在基本路径中使用 BlazorHub 的 Blazor-Server 通知？

Question

I'm trying to make the client side receive notifications in realtime using BlazorHub. In all the example that I have found, a hub gets mapped to it's own path like

endpoints.MapHub<ChatHub>("/chat");

but in my case the notification icon is on the top navbar which is shared by the whole app and visible at all time, like in Facebook for example. I tried mapping it to /_Host or / but it throws exceptions when I try to build the ConnectionHub that the url could not be determined.

The line endpoints.MapBlazorHub(); says it maps the blazorhub to the default path, do i have to use this one? if so, how?

Answer 1

Think of endpoints.MapHub<ChatHub>("/chat") like telling the server: "Hey. Start listening for SignalR connections at this address!".

In order to listen for notification from your server you create a HubConnection that points to /chat . Before you start the connection with hubConnection.StartAsync() , you should register your events with hubConnection.On() .

Take a look at the article linked by Brian in the comments.