If I use the external media server spec to publish an item whose URLs attribute is something like ['http://@ADDRESS@:port/path'], then transcoding of the resource fails.

This definitely used to work in the 0.4.x series (and is documented in http://live.gnome.org/Rygel/MediaServer2Spec), but seems to be broken in the 0.10.x series and also trunk by the look of it.

Using gupnp-universal-cp to browse the container shows both the transcoded resource and the original version with @ADDRESS@ converted to the real IP address.  However, if I try to play the transcoded version, things fail.

Turning on some GStreamer debug spew indicates that the souphttpsrc is having trouble looking up the hostname "ADDRESS@", which seems to indicate that it is working from the original URL rather than the version with the address substituted in.