* MiniSSDPd - SSDP daemon
(c) Thomas Bernard
http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
https://github.com/miniupnp/miniupnp/
MiniSSDPd is a daemon that :
1 - keeps track of all UPnP devices announcing themselves on the network.
its database can be queried by local processes using a protocol based on
a unix socket. That enables local processes to quickly discover UPnP devices
without broadcasting SSDP message and waiting several seconds for a response.
2 - keeps a database of local UPnP devices hosted on the machine and
answering SSDP searchs on their behalf. It enables to run several UPnP devices,
like an IGD and a MediaServer, on the same machine.
to build, use GNU Make.
* protocol :
Connect to the unix socket.
Sent request, get response.
close unix socket connection.
* Request format :
1st byte : request type
1 - type
2 - USN (unique id)
3 - everything
4 - submit service (see below)
n bytes : string length : 1 byte if < 128 else the upper bit indicate that
one additional byte should be read, etc. (see codelength.h)
n bytes = string
Response format :
1st byte : number of services/devices
For each service/device :
URL :
n bytes string length
n bytes = Location string
ST:
n bytes string length
n bytes = type string
USN:
n bytes string length
n bytes = identifier string
request type 4 = submit service
1st byte = 4
(k,n) bytes : length and string "ST" (service type)
(k,n) bytes : length and string "USN"
(k,n) bytes : length and string "Server"
(k,n) bytes : length and string "Location"
No answer
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