onMessage data queue

[oriko]

Hi

I am using angular-websocket for my websocket implementation, when using the onMessage I can see a strange behavior, each time I am receiving my data back I can see that the onMessage is called also backward for my old data.

 dataStream.onMessage(function(message) {
                var data = JSON.parse(message.data);

 });

for example:
on first msg - onMessage called 1 time data = x .
on second msg - onMessage called 2 times data = x ->data = y .
on third msg - onMessage called 3 times data = x ->data = y ->data=z

Is there a way to avoid the backward calls with the old data?