as3收发数据包为何不成功

socket.addEventListener( Event.CONNECT, onConnect );
socket.addEventListener(ProgressEvent.SOCKET_DATA, P)
socket.connect( "localhost", 60011 );
b.writeInt(5)
socket.flush();
private function onConnect( event:Event ){
trace( "链接成功" );
}
private function P(e){
trace(e.target.readInt())
}