Re: [squid-users] Another HTTP 1.1 Question

From: Henrik Nordstrom <henrik@dont-contact.us>
Date: Fri, 09 Mar 2007 01:01:41 +0100

tor 2007-03-08 klockan 18:46 -0500 skrev Chris Nighswonger:

> It can. The default page will not load with squid in-line. No errors
> at all in access.log. The browser just hangs. This happens after squid
> forwards an HTTP 1.0 packet. The entire packet exchange dies at this
> point. With squid out of line, the same packe is HTTP 1.1 and the page
> loads right up.

That smells more like a tcp windows issue than an HTTP/1.1 issue..

If on Linux try the following workaround:

echo 0 >/proc/sys/net/ipv4/tcp_window_scaling

this works around quite many broken firewalls not coping well with
window scaling, but significantly scarifies performance over long
distance connections (measured in RTT * bandwidth, not miles)...

For what it's worth I had no problem loading the start page using
Firefox via Squid-2.

Testing.. Ah, yes. There is a broken firewall at this site crashing
window scaling..

http://wiki.squid-cache.org/SquidFaq/SystemWeirdnesses?highlight=%28window%29%7C%28scaling%29#head-699d810035c099c8b4bff21e12bb365438a21027

Someone should contact the site operators explaining the problem to
them..

Regards
Henrik

Received on Thu Mar 08 2007 - 17:01:52 MST

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