Probably the most used solution is to keep a static variable containing users currently connected and overriding OnConnect and OnDisconnect or implementing IDisconnect depending on the version that you use. You would implement something like this: public class MyHub : Hub { private static List<string> users = new List<string>(); public override Task OnConnected() { users.Add(Context.ConnectionId); … Read more
The problem was solved by setting the following flags in the web.config. <configuration> <system.webServer> <validation validateIntegratedModeConfiguration=”false” /> <modules runAllManagedModulesForAllRequests=”true”> </modules> </system.webServer> </configuration> For some reason Nuget did not set these values for Elmah or SignalR
You need to use GetHubContext: var context = GlobalHost.ConnectionManager.GetHubContext<chatHub>(); context.Clients.All.Send(“Admin”, “stop the chat”); This is described in more detail at http://www.asp.net/signalr/overview/signalr-20/hubs-api/hubs-api-guide-server#callfromoutsidehub.
I finally figured this out. Here’s what I’ve learned since starting this question: Background: We’re building an iOS app using Xamarin / Monotouch and the .NET SignalR 2.0.3 client. We’re using the default SignalR protocols – and it seems to be using SSE instead of web sockets. I’m not sure yet if it’s possible to … Read more
You can’t mix the .NET Core 1.x with the older client (1.x or 2.x). You will need to decide which is the best option for you but you need to implement the same compatible version across CLIENT and SERVER. Check the link for more details but essentially: What’s Changed? We added a number of new … Read more
SignalR connections (including the connection underlying all Hub operations for a client) do not support Session state. You could enable it if you wanted to but we’d strongly recommend against it as session state access serializes requests for a given client, meaning you won’t really get the benefit from SignalR duplex messaging anymore, as one … Read more
I found the final solution, this is the code of my OWIN startup class: public void Configuration(IAppBuilder app) { app.MapSignalR(); // Enable the application to use a cookie to store information for the signed i user app.UseCookieAuthentication(new CookieAuthenticationOptions { AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie, LoginPath = new PathString(“/Home/Index”) }); // Use a cookie to temporarily store information … Read more
There is no way to get this count from SignalR as such. You have to use the OnConnect() and OnDisconnect() methods on the Hub to keep the count yourself. Simple example with a static class to hold the count: public static class UserHandler { public static HashSet<string> ConnectedIds = new HashSet<string>(); } public class MyHub … Read more
Please note that the SignalR API has changed multiple times since this question was asked. There is a chance that some answers will become out of date. This does not mean that they should be down-voted as they were correct at the time of writing There is another updated answer for this, as seen in … Read more