sane-ipp

SANE backend for network scanners that speak IPP Scan (PWG 5100.17). It discovers scanners on the local network via DNS-SD (Avahi) and scans from them, so any SANE frontend (scanimage, xsane, simple-scan) can use them.

Setup

Install the build dependencies (Debian/Ubuntu):

sudo apt install build-essential pkg-config libsane-dev \
    libavahi-client-dev libcups2-dev libpng-dev

Build and install:

make
sudo make install

This installs libsane-ipp.so.1 into the SANE backend directory, enables the backend in /etc/sane.d/dll.d/ipp, and installs /etc/sane.d/ipp.conf.

Check that your scanner is found:

scanimage -L

To use a scanner that discovery can't see, name it directly:

SANE_IPP_DEVICE="MyScanner:ipp://192.168.1.20:631/ipp/scan" scanimage -L

Debugging

• SANE_DEBUG_IPP=1..4 prints messages on stderr (1 errors … 4 full IPP messages).
• Set trace = ~/ipp/trace in the [debug] section of /etc/sane.d/ipp.conf to get a full log per device in ~/ipp/trace/<program>-<device>.log.