philippe44
Removing renderer
Hi there
first off thanks a lot for your work. Could you please help me understand why this is happening?
Jan 03 08:01:05 airconnect aircast-linux-x86_64-static[127]: [08:01:05.955] AddCastDevice:650 [0x192ce20]: creating MAC Jan 03 08:01:05 airconnect aircast-linux-x86_64-static[127]: [08:01:05.955] AddCastDevice:664 [0x192ce20]: adding renderer (Cast Audio - 192.168.6.83:8009) with mac CCCC3C2E14D0 Jan 03 08:02:34 airconnect aircast-linux-x86_64-static[127]: [08:02:34.477] AddCastDevice:650 [0x192d7b8]: creating MAC Jan 03 08:02:34 airconnect aircast-linux-x86_64-static[127]: [08:02:34.479] AddCastDevice:664 [0x192d7b8]: adding renderer (Cast Letto - 192.168.5.85:8009) with mac CCCC85B97153 Jan 03 08:17:40 airconnect aircast-linux-x86_64-static[127]: [08:17:40.131] UpdateDevices:397 [0x192ce20]: removing renderer (Cast Audio+) -536835552 Jan 03 08:17:40 airconnect aircast-linux-x86_64-static[127]: [08:17:40.161] DeleteCastDevice:379 [0x192ce20]: Cast device stopped
it looks like that particular device (an "old" Google Cast Audio) is getting removed for apparently no reason. If I restart the service it then works fine again. Any hints about what could be causing this?
Devices get removed because they stop updating their mDNS record. They have to but there is a feature in networking named IGMP snooping that is supposed to help reducing traffic and is quite often a mess.
The idea is that when you are interested in listening to a multicast group, you subscribe and then routers will direct such multicast to your port/branch of network, otherwise they will filter out such traffic. IGMP snooping allows that for simple switch, there are many good explanation on the internet https://www.cloudflare.com/learning/network-layer/what-is-igmp/.
Well, the problem is that IGMP snooping does seem to not work on many switches and they end up blocking traffic and so I don't see them after a while and remove them. Which version do you use? In 1.6.2 I've added an extra feature that pings a missing player "to be sure"
Hello and thanks a lot for your reply and explanations. I run the 1.6.0, I'll update it and see what happens then.
Hi
it looks like the issue isn't gone:
In the meanwhile, I noticed that I do not have the IMGP snooping enabled on all my network devices (I have a "non standard" network config with 1 router, 1 access point and 1 switch), could this be the issue as well? Or at least part of it?
Yes, it's very probably part of it, the fact that one of your equipment is dropping multicast frames. I think 1.6.1 and above should solve that issue
Ok I'll make sure to have that option enabled on all my network equipment and see what happens