Function watchMessage() in Angular is never called?

[manhhungptit]

Hi, I'm using your plugin in a Ionic app build with Angular and Capacitor build.

In the app, I create a WebSocket Server instance, then using watchMessage().subscribe to listen to any message that come. Here is my service class

import { WebSocketServer } from '@ionic-native/web-socket-server/ngx';

import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class WebsocketServerService {

  constructor(private wsserver: WebSocketServer) {}

  async init() {
    if ((window as any)?.cordova) {
      console.log('Websocket init');
      this.wsserver.start(8888, {}).subscribe({
        next: server => console.log(server, `Websocket Server: Listening on ${server.addr}:${server.port}`),
        error: error => console.log(`Websocket Server: Unexpected error`, error),
      });

      console.log('Websocket Server: start handler');

      // --> this is never called
      this.wsserver.watchMessage().subscribe(msg => {
        console.log('Websocket Server: got msg: ', msg);
      });
    } else {
      console.log('Websocket Server: cant start, cordova not available');
    }
  }

  public stop() {
    return this.wsserver.stop();
  }

  public send() {}

}

The connection is established and connected well with a websocket client, but after I sent a message "Hello" from websocket client, the subscribe callback function was not called, even though the log on the device show this:

WebSocketServer: Server should accept request: http://192.168.31.69:8888/ WebSocketServer: WebSocket did open WebSocketServer: Websocket did receive message: Hello

Thank you.

[souravsasmal]

Hi there,

Did you resolve it? I am also having the same problem. If you have found any solution, please let me know.

Thanks.

[chetan-prime]

The ionic wrapper is broken, at least with the current version of the plugin. The only way I could use in angular is drop the watch* subscribe functions and instead use the javascript like API via wsServer.

let wsOpts = {
  'onOpen': (conn) => {
    // your code
  },
  'onMessage': (conn, msg) => {
    // your code
  }, ...
};

this.wsServer.open(<WebSocketOptions> wsOpts);