transports/noise: fix compilation

[Milerius]

For crate that depends on generic-array = { version = "0.14.3", features = ["serde", "more_lengths"] } It's seems that as_ref() is ambiguous.

more-lengths features seem to create this problem.

error[E0282]: type annotations needed
   --> /home/azureagent/.cargo/git/checkouts/rust-libp2p-98135dbcf5b63918/20183c1/transports/noise/src/protocol/x25519.rs:221:45
    |
221 |         curve25519_sk.copy_from_slice(&hash.as_ref()[..32]);
    |                                        -----^^^^^^--
    |                                        |    |
    |                                        |    cannot infer type for type parameter `T` declared on the trait `AsRef`
    |                                        this method call resolves to `&T`
    |
    = note: type must be known at this point

[mxinden]

Thanks @Milerius. Appreciate the patch.

In case you would need a backport of this change, please see #2231 (comment).

[Milerius]

Thanks @Milerius. Appreciate the patch.

In case you would need a backport of this change, please see #2231 (comment).

It would be lovely. It seems that our project doesn't compile anymore if I use this last commit - a bit new into rust/cargo. Could you please tell me a bit more about how to achieve that?

Personally we use: 0.32.0

[mxinden]

Personally we use: 0.32.0

Double checking here: You are referring to tag libp2p-noise-0.32.0 (libp2p-noise crate version v0.32.0 respectively), correct?

[Milerius]

Personally we use: 0.32.0

Double checking here: You are referring to tag libp2p-noise-0.32.0 (libp2p-noise crate version v0.32.0 respectively), correct?

no sorry, I'm referring to this commit: 20183c1

But otherwise I would love to have some inputs on the upgrade regarding:

error[E0277]: the trait bound `GossipsubEvent: ProtocolsHandler` is not satisfied
  --> mm2src/gossipsub/src/behaviour.rs:49:13
   |
49 |     events: VecDeque<NetworkBehaviourAction<Arc<GossipsubRpc>, GossipsubEvent>>,
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `ProtocolsHandler` is not implemented for `GossipsubEvent`
   |
   = note: required because of the requirements on the impl of `IntoProtocolsHandler` for `GossipsubEvent`

I've read https://github.com/libp2p/rust-libp2p/pull/2191/files#r692527903 but since I'm new to libp2p and rust I've some struggling understanding the update path ^^' From what I understand NetworkBehaviourAction doesn't take an event as second parameter but an handler - a bit lost ^^'

[mxinden]

May I ask why you are not running on a released version of rust-libp2p but 20183c1 instead?

In regards to your compile time errors, you would need to adjust the trait parameters of NetworkBehaviourAction like done here:

rust-libp2p/protocols/gossipsub/src/behaviour.rs

Lines 197 to 198 in 937b59d

	type GossipsubNetworkBehaviourAction =
	NetworkBehaviourAction<GossipsubEvent, GossipsubHandler, Arc<GossipsubHandlerIn>>;

[Milerius]

May I ask why you are not running on a released version of rust-libp2p but 20183c1 instead?

In regards to your compile time errors, you would need to adjust the trait parameters of NetworkBehaviourAction like done here:

rust-libp2p/protocols/gossipsub/src/behaviour.rs

Lines 197 to 198 in 937b59d

	type GossipsubNetworkBehaviourAction =
	NetworkBehaviourAction<GossipsubEvent, GossipsubHandler, Arc<GossipsubHandlerIn>>;

Thanks - then I will update directly to last libp2p -thanks for the input

[mxinden]

@Milerius be aware of #2242 though. It will be fixed via #2248.