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

[Ole Rydahl]

> -----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.