () => console.log('disconnected'))
})

What I did so far?

I tried a few things before submitting an issue and asking this question here. First of all, I tried adding android:usesCleartextTraffic=true to AndroidManifest.XML. It's suggested here and here. I also tried to downgrade socket.io-client to 2.1.0 and even 2.0.4.

Both steps did not work.

Does anyone have an idea what could be the fix of this problem? I need to use websockets, if there is a workaround (or another library), please let me know!