# Functions
Search searches services by SSDP.
SetMulticastRecvAddrIPv4 updates multicast address where to receive packets.
SetMulticastSendAddrIPv4 updates a UDP address to send multicast packets.
# Constants
All is a search type to search all services and devices.
RootDevice is a search type to search UPnP root devices.
# Variables
Interfaces specify target interfaces to multicast.