Интеграция SignalR с версией ABP Angular

Вы можете сделать это в ngOnInit из AppComponent в app.component.ts:

export class AppComponent extends AppComponentBase implements OnInit {
    ...

    ngOnInit(): void {
        ...

        // SignalRAspNetCoreHelper.initSignalR(); // Replace this line with the block below
        SignalRAspNetCoreHelper.initSignalR(() => {
            var chatHub = null;

            abp.signalr.startConnection(abp.appPath + 'signalr-myChatHub', function (connection) {
                chatHub = connection; // Save a reference to the hub

                connection.on('getMessage', function (message) { // Register for incoming messages
                    console.log('received message: ' + message);
                });
            }).then(function (connection) {
                abp.log.debug('Connected to myChatHub server!');
                abp.event.trigger('myChatHub.connected');
            });

            abp.event.on('myChatHub.connected', function() { // Register for connect event
                chatHub.invoke('sendMessage', "Hi everybody, I'm connected to the chat!"); // Send a message to the server
            });
        });

        ...
    }

    ...
}