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From Jeff Trawick <traw...@gmail.com>
Subject Re: svn commit: r1089031 - in /apr/apr/trunk: CHANGES network_io/win32/sockets.c
Date Wed, 13 Apr 2011 18:11:19 GMT
On Wed, Apr 13, 2011 at 1:51 PM, William A. Rowe Jr.
<wrowe@rowe-clan.net> wrote:
> On 4/13/2011 9:53 AM, Jeff Trawick wrote:
>> On Tue, Apr 5, 2011 at 9:28 AM,  <trawick@apache.org> wrote:
>>> Author: trawick
>>> Date: Tue Apr  5 13:28:59 2011
>>> New Revision: 1089031
>>>
>>> URL: http://svn.apache.org/viewvc?rev=1089031&view=rev
>>> Log:
>>> restructure Windows apr_socket_connect() to more closely match
>>> the Unix implementation, fixing the getpeername() optimization
>>> and WSAEISCONN behavior
>>>
>>> PR: 48736 (covered WSAISCONN issue)
>>> Submitted by: <inoue ariel-networks.com> (WSAISCONN handling)
>>> Reworked/extended by: trawick
>>
>> trivia: getpeername() fails for a connected IPv6 socket on XP; this
>> change to get the getpeername() optimization to work "fixes" that for
>> the common case
>
> Is this another aspect of the same flaw we just worked through, when I last
> attempted to normalize this?  (That one broke IP addresses on win2k, see
> for example https://issues.apache.org/bugzilla/show_bug.cgi?id=41693 ).

That one is hard to follow...  It points to another bug, that one said
Win32DisableAcceptEX was a work-around, and there's a later update
from you saying "solved after 2.2.4 for windows 2000".

I'll look a little further for earlier bug fixes.

>> I'll probably backport this to 1.4.x for other reasons (but after 1.4.3).
>
> So if we tag httpd-2.3-something against 1.4.3, with IPv6 enabled, we will
> start collecting similar reports to the one above, for XP IPv6 connections?
>

In testing 1.4.latest on XP this a.m. I didn't see an issue with my
simple server app which retrieved local and remote addresses, as the
getpeername() optimization on that side of the connection is working.

apr_socket_accept() has this line to let it use the info from accept()
instead of calling getpeername():     (*new)->remote_addr_unknown = 0;

With 1.4.latest, the getpeername() optimization on the client side is
not working, and getpeername() on IPv6 is where the XP bug is.

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