mDNS not compatible with go

[semtexzv]

I have implementation of simple p2p application running in both go and rust. When testing, go can reach go nodes using mDNS, and rust can reach rust nodes, but not accross. It seems that the implementations are incompatible.

Go code:
https://github.com/semtexzv/go-ipcs/blob/master/node/node.go
Rust code:
https://github.com/semtexzv/ipcs/blob/master/node/src/net/mod.rs

[tomaka]

As far as I know, rust-libp2p follows the libp2p specifications, and it's Go and JS which aren't compliant here.

[semtexzv]

Just opened https://github.com/libp2p/specs/blob/master/discovery/mdns.md. Seems you're right

Rust uses the _p2p._udp.local service name, while go uses _ipfs-discovery._udp.local.

[gobengo]

it's Go and JS which aren't compliant here.

It appears that js-libp2p-mdns uses the newest specced _p2p._udp.local as of version 7 in March 2023
https://github.com/libp2p/js-libp2p-mdns/blame/cb8e2aebf46381038f6959a2c7dbd1f10c68a301/src/index.ts#L43