UPNP with DirecTV HR-21 Broken

[jeff@…]

The HR-21 seems to communicate fine with MythTV. It lists out all the recordings on the MythTV system just fine, however, when you go to play the video file, the HR-21 claims it cannot access the video files.

If I set the "VideoRoot" directory for MythVideo to be the same as the directory that MythTV records TV shows to, the HR-21 plays the movie files just fine.

Attached is a "tcpdump" output of a failed attempt to play a video file off of MythTV. Also attached is the mythbackend log of the same attempt. Mythbackend is running with "-v upnp" running.

[jeff@…]

tcpdump of failed attempt to play a recording via UPNP.

[jeff@…]

Mythbackend log file of problem with "-v upnp" option active.

[jeff@…]

Patch to fix issue with escaping characters in UPNP responses.

[jeff@…]

I added a patch to fix an issue I found in regards to this problem. I was seeing this quite often in the debugging output from Mythbackend:

2008-06-07 14:35:48.531 HTTPRequest::Encode Input : RecTv/0/item?ChanId=1249&StartTime=2008-04-23T22:00:00 2008-06-07 14:35:48.536 HTTPRequest::Encode Output : RecTv/0/item?ChanId=1249&StartTime=2008-04-23T22:00:00 2008-06-07 14:35:48.622 HTTPRequest::Encode Input : RecTv/1/key=South Park/item?ChanId=1249&StartTime=2008-04-16T22:00:00 2008-06-07 14:35:48.626 HTTPRequest::Encode Output : RecTv/1/key=South Park/item?ChanId=1249&StartTime=2008-04-16T22:00:00 2008-06-07 14:35:48.650 HTTPRequest::Encode Input : RecTv/0/item?ChanId=1249&StartTime=2008-04-16T22:00:00 2008-06-07 14:35:48.654 HTTPRequest::Encode Output : RecTv/0/item?ChanId=1249&StartTime=2008-04-16T22:00:00

It seems like the HTTPRequest::Encode routing is getting called multiple times for the same string, and because of this, the ampersand in the escaped output was getting re-escaped.

This did not entirely fix the DirecTV HR20/21 issue, but at least the receiver is trying to make a connection back to MythTV. It seems to me that problems regarding the DirecTV receiver are due to the fact the the DirecTV HR20/21 will not pass back the HTTP GET variables when it makes the query back to MythTV. With that in mind, it sounds like that is a DirecTV problem.

This patch was made against MythTV 0.21p17416.

[anonymous]

As a side note, MythVideo seems to work fine with the DirecTV HR20/21, but that's because it doesn't seem to need GET variables to query data.

[robertm]

David, any thoughts on this (apparently simple) escaping fix? I am happy to apply and test. (though not in that order ;) )

[robertm]

Thanks for mike dean for pointing out that this is a dupe of #5435. It is, however, still evidently a problem in that by breaking one, you fix the other.

[sphery]

ref [18428], [19122], [19150]

[stuartm]

Still apparently an issue with trunk

[beirdo]

Adding myself as a CC. Maybe I may take a look at this

[beirdo]

Please retest this with current trunk.

[robertm]

No response in 5 weeks