Re: PHP download page blocking other HTTP requests

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On 6 June 2011 13:55, Pete Ford <pete@xxxxxxxxxxxxx> wrote:
> Is there something on the Apache/PHP end that might be causing this
> blocking? (Apache 2.2.10, PHP 5.2.14)

The browser and / or OS may be obeying the settings about the number
of simultaneous connections per host.
http://support.microsoft.com/kb/183110 /
http://www.ietf.org/rfc/rfc2616.txt 8.1.4 Practical Considerations ...

"   Clients that use persistent connections SHOULD limit the number of
   simultaneous connections that they maintain to a given server. A
   single-user client SHOULD NOT maintain more than 2 connections with
   any server or proxy. A proxy SHOULD use up to 2*N connections to
   another server or proxy, where N is the number of simultaneously
   active users. These guidelines are intended to improve HTTP response
   times and avoid congestion."

Also, (from googling)
http://forums.serverbeach.com/showthread.php?6192-Max-Concurrent-Connections-Per-Host,
mod_throttle and/or mod_bandwidth may be capable of restricting the
number and/or speed of connections.

-- 
Richard Quadling
Twitter : EE : Zend : PHPDoc
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY : bit.ly/lFnVea

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