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

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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.


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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