Bugs item #1482328, was opened at 2006-05-05 09:22
Message generated for change (Comment added) made by splitscreen
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: ganges master (gangesmaster)
Assigned to: Nobody/Anonymous (nobody)
Summary: socket.getsockopt bug

Initial Comment:
i tested this on windows xp. the installed python
version is the 2.4.3 from the windows MSI.

when doing socket.getsockopt with buffer_size > 0, for
options like SO_LINGER or SO_SNDTIMEO, i get only 4 bytes. 
although the man pages state these options hold 8
bytes. is this a bug in the pythonic version of
getsockopt or winsock?

-tomer

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Comment By: Matt Fleming (splitscreen)
Date: 2006-05-05 13:12

Message:
Logged In: YES 
user_id=1126061

According to http://www.sockets.com/winsock.htm#GetSockOpt

"The integer pointed to by optlen should originally contain
the size of this buffer; on return, it will be set to the
size of the value returned. For SO_LINGER, this will be the
size of a struct linger; for all other options it will be
the size of an integer." 

The size of a linger struct is 4 bytes. 

I would agree that the Python documentation for
socket.getsockopt is a little confusing.

"Get a socket option.  See the Unix manual for level and
option. If a nonzero buffersize argument is given, the
return value is a string of that length; otherwise it is an
integer."

Perhaps just refer users to the OSes documentation on its
implementation of sockets?

Matt


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