X-Forwarded-For

Jack jax at nwmt.us
Wed Aug 29 12:27:55 PDT 2012


Well, fair enough!  I've got most of what's needed complete now, so that's good!


> Jack,
>
> Regular classes are still supported, but implicit classes were a feature of CUPS browsing which is no longer supported.
>
>
> On Aug 29, 2012, at 12:55 PM, Jack <jax at nwmt.us> wrote:
>
> > So, do classes on client machines still work?  Reason I ask is you put it in past tense... so that leaves me wondering.  I've installed CUPS on my load balancer and am in the process of seeing how to setup the classes to accomplish the task of doing whats needed. But if it's a no-go, well, another path will need to be taken :)
> >
> >
> >> This configuration isn't currently supported by CUPS, mainly because you used to be able to use implicit classes with CUPS browsing on the clients to have the clients do their own load balancing...
> >>
> >> On the client machines you can setup classes that point to each server queue, and then the clients will round-robin between the two, preserving the client address and username.
> >>
> >>
> >> On Aug 13, 2012, at 8:01 PM, Jack <jax at nwmt.us> wrote:
> >>
> >>> Say, I'm in a situation where we absolutely need to have the printservers to stay up.  As such, I've put up 2 CUPS servers behind another one running haproxy.  All has been perfect - so far so good.  Now, I'm trying to debug an issue, but my originating host is always the IP of my haproxy machine
> >>>
> >>> So, I never know who actually sent the job.
> >>>
> >>> Now, in the web server world, I can turn on the option to forwardfor and then extract the X-Forwarded-For value out of the http header, and do something with it - mostly just put that into my log file - the actual IP of the client machine.
> >>>
> >>> What I'm interested in knowing - has someone already thought of this and it's pretty easy to accomodate in CUPS?  If so, how?
> >>>
> >>> thanks,
> >>> Jack
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> >>
> >> _________________________________________________________
> >> Michael Sweet, Senior Printing System Engineer, PWG Chair
> >>
> >
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>
> __________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
>





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