Is Socket.flush() necessary after reading data?

I am having problems with a project which makes intensive use of sockets with Smartfox Server. Sometimes, with Chrome, sockets d开发者_运维技巧ata seems to contain previous data (message from SFS are in double).

Anyway my question is pretty simple ; anytime you read data from a socket, are you supposed to call the flush() method after ? I know it's highly recommended to do so when you are sending data.

....
socket.addEventListener(ProgressEvent.SOCKET_DATA, handleSocketData);
....

private function handleSocketData(evt:Event):void
{
    var o:Object = socket.readObject();
    ....
    socket.flush(); // is that necessary???
}

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No. It is to flush the output data.

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No, you should read the response data with something like -

  while ( socket.bytesAvailable ) {
        var data:String = socket.readUTF();
        Alert.show(data);
  }

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We use Sockets in Flash with SFS server too. and we never flush the socket after reading, we only flush it (and must do) after writing to its byte buffer.