Install libgssdp-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libgssdp-doc
Description:
GObject-based library for SSDP (documentation)
A GObject-based API for doing SSDP (Simple Service Discovery Protocol) transparently. . This package contains the documentation.
Homepage: https://wiki.gnome.org/Projects/GUPnP
Version: 1.0.2-2
Section: universe/doc