Re: httpd_accel_uses_host_header

From: Henrik Nordstrom <>
Date: Fri, 09 May 1997 00:23:18 +0200

It might be a bit tricky to add without a bit of rewriting how the
virtual host support is done. Squid can be seena as a big state machine,
and state changes can't be done in all places... and a DNS lookup
requires a state change.

But yes, it should be done. But until then use ACL lists.

Packets should never be received by another interface (unless either
your DNS or TCP/IP is totally messed up). If this could happen then
virtual interfaces would not be very useful...

Henrik Nordström
Graham Toal wrote:
> However, a lower-level check is also cheap to add, and
> doesn't require keeping large ACL lists:
>  if virtual_host and Host: header
>  AND Host: header IP resolves to virtual_host IP (CNAME or A record)
>    use Host: header
>  elsif virtual
>    use IP addr
>  else
>    use accel prefix
> What I'm not sure about is if the packet was received on an IP
> interface that was not one of the IP aliases which the virtual
> host CNAME points to!  (Confusing, eh?)  Will this happen
> often enough to be worth the extra checks?
Received on Thu May 08 1997 - 15:32:41 MDT

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