-1 and orderly socket shutdown

[Alan Bateman]

Leon Finker wrote:
> I was referring to AsynchronousSocketChannel. But I guess it's to keep it
> the same as SocketChannel. In AsynchronousSocketChannel one would not get 0
> bytes read for tcp, correct? One can get 0 bytes for udp.
>   
If you invoke AsynchronousSocketChannel#read with a buffer that has 0 
bytes remaining then it completes immediately with a result of 0 (no I/O 
operation is initiated).

-Alan.