SignalR .Net client: How do I send a message to a Group?

Question

I am using the sample Chat application from the SignalR Wiki Getting Started Hubs page. I have extended it to add Group support and it is working fine.

However, now I want to send a message to the group from an external Console application. Here is my code for the Console app and below that my code for Groups. How do I send a message to a Group from a proxy? Is it possible?

// Console App using System; using Microsoft.AspNet.SignalR.Client.Hubs;  namespace SignalrNetClient {     class Program     {         static void Main(string[] args)         {             // Connect to the service             var connection = new HubConnection("http://localhost:50116");             var chatHub = connection.CreateHubProxy("Chat");              // Print the message when it comes in             connection.Received += data => Console.WriteLine(data);              // Start the connection             connection.Start().Wait();              chatHub.Invoke("Send", "Hey there!");              string line = null;             while ((line = Console.ReadLine()) != null)             {                 // Send a message to the server                 connection.Send(line).Wait();             }         }     } } 

SignalR Web App Host:

namespace SignalrServer.Hubs {     public class Chat : Hub     {         public void Send(string message)         {             // Call the addMessage method on all clients                         Clients.All.addMessage(message);             Clients.Group("RoomA").addMessage("Group Message " + message);         }          //server         public void Join(string groupName)         {             Groups.Add(Context.ConnectionId, groupName);         }     } } 

Default.aspx

<script src="http://code.jquery.com/jquery-1.8.2.min.js" type="text/javascript"></script> <script src="Scripts/jquery.signalR-1.0.1.min.js" type="text/javascript"></script> <!--  If this is an MVC project then use the following --> <!--  <script src="~/signalr/hubs" type="text/javascript"></script> --> <script src="signalr/hubs" type="text/javascript"></script> <script type="text/javascript">     $(function () {         // Proxy created on the fly                   var chat = $.connection.chat;          // Declare a function on the chat hub so the server can invoke it                   chat.client.addMessage = function (message) {             $('#messages').append('<li>' + message + '</li>');         };          $.connection.hub.start(function () {             chat.server.join("RoomA");         });          // Start the connection         $.connection.hub.start().done(function () {              $("#broadcast").click(function () {                 // Call the chat method on the server                 chat.server.send($('#msg').val());             });         });     }); </script>    <div>     <input type="text" id="msg" /> <input type="button" id="broadcast" value="broadcast" />  <ul id="messages"> </ul>   </div> 

Answer 1

What I have done with something similar is to create a method which accepts an object of your choice, e.g.

Your new class

public class MyMessage{     public string Msg { get; set; }     public string Group { get; set; } } 

Then create a method in the Hub that accepts this object.

public void Send(MyMessage message) {     // Call the addMessage method on all clients                 Clients.All.addMessage(message.Msg);     Clients.Group(message.Group).addMessage("Group Message " + message.Msg); } 

Then from your client, you can then pass this object in.

chatHub.Invoke<MyMessage>("send", new MyMessage() { Msg = "Hello World", Group = "RoomA" }); 

You can then also call this from the JS client

chat.server.send({ Msg: "Hello World", Group: "RoomA" });