public void OpenXmppConnection(bool autoPresence,int port)
        {
            try
            {
                //check wheather the connection already establish or not
                if(xmppClientConnection==null) //check already connected?
                {
                    xmppClientConnection = new XmppClientConnection();
                }
                xmppClientConnection.AutoPresence = true;

                xmppClientConnection.AutoResolveConnectServer = true;
                xmppClientConnection.Port = 5222;
                xmppClientConnection.UseSSL = false;
                xmppClientConnection.Server = "bilal@192.168.0.151";
                xmppClientConnection.Username = "bilal";
                xmppClientConnection.Password = "pass123";

            }
            catch(Exception ex)
            {

            }
        }