Connection through transports: ['websocket'] only

[agarzas]

Which platform(s) does your issue occur on?

• Android
• Device
• CLI: 4.2.2
• Cross-platform modules: 4.2.0
• Plugin(s): 3.1.5

Is this plugin capable of establish connections through websockets only?
If I set the socket.io sever as: transports: ['websocket'] I get a lot of logs saying:

engine intercepting request for path "/socket.io/" +34s
engine handling "GET" http request "/socket.io/?EIO=3&token=ABC&transport=polling" +0ms
engine unknown transport "polling" +0ms

Here is my code:
`socket:SocketIO

constructor(
    private _authenticationHandlerService: AuthenticationHandlerService,
    private _routerExtensions: RouterExtensions,
    private _ngZone: NgZone
) {
    let options: IOOptions = {
        query: {
            token: "ABC"
        },
        debug: true,
        forceWebsockets: true,
    }
    this.socket = new SocketIO("http://{local-ip}", options)
}`

this.socket.connect();

It only works when I set the server to accept 'polling' and then it can´t upgrade to websockets...

[triniwiz]

forceWebsockets: true is for ios I think android uses transports:['websocket'] I'll try adding a common prop for both platforms

[NazimMertBilgi]

It doesn't work in Angular. There is also no key called transports.

@triniwiz please help me

[NazimMertBilgi]

I solved my problem in this link. The problem was caused by my settings from Nginx.

socketio/socket.io#1942 (comment)