Basically, solving #3541 with a different approach - bringing in
the upstream upnpav module, and changing ChildCount from int to a
*int to avoid childCount="0" in the XML output when that value is
simply unknown.
Current approach is leading to some recursion issues and according
to the DLNA spec it shouldn't be necessary, anyway.
Seems to be some corner cases that are not being handled, so taking a different
approach that should be a little more robust.
Also, changing resources to be served under a subpath: We've been serving
media at /res?path=%2Fdir%2Ffilename.mp4; change that to be just /r/dir/filename.mp4.
It's cleaner, easier to reason about, and a necessary first step towards just
serving the resources via httplib anyway.
Allows for filename.srt, filename.en.srt, etc., to be automatically associated with video.mp4 (or whatever) when playing over dlna.
This is the "modern" method, which I've verified to work on VLC and in LG webOS 2. There is a vendor specific mechanism for Samsung that I havn't been able to get working on my F series.
Also made some minor corrections to logging and container IDs.
Mostly trying to get logging to happen through rclone's log methods.
Added request logging, and a trace parameter that will dump the
entire request/response for debugging when dealing with poorly
written clients.
Also added a flag to specify the device's "Friendly Name" explicitly,
and made an attempt at allowing mime types in addition to video.
Again, mostly just copying what I see in other implementations. This
does seem to have done the trick so that I can now pause, fast forward,
rewind, etc., on my Samsung F series.
Brings in icons for devices to display. Based on what some
other open implementations have done, it's worth having a simple
stub implmentation of ConnectionManagerService. Advertise
X_MS_MediaReceiverRegistrar as well, which sounds like it
is necessary for certain MSFT devices (like the X-Box.)
For various reasons, it seems to make sense to move away from generating
the XML with objects. Namespace support is minimal in go, the objects we
have are in an upstream project, and some subtitlties seem likely to
cause problems with poorly written clients.
This removes the empty <iconList></iconList>, but is otherwise the
same output.
The UPnP MediaServer spec says that the ConnectionManager service is
required, and adding it was enough to get dlna support working on my
other TV (LG webOS 2.2.1).
The SCPD URL was being set after marshalling the XML, and thus coming
out blank. Now works on my Samsung TV, and likely fixes some issues
reported by others in #2648.
