Re: Driverless scanning for WSD and ESCL supported scanners is coming

[Zdenek Dohnal]

On 8/6/20 4:37 PM, Robert Marcano via devel wrote:
>  On 8/6/20 3:48 AM, Zdenek Dohnal wrote:
> > On 8/5/20 2:30 PM, Jiří Eischmann wrote:
> >>
> >>   Will it be possible to use a Fedora machine as a server, so that I
> >> can
> >> have an old scanner connected to it via USB and then shared with other
> >> devices on the local network via those protocols?
> >> That would be neat.
> >>
> >> Jiri
> >
> > Hi Jirka,
> >
> > IIRC it is possible even now via saned on the server, but saned doesn't
> > use WSD or ESCL, just simple TCP transfer between client and server.
> >
> > In practice it looks like - you have a proprietary or sane-backends
> > supported USB scanner (sane-airscan doesn't work for USB devices), you
> > set up ACL on saned and setup clients to connect to the server.
>
>  From the README, it looks like some manufacturers allow eSCL to work
>  over USB too:
>
>    However, most (all?) of the eSCL devices will also work over USB, if
>    IPP-over-USB daemon is installed on your computer
>
>  and some are even USB only:
>
>    [2]: this device is USB-only, but it works well with the IPP-over-USB
>    daemon.
>
>  I hope this becomes a trend for non networked scanners too. 
I had a suspicion ipp-over-usb daemon like ipp-usb or ippusbxd could
help, but I wasn't sure (it was created for supporting USB printer
devices), so didn't want to spread any mystification.

ipp-over-usb daemons - ipp-usb and ippusbxd - are on my list what to
package, they will come into Fedora this year (I hope).

> >
> > sane-airscan is a backend for communication with scanner supporting
> > WSD/ESCL, it doesn't use those protocols for sharing the device.
> >
> > Zdenek
> >
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-- 
Zdenek Dohnal
Software Engineer
Red Hat Czech - Brno TPB-C