feat(kad): implement common traits on RoutingUpdate

A few weeks ago when I was debugging my wrong setup with kademlia, I could not conveniently debug `RoutingUpdate` after adding an address to the DHT. It would be nice to have a few derivable traits on a public enum.

Pull-Request: #4270.

Cargo.toml

@@ -73,7 +73,7 @@ libp2p-floodsub = { version = "0.43.0", path = "protocols/floodsub" }
 libp2p-gossipsub = { version = "0.45.0", path = "protocols/gossipsub" }
 libp2p-identify = { version = "0.43.0", path = "protocols/identify" }
 libp2p-identity = { version = "0.2.2" }
-libp2p-kad = { version = "0.44.3", path = "protocols/kad" }
+libp2p-kad = { version = "0.44.4", path = "protocols/kad" }
 libp2p-mdns = { version = "0.44.0", path = "protocols/mdns" }
 libp2p-metrics = { version = "0.13.1", path = "misc/metrics" }
 libp2p-mplex = { version = "0.40.0", path = "muxers/mplex" }

protocols/kad/CHANGELOG.md

@@ -1,4 +1,11 @@
-## 0.44.3 - unreleased
+## 0.44.4 - unreleased
+
+- Implement common traits on `RoutingUpdate`.
+  See [PR 4270].
+
+[PR 4270]: https://github.com/libp2p/rust-libp2p/pull/4270
+
+## 0.44.3
 
 - Prevent simultaneous dials to peers.
   See [PR 4224].

protocols/kad/Cargo.toml

@@ -3,7 +3,7 @@ name = "libp2p-kad"
 edition = "2021"
 rust-version = "1.65.0"
 description = "Kademlia protocol for libp2p"
-version = "0.44.3"
+version = "0.44.4"
 authors = ["Parity Technologies <[email protected]>"]
 license = "MIT"
 repository = "https://github.com/libp2p/rust-libp2p"

protocols/kad/src/behaviour.rs

@@ -3289,6 +3289,7 @@ impl fmt::Display for NoKnownPeers {
 impl std::error::Error for NoKnownPeers {}
 
 /// The possible outcomes of [`Kademlia::add_address`].
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum RoutingUpdate {
     /// The given peer and address has been added to the routing
     /// table.