Re: [squid-users] How to mark sertain objects in the cache ?

The first question to address is how to read the ToS/DS value on the
received traffic.

I know how to set the ToS/DS value on traffic generated by Squid, but
have yet to find a method where UNIX applications can read the ToS/DS
value of received TCP/IP traffic (I know how to do so for UDP/IP
traffic, but the same method does not work for TCP/IP).

Once that is done, forwarding the ToS/DS value on cache misses is not
very hard, and it should not be much of a problem to add this to the
object metadata either for future cache hits..

Regards
Henrik

Delian Krustev wrote:
>
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> Is it possible to mark certain objects in the cache and take some action
> accordingly when serving the cached object later ?
>
> What I actually need is the following:
> I'm shaped differently for international and local (in-coutry) traffic - more
> bandwidth is allocated for the local one.
> My ISP delivers the international packets marked by TOS.
> I'm want to shape my clients' international and local traffic differenly too -
> give them more bandwith for local traffic.
> I can easily do this if squid is not running - I just use the TOS my ISP
> was gentle enough to set.
> But when traffic goes trough squid the TOS is lost.
> What I want to do is to mark the cached objects when they are written to the
> cache and later when taking the objects from the cache mark the IP packets
> with TOS again. Object which just pass trough squid (not cached) should also
> be marked.
>
> Any ideas how this could be achieved ?
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Received on Tue Feb 11 2003 - 20:43:48 MST