keep memory of all UPnP devices that announced themselves

 MiniSSDPd is a small daemon used by MiniUPnPc (a UPnP control point for IGD
 devices) to speed up device discoveries. MiniSSDPd keep memory of all UPnP
 devices that announced themselves on the network through SSDP NOTIFY packets.
 MiniSSDPd also has the ability to handle all SSDP traffic received on a
 computer via the multicast group 239.255.255.250:1900.
 .
 MiniSSDPd receive NOTIFY packets and store information contained for later
 use by UPnP Control Points on the machine. MiniSSDPd receive M-SEARCH packets
 and answer on behalf of the UPnP devices running on the machine. MiniUPnPd and
 MiniUPnPc are designed to take automatically advantage of MiniSSDPd running on
 the same computer. Juste make sure that MiniSSDPd is started before any other
 UPnP program on the computer.