Flutter Web - can not authorized

[mrleesin]

Flutter web connected, but w/o authorisation. Tying everything ((
the same code working good on iOS and android

[MarceloRab]

Exactly the same thing that happens to me. I've been trying for 8 hours and nothing. 😒. Web app on localHost and Android works perfectly.

Only on flutter web and with server it doesn't work..❗

Site = > https://.... (Vercel)
Server = > https://... (Render)

My versions.
Flutter 3.19.0
Dart 3.3.0
socket_io_client 2.0.3+1

All these measures did not work.

1. Downgrade Socket.io node from 4.7.4 => 4.6.2. 👉 Doesn't work

2. Flutter = >

IO.io(socketUrl, <String, dynamic>{ 'autoConnect': false, 'transports': ['websocket'], 'rejectUnauthorized': false, 'withCredentials': false, });

👉 Doesn't work

3. Node Server = >

this.io = new socketIo.Server(this.server, { colors: { origin: [ ''my_cors", //"*", ], credentials: false,

👉 Doesn't work

Error thrown ▶ timeout in all states.

[kartik-dcx]

@MarceloRab Can you please tell me or send me the configuration(web app side) on how you connected socket in flutter web? For me, the socket doesn't work on localhost too. I am getting xhr poll error and the request URL is not wss but https (with transport as polling). Specifying transport as websocket doesn't work in Flutter Web.

[MarceloRab]

@kartik-dcx This project is already 6 months old. I don't know if the dependencies have been updated. Today I use firebase and have had no problems with real time.

Flutter side

https://gist.github.com/MarceloRab/9100a31439219fa045f0278a2d4427ef

TS side

https://gist.github.com/MarceloRab/c0deff2a3db0d96ae72baa84830ae278