I just used cyberlink control point to test UPNP, and
I found that Cyberlink control point did not send SSDP
packet with correct format, in "Universal Plug and Play
Device Architecture", they define an M-Search packet
must have the "Host" field (defined in section 1.2.2),
when I used Cyberlink control point to do the same test,
the M-Search packet it sent does not contain
the "HOST" field, please ref Output_cyberlink.txt, I
check our source code, if we receive an M-Search
packet without HOST field, it will be discarded.
And I have done another test with cyberlink control
point, for example : action, query, subscribe, .... ,I
found it does not send out a packet at all.