UPnP protocol specifics for QoS priority

[Linn_agnostik]

Hi,

I am trying to experiment a little w QoS in my network, as I am forced to use a 5 Ghz wifi bridge to my streamer (old apartment, cannot run cat5). What specific protocol is upnp running between the server and streamer? is it http? or something else?

Have dropouts sometimes when the laptops connect to the 5Ghz band and hog up all resources..

Thanks in advance!