Detecting connection end

[René Brüntrup]

Hello!

I try to write a simple server that accepts connections from clients and 
receives data until the other end closes the connection. I tried to use 
TCPSession and SimpleTCPStream with loops to receive the data. But all methods 
that should change their return values with an connection end (isConnected(), 
isActive(), ...) always indicate correct connections and I do not know how to 
exit from the receiving loop. In short:
How do I detect closed connections?

Greetings, René

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