the problem was about comparing 2 client to see if the were already connected.
I working on an websocket server aand in the main handler, I'm facing an issue:
I do not know all the specification no...
but still, The websocker server have an instance of ethernetServer, then store client in an array, it look to work still...
But I really that I could compare 2 client... I think i will comeback will a pointer to client as the previous version, then I could compare the 2 pointer, and that work...
Thank ( if you have any resource I can look about, feel free.. 
)
Regards
Nitrof