Can SignalR client use service discovery?

[VincentH-Net]

I'd like to deploy a (Blazor) chat client app together with its ASP.NET chat service in an Aspire app.

AppHost project:

var service = builder.AddProject<Projects.Service>("service");
builder.AddProject<Projects.BlazorSignalRApp>("blazorsignalrapp").WithReference(service);

Service project:

app.MapHub<ChatHub>("/chathub", options => {
    options.AllowStatefulReconnects = true;
});

Blazor project:

hubConnection = new HubConnectionBuilder()
.WithUrl("http://service/chathub"

All projects are Aspire enabled and call AddServiceDefaults(), which should configure all HttpClients with service discovery, however the URL for the SignalR client does not seem to be modified by service discovery; on navigating to the blazor application from the Aspire dashboard, it throws:

HttpRequestException: No such host is known. (service:80)

(How) can Aspire Service Discovery be used for the URL of an ASP.NET Core SignalR Client?

[mohdali]

I have the same query and currently can't find any reference to help with this.

[davidfowl]

See #1356