slashP

public class ChatHub : Hub
{
    public void GetAll()
    {
        using (var db = new DataContext())
        {
            var messages = db.ChatMessages.OrderByDescending(x => x.Id).Take(10).ToList();
            Clients.Caller.SendMessage(messages.Select(x => new { x.Message, x.User }));
        }
    }

slashP

public class TorrentHub : Hub
{
    public void Ping(string message)
    {
        Clients.All.Ping(message);
    }

    public void UpdateTorrents(string json)
    {
        Clients.All.UpdateTorrents(json);