SignalR 2.0 Hub public method not accecible via Java Script - signalr

Question

I'm trying to get list of connected users by using the following server code in SignalR hub. For store in-memory data I'm using following class:
public class UserInfo
{
public string ConnectionId { get; set; }
public string UserName { get; set; }
public string Role { get; set; }
}
When user connected I'm adding user to the list of connected users:
public override Task OnConnected()
{
if (Context.User.Identity.IsAuthenticated)
{
if (Context.User.IsInRole("User"))
{
ui.Add(new UserInfo { ConnectionId = Context.ConnectionId, UserName = Context.User.Identity.Name, Role = "User" });
}
else
{
ui.Add(new UserInfo { ConnectionId = Context.ConnectionId, UserName = Context.User.Identity.Name, Role = "Operator" });
}
}
return base.OnConnected();
}
Here is the way I'm getting list of currently connected users:
public IEnumerable<UserInfo> GetUsers()
{
var x = (from a in ui where a.Role == "User" select new UserInfo { UserName = a.UserName, ConnectionId = a.ConnectionId }).ToList();
return x;
}
public IEnumerable<UserInfo> GetOperators()
{
var y = (from a in ui where a.Role == "Operator" select new UserInfo { UserName = a.UserName, ConnectionId = a.ConnectionId }).ToList();
return y;
}
Unfortinately public method GetOperators/GetUsers not accessible and I did not receive data on client side:
$(function () {
// Declare a proxy to reference the hub.
var chat = $.connection.chatHub;
//Here I'm calling hub public methods
chat.getOperators = function (data) {
alert(data);
};
chat.getUsers = function (data) {
alert(data);
};
// Create a function that the hub can call to broadcast messages.
chat.client.addChatMessage = function (name, message) {
// Html encode display name and message.
var encodedName = $('<div />').text(name).html();
var encodedMsg = $('<div />').text(message).html();
// Add the message to the page.
$('#discussion').append('<li><strong>' + encodedName
+ '</strong>: ' + encodedMsg + '</li>');
};
// Get the user name and store it to prepend to messages.
$('#displayname').val(prompt('Enter your name:', ''));
// Set initial focus to message input box.
$('#message').focus();
// Start the connection.
$.connection.hub.start().done(function () {
$('#sendmessage').click(function () {
// Call the Send method on the hub.
chat.server.sendChatMessage($('#displayname').val(), $('#message').val());
// Clear text box and reset focus for next comment.
$('#message').val('').focus();
});
});
});

Answer 1

Your syntax for the calls to the server is wrong; this here:
chat.getUsers = function (data) {
alert(data);
};
will simply define chat.getUsers to be a function.
You probably want
chat.server.getUsers().done(function(data) {
console.log(data);
}).fail(function(error) {
console.log("failed to get data", error);
});
Take another look at the documentation.

Answer 2

please can you try this
//on your client action do a server call
chat.server.getOperators();
and
//on your client action do a server call
chat.server.getUsers();
instead of
chat.getOperators = function (data) {
alert(data);
};
chat.getUsers = function (data) {
alert(data);
};