Message 223537 - Python tracker

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Author	vstinner
Recipients	gvanrossum, loewis, neologix, pitrou, vstinner, yselivanov
Date	2014-07-20.21:10:59
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<[email protected]>
In-reply-to

Content
Guido wrote: "I don't know much about how sockets are implemented on Windows; is there a guarantee that the space of possible socket fds doesn't overlap the space of possible stream fds?" Python has a low-level _PyVerify_fd() which uses the __pioinfo private array. It looks socket "handles" (small integers betwen 256 and 1000 in my quick tests) and file descriptors overlap. Files get file descriptors between 0 and 2047.

Guido wrote:
"I don't know much about how sockets are implemented on Windows; is there a guarantee that the space of possible socket fds doesn't overlap the space of possible stream fds?"

Python has a low-level _PyVerify_fd() which uses the __pioinfo private array. It looks socket "handles" (small integers betwen 256 and 1000 in my quick tests) and file descriptors overlap. Files get file descriptors between 0 and 2047.

History
Date	User	Action	Args
2014-07-20 21:10:59	vstinner	set	recipients: + vstinner, gvanrossum, loewis, pitrou, neologix, yselivanov
2014-07-20 21:10:59	vstinner	set	messageid: <[email protected]>
2014-07-20 21:10:59	vstinner	link	issue22018 messages
2014-07-20 21:10:59	vstinner	create