PasTim wrote: 
> I'm going to put this project to one side for a few days at least.  It
> now seems that some of my UPnP renderers need this check for random 5
> digits port numbers to be discovered, and some don't.  
> 
> I was trying to see if I could further qualify the devices that respond
> to the multicast to 239.255.255.250 by adding a "-s"  (or possibly a "-m
> iprange") clause, and found that two out of my 3 UPnP renderers were
> found even without the INPUT clause at all.  I am slightly unsure
> whether the -s clause works - the device that seems to need the INPUT
> clause seems to be somewhat temperamental in being discovered.
> 
> As it stands all 3 of my devices work at the moment.  If I recall
> correctly you are using a mobile.  I have an LMS player on my mobile, so
> don't need UPnP for it. However, it might be useful for me to have
> another player to test.  What renderer are you using?

I do not understand how your server can accept responses from your UPnP
renderers unless some INPUT rule is present that allows this to happen,
or the firewall has been disabled altogether? I use *sudo iptables -S*
to get a list of the rules that are currently in force. I found
sometimes my phone was temperamental in being discovered too, and
increasing the timeout parameter when creating the ipset upnp, seemed to
help with that. I will play with the "-s" option that you mentioned, but
it should work. Additionally, although this might not be all that
helpful, I think I found a simple way to limit the number of SSDP
M-Search broadcasts that go out periodically to just 1 each time; I
added this rule at the end of the rest of the setup:
SUDO IPTABLES -I OUTPUT 4 -D 239.255.255.250/32 -P UDP -M SET
--MATCH-SET UPNP SRC,SRC -J DROP
Since it is also #4, it will be placed BEFORE the previous #4 rule, and
it does have to go prior, to drop the packet in time.



*Living Room:* SB Touch + DIY PSU > CI Audio VDA.2 DAC + VAC.1 PSU >
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------------------------------------------------------------------------
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View this thread: http://forums.slimdevices.com/showthread.php?t=103728

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