import { WebServer } from '@awesome-cordova-plugins/web-server/ngx';
constructor(private webServer: WebServer) { }
...
this.webServer.onRequest().subscribe(data => {
  console.log(data);
  const res: Response = {
    status: 200,
    body: '',
    headers: {
      'Content-Type': 'text/html'
    }
  };
  this.webServer.sendResponse(data.requestId, res)
    .catch((error: any) => console.error(error));
});
this.webServer.start(80)
  .catch((error: any) => console.error(error));