[mythtv-users] Upnp, dlna, interval Upnp updates on multicast 239.255.255.250 port 1900

[Greg Oliver]

On Sun, Aug 29, 2010 at 2:24 PM, Ole Rydahl <ole_rydahl at qp12.dk> wrote:
>
>
>> -----Oprindelig meddelelse-----
>> Fra: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-
>
>> > Thanks! I was close to that conclusion too. Any way of decreasing
>> the time
>> > between MythTv-backend sends out Upnp announcements of its
>> presence?
>>
>> AFAIK, UPnP does not do that..  It broadcasts to the multicast
>> address
>> that it is there and clients request the info.  If the clients cache
>> what they get I assume they are breaking some rules - the protocol is
>> not supposed to work that way.  Have you restarted mythtv-backend
>> after you changed the settings?  That setting does not broadcast
>> anything (or it should not) - I assume it just updates it's internal
>> listing so that when requested, new info is then sent out.  I assume
>> it requires a backend restart, but not positive.
>>
> [Ole Rydahl:]
> Thanks! Yes I have restarted and on restart a Upnp announcement is sent out as expected - but refreshed only every 30 minutes. A soon as the client (the TV set) knows about the mythtv backend from the Upnp announcement (multicast) everything (almost!) works like a charm. I think Raymond Wagner is spot on when he points out that the “Upnp Media Update Time” setting is for other purposes then the one I am looking for.
>
> Now, in worst case - after power up of the TV-set - I have to wait for 30 minutes before the TV-set is finally informed of the MythTV backends presence by the Upnp multicast. Routers and Windows running Upnp/dlna seems to do an announcement (multicast) every 10 minutes. I would like to have my MythTV backend do it - say every 5 minutes.
>

Hmmmm, my directTV dvrs display either the removal or addition of the
backend as soon as I stop or start it.  I just enabled upnp and tried
it...  Current listings are available immediately.  Can you try
another upnp server on the same network to see if it may be your tv..
I cannot imagine a server that does not tell the network it is
available as soon as it starts - which is what you are saying is
happening..  And I can definitely say it is not working that way here
- it sounds like the TV is needing the refresh - not the server...