BubbleUPnP and Pause/Next track

[simoncn]

I've been studying what the DLNA spec says about this. A DLNA-compliant renderer that uses the connection stalling method of pausing is required to check that the Connection Stalling flag is set in DLNA.ORG_FLAGS in the fourth field of protocolInfo. This applies to non-DLNA media profiles (such as FLAC) as well as to DLNA media profiles.

This implies that a server that wants to allow a DLNA-compliant renderer to do pausing by connection stalling must set the Connection Stalling flag in DLNA.ORG_FLAGS in the fourth field of protocolInfo. The next release of MinimServer will set this flag for streams that support pausing by connection stalling.

Some streams can't support pausing by connection stalling. An example of this is a live radio stream that is being relayed by the server. For such streams, MinimServer will not set the Connection Stalling flag. If the server were to set this flag for such a stream, the renderer might attempt to use connection stalling to pause the stream, which would fail.

Similarly, if a control point sets the Connection Stalling flag without knowing whether or not the server can support connection stalling for that stream, this could problems if the renderer attempts to use connection stalling to pause the stream.