Socket InputStream.available may return a positive value after shutdown (original) (raw)
Chris Hegarty chris.hegarty at oracle.com
Wed Jul 13 14:13:28 PDT 2011
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On 07/13/11 06:39 PM, Alan Bateman wrote:
Jing LV wrote:
Hello,
Alan (or anyone else), do we have time to discuss these postponed defects? Or do you have a outlook for this? Thank you. Sorry for the late reply, I've been on vacation.
Sorry, I also meant to respond. Just got lost in all the noise recently.
I think now is a good time to discuss this one. As I mentioned in the initial discussion, the existing behavior is platform specific. Once shutdown for input, then the ioctl(FIONREAD) or equivalent will continue to return the number of bytes in the socket buffer, other platforms will return 0. Changing the implementation is trivial and the question is whether this is the right thing to do. We will also need to clarify the specification. Chris, Michael - do you have opinions on this one?
I can't see that anyone could be depending on the fact the available() would return > 0 after shutdownInput(), given that subsequent reads will always return -1. I just can't see why anyone would require this, but maybe I'm missing something.
-Chris.
-Alan.
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