Support more than one MRender per host/port combo

[skaze]

Some systems, notably Logitech Squeezebox, uses a client-server model where each Squeezebox device (Radio, Touch, Soft, etc) is a type of thin client and all the functionality is provided through the server. Individual devices are identified by a parameter in the URL, rather than their specific IPs.

This is best reflected by the log messages from the MediaRender Connect SmartApp - here you can see 6 different MRenders found via UPNP however 5 have the same host/port (192.168.1.2:9000) (note i may have had to make changes to the code to get this output but it was hack and I think I've broken other assumptions in the code used to identify/index players from internal maps/lists):

f947bcaf-e0cf-407d-bb35-0f6fe87c49ba 13:26:15: trace verifyMediaRenderer(C0A80102:2328, /plugins/UPnP/MediaRenderer.xml?player=00%3A04%3A20%3A2a%3A97%3A65, 192.168.1.2:9000)
f947bcaf-e0cf-407d-bb35-0f6fe87c49ba 13:26:15: trace verifyMediaRenderer(C0A80102:2328, /plugins/UPnP/MediaRenderer.xml?player=00%3A04%3A20%3A26%3A55%3Ac9, 192.168.1.2:9000)
f947bcaf-e0cf-407d-bb35-0f6fe87c49ba 13:26:15: trace verifyMediaRenderer(C0A80102:2328, /plugins/UPnP/MediaRenderer.xml?player=01%3A79%3Aca%3Af7%3A57%3Ad1, 192.168.1.2:9000)
f947bcaf-e0cf-407d-bb35-0f6fe87c49ba 13:26:15: trace verifyMediaRenderer(C0A80102:2328, /plugins/UPnP/MediaRenderer.xml?player=00%3A04%3A20%3A29%3Ab0%3A3e, 192.168.1.2:9000)
f947bcaf-e0cf-407d-bb35-0f6fe87c49ba 13:26:15: trace verifyMediaRenderer(C0A80102:2328, /plugins/UPnP/MediaRenderer.xml?player=b8%3A27%3Aeb%3A51%3Af6%3Afa, 192.168.1.2:9000)
f947bcaf-e0cf-407d-bb35-0f6fe87c49ba 13:26:15: trace verifyMediaRenderer(C0A8011D:1F90, /description.xml, 192.168.1.29:8080)

The assumption made in the code that a player (MRender) is uniquely identified by a host and port is thus incorrect.