问SignalR PersistentConnection国庆日平或由js客户端发送自定义Ping

EN

    public class Global : System.Web.HttpApplication
    {
        private static List<UserInfo> _Users;
        public static List<UserInfo> Users
        {
            get { return Global._Users; }
            set
            {
                lock (_Users)
                {
                    Global._Users = value;
                }
            }
        }
    ...

       public class RawHub : PersistentConnection
        {

            protected override Task OnConnected(IRequest request, string connectionId)
            {
                var UserID = request.QueryString.Where(t => t.Key == "U");
                if (!string.IsNullOrEmpty(UserID.First().Value))
                {
                    var ui = new Guid(UserID.First().Value);
                    var user = Global.Users.FirstOrDefault(x => x.USERID == ui);
                    if (user == null)
                    {
                        var us = new UserInfo();
                        us.USERID = ui;
                        us.ConnectionId = connectionId;
                        Global.Users.Add(us);
                    }
                    else
                    {
                        user.ConnectionId=connectionId;
                    }
                    return Connection.Send(user.ConnectionId,"Good To Go");
                }            
            }