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Reply to topic   Topic: Apache 2.4.1 Win32 & 64 available
Author
Steffen
Moderator


Joined: 15 Oct 2005
Posts: 2857
Location: Hilversum, NL, EU

PostPosted: Wed 15 Feb '12 14:01    Post subject: Apache 2.4.1 Win32 & 64 available Reply with quote

Be aware that this is fairly new. For the latest stable, download the proven Stable 2.2.22 version.

For a known issue with SSL, see below.

6 March 2012:
Build with VC10, we keep supplying VC9 Win32 builds at the Additional download page.

1 March 2012:
APR fix for Win64, see Changelog.


Changelog http://www.apachelounge.com/Changelog-2.4.html

Documentation: http://httpd.apache.org/docs/2.4/ attention there to Upgrading to 2.4 from 2.2

Steffen


SSL issue.


The issue which already reported by me back in June 2011, did not had the wright attention from ASF and was ignored. Now it is too hard for them to solve it in time for GA. I feel that it has still not high priority at the ASF and are not going out there to get help from others, like Microsoft and/or Network card vendors.

Not all configurations are dealing with the issue, some has no problems at all.
So always worth to try if it works with your configuration.

When you get for example in your log: winnt_accept: Asynchronous AcceptEx failed.
Then probably you are dealing with the issue.


The SSL issue is caused by the new directive AcceptFilter which replaces the 2.2 one Win32DisableAcceptEx.

1. AcceptFilter https data [default] + mod_ssl works, except when it doesn't - those users who previously in 2.2 had to use DisableWin32AcceptEx.

2. AcceptFilter https none/connect + mod_ssl can fail due to timing sensitive retry problems which cause ssl connections to intermittently fail. How intermittent is a timing side effect of browser and server.

For non SSL traffic the AcceptFilter http none/data/connect works as expected.

Workaround:
To overcome and enjoy the goodies from 2.4: I have a 2.2.22 SSL-only with Reverse Proxy in front of 2.4. A minimal httpd.conf with eg. only mod_ssl, mod_proxyx and logging loaded. And no vhosts. Running already for months here.
Code:
...
...
SSLEngine on
ProxyRequests Off
Win32DisableAcceptEx
EnableSendfile Off
EnableMMAP off
ServerName www.apachelounge.com
DocumentRoot f:/web/unknown
ProxyPreserveHost On
ProxyPass / http://127.0.0.1/
ProxyPassReverse / http://127.0.0.1/
...
...
It feels an advantage in general, it offloads recources from the high non-SSL traffic. Kinda extra multi-threaded.

See also the discussion for more insight: http://www.apachelounge.com/viewtopic.php?t=4461


Last edited by Steffen on Tue 21 Feb '12 13:01; edited 3 times in total
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