Re: [SQU] IP precedence/header/TOS bits and delay pools

Just blueskying here, but I think the following would need to be done:

Find out the standard sockets calls to get TOS/IP precedence information
from a TCP link.

enhance the delay pools code to be able to assign a request to a pool
_after_ the upstream connection is made.
Define a new ACL for entering the TOS rules into squid.
then apply that ACL as part of the delay_pools acls.

So can it be done - I think so.
Easily? Shouldn't too hard... but who knows.

Rob

----- Original Message -----
From: "Dave Wilson" <davew@sai.co.za>
To: <squid-users@ircache.net>
Cc: <wayne@sai.co.za>
Sent: Tuesday, November 21, 2000 9:36 PM
Subject: [SQU] IP precedence/header/TOS bits and delay pools

> Hi guys, howzit going ?
>
> We limit all our clients international bandwidth usage based on what
package
> they purchase from us. i.e. a client pays for a limited 32K of
international
> bandwidth but has unlimited Local (South African) bandwidth.
> We limit the clients International bandwidth based on their subnet range
> using a Packeteer Packet shaper.
>
> When we started selling these "Limit international bandwidth" packages we
> had to ditch our transparent Squid proxy, because the proxy would
obviously
> fetch everything on behalf of the client at what ever bandwidth was
> available on our main pipe, and thus the client was not getting limited at
> whatever bandwidth was specified for that clients subnet range.
> Putting our transparent proxy back would be a really great idea as long as
> we can limit the bandwidth which our "bandwidth limited" clients use.
> I have seen that delay pools would be perfect for the task, the problem is
> that we would have to enter in every local IP range to discriminate
between
> local and international websites.
> At the moment our upstream bandwidth provider "colors" or marks the
> TOS/Precedent bit field of all our incoming international traffic, which
our
> packeteer then picks up and utilizes to discriminate between international
> and local traffic.
>
> Is there any way to patch Squid or use some external utility along with
> Squid to recognize TOS/IP precedence fields and make delay pool decisions
on
> it ?
> If this is possible then our transparent proxy will then be implemented
> again. ;-)
> Thanks.
>
>
> Regards
> Dave Wilson
> The S.A. Internet
> (033) 3456777
> 0825496159
> http://www.sai.co.za
> "Who is "General Failure", and what is he doing reading my hard disk ?"
>
>
>
>
>
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>
>

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