thread 'main' panicked at libp2p-relay-0.17.2/src/priv_client/transport.rs:237

[lynic]

Summary

I'm trying to write a libp2p client and let it create to a relay server, I enabled dcutr and relay and gossibsub and kad.

Somehow it panicked, would like to request help to debug it.

Expected behavior

not panic

Actual behavior

panic

Relevant log output

Told relay its public address
Relay told us our observed address /ip4/219.78.226.76/tcp/46840
dialed to relay server
start listening on relay address /dns/vps5.xxxxxx.net/tcp/8443/p2p/12D3KooWHThNsD8z3ahmG5ihYbz3zSYtUHqLY1YiChTrZFVFZpjd/p2p-circuit
...
event: NewExternalAddrCandidate { address: "/ip4/219.78.226.76/tcp/42717" }
thread 'main' panicked at /home/vagrant/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libp2p-relay-0.17.2/src/priv_client/transport.rs:237:44:
internal error: entered unreachable code: Receiver is never dropped.
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

### Possible Solution

_No response_

### Version

_No response_

### Would you like to work on fixing this bug ?

No

[jxs]

Hi, and thanks for the interest, do you have a reproducible case for aforementioned panic?

[lynic]

I'm not sure if it's related to using tokio in relay server, as in example it's using async_std.
Have anyone use tokio for relay server?

[dariusc93]

Could you provide any code that you may be using for your relay server? I dont have an issue with the example or my own code so just curious is all. It shouldnt matter if youre using async-std or tokio though