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 There is a chance that some answers will become out of date.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
The Microsoft.Owin.Host.HttpListener assembly is a runtime reference in WebApp.Start. You need to include it in the project’s references for it to be available for loading. Check the bin\Debug (etc) directory to make sure it’s included. May as well add it as a nuget dependency as well.
This is the correct way for SignalR 2.x: var context = GlobalHost.ConnectionManager.GetHubContext<MyHub>(); context.Clients.All.addMessage(message); Basically, you can use the dependency resolver for the current host to resolve the IConnectionManager interface which allows you to get ahold of the context object for a hub. Further information can be found in the official documentation.
Try to use Package Manage Console and do Update-Package Owin -Reinstall
See the docs for the latest: Persistent connections – https://github.com/SignalR/SignalR/wiki/PersistentConnection Hubs – http://www.asp.net/signalr/overview/guide-to-the-api/hubs-api-guide-server
SignalR is like Socket.IO in that it supports transport negotiation/fallback. It is a framework and not a server, so you need to host it on a server of some sort. We have hosts for ASP.NET, OWIN (e.g. Kayak) and self-host, so you can run it in your own process easily, e.g. a Windows service. SignalR … Read more
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.
Solution 1 Another possibility is to inject your HubContext into your controller like: public VarDesignCommController(IHubContext<VarDesignHub> hubcontext) { HubContext = hubcontext; … } private IHubContext<VarDesignHub> HubContext { get; set; } Then you can also call await this.HubContext.Clients.All.InvokeAsync(“Completed”, id); But then you will direct call methods on all clients. Solution 2 You can also work with typed … Read more
SignalR is a viable alternative to Socket.IO and Node.js. There are other reasons to use javascript on the server however. It flattens the stack. Almost any website these days has to have javascript on the browser, and if you use it on the server as well, you can cut one language out of the batch … Read more