Querying does not work for cases when advertising is delegated to another host. about mdns HOT 5 CLOSED

Looked into this. This does not work because when we listen to DefaultAddress = "224.0.0.0:5353", we will only ever get multicast responses back. In order to address this, we need to have Query begin using a unicast socket for queries. This will be more efficient and correct. When we do this, the client side is okay to listen on "0.0.0.0:0", since there does not need to be a dedicated way to listen for questions, just answers. This way, we are allowed to receive answers both from our joined multicast groups and unicast.

So, this will be fixed with #155 which comes behind #69

from mdns.

If you apply #70 does it work?

Most of my attention is on https://github.com/pion/webrtc, but will try my best to get this working!

from mdns.

No, #70 does not fix it. I checked and the code returns here conn.go#L297 For some reason it sees it as empty response. Which it is not.

Debugging the code: err == "parsing/packing of this section has completed" in that if statement. But no error is returned back and no response is captured.

Running tcpdump I do see:

21:29:07.409061 enp2s0f0 M   IP 10.0.0.185.5353 > 224.0.0.251.5353: 0 A (QM)? test.local. (31)
21:29:07.409408 enp2s0f0 Out IP 10.0.0.3.5353 > 10.0.0.185.5353: 0- [0q] 1/0/0 A 10.0.1.0 (41)

So the question is sent and answer is sent back.

from mdns.

@akamensky if you're still interested, can you check if this is still an issue?

from mdns.

Verified #176 fixes this but need a review

from mdns.