firefox os - mozTCPSocket.listen API didnt work well? -

firefox os - mozTCPSocket.listen API didnt work well? -

every time, when onconnect evet been fired, evt object awalys null, can't recieve anthing, problem is?

function startlisten(){ var socketserver = navigator.moztcpsocket.listen(1020); socketserver.onconnect = function(evt){ alert("connect"); alert(evt); socketserver.close(); } socketserver.onerror = function(evt){ var error = evt.data; alert(error); }

}

firefox-os