MDNS query

[richardschneider]

Version information:

go-ipfs version: 0.4.13-
Repo version: 6
System version: amd64/windows
Golang version: go1.9.2

Type: Question

Description:

Trying to do a mdns (Multicast DNS) query to go-ipfs with no luck. go-ipfs and the query app are running on the same host. I get no response to the query.

What is the service name? I've tried _ipfs-discovery._udp.local. and _ipfs-discovery._upd.

If I run js-ipfs, it will respond to _ipfs-discovery._udp.

[Stebalien]

It should be _ipfs-discovery._udp. Just to make sure, ipfs config 'Discovery.MDNS.Enabled' returns true?

Actually, what version are you using? 0.4.13 doesn't build on windows, IIRC.

[richardschneider]

• I'm on AMD, so 0.4.13 works. It's only win32 (x86) that it fails on
• Yes, it enabled

[richardschneider]

So it looks like it is broken. See also libp2p/js-libp2p-mdns#67

[richardschneider]

If any one is still interested, the issue is that go is sending a legacy unicast query. Which means that it is not sending the query to port 5353.

I changed my code to send the DNS answer to the specific port of the query and go-ipfs was happy. It connected to my node!

[Stebalien]

Wow. Something else to add to libp2p/go-libp2p#623.