GWT client server communication

Hi,
I have this code wherein i have a TCP client server communication
happening.The server reads a file which has integers stored in it and
sends response to each client .The server spawns a new thread for each
client.
I need to make use of GWT to show a fish moving with new updates from
server.
Now i cannot have TCP class on client side as GWT would not allow
socket library on client side.So i create a new TCP client on
server(GWT server) and things work.
But I cannot create multiple TCP clients (multiple tabs opened) as
GWT server is singleton.
So i thought of creating a new TCP client on each new request from
browser but i cannot keep track of which client made the request as
each is a new process and there is no connection between tabs.

So I am little stuck here.

So in short there are 2 problems.
1.Can i have TCP library on client side.(If yes then no need for
second problem)
2.If not then i need to create a new TCP client at GWT server (RPC)
and keep track of which client did that and send updates to that
client.Since each client would have a different data on TCP server
read.

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