ed0668384b
Motivation: AbstractNioByteChannel will detect that the remote end of the socket has been closed and propagate a user event through the pipeline. However if the user has auto read on, or calls read again, we may propagate the same user events again. If the underlying transport continuously notifies us that there is read activity this will happen in a spin loop which consumes unnecessary CPU. Modifications: - AbstractNioByteChannel's unsafe read() should check if the input side of the socket has been shutdown before processing the event. This is consistent with EPOLL and KQUEUE transports. - add unit test with @normanmaurer's help, and make transports consistent with respect to user events Result: No more read spin loop in NIO when the channel is half closed. |
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