[Python-Dev] PEP 446: issue with sockets (original) (raw)

Victor Stinner victor.stinner at gmail.com
Wed Aug 21 14:50:51 CEST 2013

2013/8/21 Richard Oudkerk <shibturn at gmail.com>:

On 21/08/2013 1:19am, Victor Stinner wrote:

I don't know if a socket handle is similar to file handles or if they are specials. At least, GetHandleInformation() and SetHandleInformation() functions, used by os.get/sethandleinheritable(), accept socket handles. Anti-virus software and firewalls can stop SetHandleInformation() from working properly on sockets: http://stackoverflow.com/questions/12058911/can-tcp-socket-handles-be-set-not-inheritable

Yeah, I know, I already added the link to the PEP.

I improved the implementation of the PEP 446: it now uses the WSA_FLAG_NO_HANDLE_INHERIT flag when it is available (Windows 7 SP1 and Windows Server 2008 R2 SP1, which is probably a minor percentage of Windows installations).

On older Windows versions, I don't see what Python can do to workaround the issue except of calling SetHandleInformation() on the result of WSASocket().

Victor

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