如何获取使用带有 owin 身份验证的客户端 mvc 应用程序的 SignalR 连接用户的身份？

Question

In my solution, I have 2 projects : SignalRServer , WebClient which are both MVC application . In my server, I've used SignalR 2 Hub and in client project I've used jquery SignalR library to connect to hub server by passing hosted server url as hub connection url.

Everything is working as well and client can receive messages from server.

The problem : In client project I have added authentication and users must enter their username and password to view the page which messages are going to be viewed. Now I want to get the signed in username which has connected to SignalR Hub Server and send related messages to each user using this username.

How do I know which user has connected to server while the authentication is processing in client project separated from server project ?

JQuery client hub:

var PbxHub = $.connection.pbxhub;

$.connection.hub.url = "http://localhost:10437/signalr";
$.connection.hub.logging = true;

$.connection.hub.start({
    jsonp: true,
    withCredentials: false
}).done(function () {
    console.log('Hub is connected.');
});

$.connection.hub.disconnected(function () {
    console.log('Hub is disconnected.');
    setTimeout(function () {
        $.connection.hub.start();
    }, 1500); // Restart connection after 1500 miliseconds.
});

Client Startup:

public void Configuration(IAppBuilder app)
{
    app.UseCookieAuthentication(new CookieAuthenticationOptions
    {
        AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
        LoginPath = new PathString("/Home/Login"),
    });
}

Server Startup:

    public void Configuration(IAppBuilder app)
    {
        app.Map("/signalr", map =>
        {
            var hubConfiguration = new HubConfiguration
            {
                EnableJavaScriptProxies = true,
                EnableJSONP = true,
                EnableDetailedErrors = true
            };

            map.UseCors(CorsOptions.AllowAll);
            map.RunSignalR(hubConfiguration);
        });
    }

Appreciated for any idea.

Answer 1

As described by Microsoft documentation at here https://docs.microsoft.com/en-us/aspnet/core/signalr/authn-and-authz?view=aspnetcore-3.1#cookie-authentication

In a browser-based app, cookie authentication allows your existing user credentials to automatically flow to SignalR connections. When using the browser client, no additional configuration is needed. If the user is logged in to your app, the SignalR connection automatically inherits this authentication.

So, by using same DBContext which used in client app , I could access to connectionId of users which connected to hub and either insert records to database after sending them messages.

    if (_context.Extension.Any(ex=>ex.Code.ToString() == deviceName))
    {
        extensionID = _context.Extension.SingleOrDefault(ex => ex.Code.ToString() == deviceName).ID.ToString();
    }
    else { return; }

    asterHub.Clients.User(extensionID).SendState(
            e.Device_state.Name,
            string.Format("{0}:{1}:{2}",
                pc.GetHour(DateTime.Now),
                pc.GetMinute(DateTime.Now),
                pc.GetSecond(DateTime.Now)),
            state,
            stateCode);