I’ve covered the steps needed to host SignalR within a web application, but we’ve also seen we can connect to SignalR through a .NET client (in my case a simple Console app.). So next we’ll cover self-hosting SignalR. <\/p>\n
Requirements<\/strong> <\/p>\n At the time of writing you’ll need to install the following NuGet packages from Package Manager Console in Visual Studio<\/p>\n Install-Package Microsoft.AspNet.SignalR You can delete the scripts folder added by SignalR, we’re really just after the assemblies<\/p>\n Microsoft.AspNet.SignalR.Core So if you feel like only deploying the minimal assemblies you can remove anything else installed from those packages. <\/p>\n Edit: Since writing the above a couple of things seems to have changed on those packages, you’ll now need Microsoft.Owin assembly and WebApplication (in the below code) is now WebApp. The Server<\/strong><\/p>\n I’ve listed all the code above, it’s all pretty self-explanatory. The URL in the start method is the URL for the server and port etc. The timer is solely used to send out a message every 5 seconds for out client to see. I’ve listed the code for a simple client below (see my post on creating a .NET client for SignalR if you need more info. on this).<\/p>\n Client<\/strong><\/p>\n A simple .NET Console client…<\/p>\n If, you wish to access the server hub via JavaScript then the following is a simple example of the required JavaScript, note we create the proxy to the hub in the same way to the way we do this in the console client.<\/p>\n Note: The at least one proxy.on event handler must<\/strong> be set before the connection.start or you will be able to send messages but not receive them (see http:\/\/www.asp.net\/signalr\/overview\/hubs-api\/hubs-api-guide-javascript-client#establishconnection for more information).<\/p>\n","protected":false},"excerpt":{"rendered":" I’ve covered the steps needed to host SignalR within a web application, but we’ve also seen we can connect to SignalR through a .NET client (in my case a simple Console app.). So next we’ll cover self-hosting SignalR. Requirements At the time of writing you’ll need to install the following NuGet packages from Package Manager […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[47],"tags":[],"class_list":["post-520","post","type-post","status-publish","format-standard","hentry","category-signalr"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/520","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/comments?post=520"}],"version-history":[{"count":7,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/520\/revisions"}],"predecessor-version":[{"id":522,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/520\/revisions\/522"}],"wp:attachment":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/media?parent=520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/categories?post=520"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/tags?post=520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nInstall-Package Microsoft.Owin.Hosting -Pre
\nInstall-Package Microsoft.Owin.Host.HttpListener -Pre<\/p>\n
\nMicrosoft.AspNet.SignalR.Owin
\nMicrosoft.Owin.Host.HttpListener
\nMicrosoft.Owin.Hosting
\nOwin<\/p>\n
\n<\/em><\/p>\n\r\npublic class MyHub : Hub\r\n{\r\n public void Send(string message)\r\n {\r\n Clients.All.sendMessage(message);\r\n }\r\n}\r\n\r\ninternal class MyStartUp\r\n{\r\n public void Configuration(IAppBuilder app)\r\n {\r\n \/\/ the line below works fine with the console client but not the browser client\r\n \/\/ app.MapHubs();\r\n \/\/ use the following to enable the browser client to work with the server\r\n HubConfiguration config = new HubConfiguration();\r\n config.EnableCrossDomain = true;\r\n config.EnableDetailedErrors = true;\r\n app.MapHubs(config); \r\n }\r\n}\r\n\r\nclass Program\r\n{\r\n \/\/ just for demo purposes, will "beep" every 5 seconds\r\n private static Timer timer = new Timer(o =>\r\n {\r\n var context = GlobalHost.ConnectionManager.GetHubContext<MyHub>();\r\n context.Clients.All.sendMessage(DateTime.Now.ToLongTimeString() + " beep");\r\n });\r\n\r\n static void Main(string[] args)\r\n {\r\n using (WebApplication.Start<MyStartUp>("http:\/\/localhost:9100"))\r\n {\r\n \/\/ just for this demo\r\n TimeSpan ts = TimeSpan.FromSeconds(5);\r\n \t timer.Change(ts, ts);\r\n\r\n\t Console.WriteLine("Server is running, Press <Enter> to stop");\r\n\t Console.ReadLine();\r\n }\r\n }\r\n}\r\n<\/pre>\n\r\nstatic void Main(string[] args)\r\n{\r\n HubConnection connection = new HubConnection("http:\/\/localhost:9100");\r\n IHubProxy proxy = connection.CreateHubProxy("myHub");\r\n connection.Start().ContinueWith(task =>\r\n {\r\n proxy.Invoke("Send", ".NET Client Connected");\r\n\r\n proxy.On<string>("sendMessage", (message) =>\r\n {\r\n Console.WriteLine(message);\r\n });\r\n });\r\n Console.Read();\r\n}\r\n<\/pre>\n\r\n<script>\r\n $(function () {\r\n var connection = $.hubConnection("http:\/\/localhost:9100");\r\n var proxy = connection.createHubProxy('myHub');\r\n\r\n proxy.on("sendMessage", function (message) {\r\n $('#discussion').append('<li><strong>' + message + '<\/strong><\/li>');\r\n });\r\n\r\n connection.start().done(function () {\r\n proxy.invoke("Send", "Webpage client");\r\n }).fail(function () {\r\n $('#discussion').append('<li><strong>Failed to start<\/strong><\/li>')\r\n });\r\n });\r\n<\/script>\r\n<\/pre>\n