A repo for an issue when trying to join a group using SignalR.RabbitMq

chat.cs

using System;
using System.Threading.Tasks;
using Microsoft.AspNet.SignalR;

namespace SignalR.RabbitMq.Example
{
    public class Chat : Hub
    {
        private static int _id = 0;
        public void Send(string message)
        {
            Clients.All.addMessage(string.Format("{0} - {1}", message, _id), Context.ConnectionId);
            Clients.Others.addMessage(string.Format("Some one said - {0} - {1}", message, _id), Context.ConnectionId);
            _id++;
        }

        private const string GroupName = "SecretGroup";
        public void SendGroup(string message)
        {
            Clients.Group(GroupName).addMessage(string.Format("{0} - {1}", message, _id), GroupName);
        }

        public Task JoinGroup(string groupName)
        {
            return Groups.Add(Context.ConnectionId, GroupName);
        }
    }
}

Index.cshtml

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

  
  <input type="text" id="msg" />
  <a id="broadcast" href="#">Send message</a>
  <a id="joingroup" href="#">Join group</a>
  <a id="sendgroup" href="#">Send group message</a>

<p>Messages : </p>
<div id="console">  </div>
<ul id="messages">  </ul>


<script type="text/javascript">
    $(function () {
        
        // Proxy created on the fly
        var chat = $.connection.chat;
        $.connection.hub.logging = true;
        
        // Declare a function on the chat hub so the server can invoke it
        chat.client.addMessage = function (message, from) {
            $('#messages').prepend('<li>' + message  + " from " + from + '</li>');
        };

        chat.client.onConsoleMessage = function (message) {
            $('#console').html('From the console application : ' + message);
        };

        $("#broadcast").click(function () {
            // Call the chat method on the server
            chat.server.send($('#msg').val())
             .done(function () {
                 console.log('Success!');
             })
             .fail(function (e) {
                 console.warn(e);
             });
        });

        $("#sendgroup").click(function () {
            // Call the chat method on the server
            chat.server.sendGroup($('#msg').val())
             .done(function () {
                 console.log('Success!');
             })
             .fail(function (e) {
                 console.warn(e);
             });
        });

        $("#joingroup").click(function() {
            chat.server.joinGroup("SecretGroup")
             .done(function () {
                 console.log('Success!');
                 $("#joingroup").hide();
                 $("#sendgroup").show();
             })
             .fail(function (e) {
                 console.warn(e);
             });
        });
        
        $("#broadcast").hide();
        $("#joingroup").hide();
        //$("#sendgroup").hide();

        // Start the connection
        $.connection.hub.start(function () {
            $("#broadcast").show();
            $("#joingroup").show();
            console.log("Success");
        });
    });
  </script>