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Apache 2.4.2 Win32 & Win64 available - Updated

 
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admin
Site Admin


Joined: 15 Oct 2005
Posts: 371

PostPosted: Fri 06 Apr '12 15:28    Post subject: Apache 2.4.2 Win32 & Win64 available - Updated Reply with quote

Apache 2.4.2 is available at the download page.

The known issue with SSL (see below) is not solved yet.

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.


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: you can place 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
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Steffen
Moderator


Joined: 15 Oct 2005
Posts: 2123
Location: Hilversum, NL, EU

PostPosted: Mon 13 Aug '12 21:07    Post subject: Reply with quote

A fix for the above SSL issue, see: www.apachelounge.com/viewtopic.php?p=22306
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