protocols/kad: Remove deprecated set_protocol_name()

protocols/kad/CHANGELOG.md

@@ -1,4 +1,11 @@
-# 0.40.0 [unreleased]
+# 0.41.0 [unreleased]
+
+- Remove deprecated `set_protocol_name()` from `KademliaConfig` & `KademliaProtocolConfig`.
+  Use `set_protocol_names()` instead. See [PR 2866].
+
+[PR 2866]: https://github.com/libp2p/rust-libp2p/pull/2866
+
+# 0.40.0
 
 - Add support for multiple protocol names. Update `Kademlia`, `KademliaConfig`,
   and `KademliaProtocolConfig` accordingly. See [Issue 2837]. See [PR 2846].

protocols/kad/src/behaviour.rs

@@ -228,16 +228,6 @@ impl KademliaConfig {
         self
     }
 
-    /// Sets a custom protocol name.
-    ///
-    /// Kademlia nodes only communicate with other nodes using the same protocol
-    /// name. Using a custom name therefore allows to segregate the DHT from
-    /// others, if that is desired.
-    #[deprecated(since = "0.40.0", note = "use `set_protocol_names()` instead")]
-    pub fn set_protocol_name(&mut self, name: impl Into<Cow<'static, [u8]>>) -> &mut Self {
-        self.set_protocol_names(std::iter::once(name.into()).collect())
-    }
-
     /// Sets the timeout for a single query.
     ///
     /// > **Note**: A single query usually comprises at least as many requests

protocols/kad/src/protocol.rs

@@ -159,13 +159,6 @@ impl KademliaProtocolConfig {
         self.protocol_names = names;
     }
 
-    /// Sets single protocol name used on the wire. Can be used to create incompatibilities
-    /// between networks on purpose.
-    #[deprecated(since = "0.40.0", note = "use `set_protocol_names()` instead")]
-    pub fn set_protocol_name(&mut self, name: impl Into<Cow<'static, [u8]>>) {
-        self.set_protocol_names(std::iter::once(name.into()).collect());
-    }
-
     /// Modifies the maximum allowed size of a single Kademlia packet.
     pub fn set_max_packet_size(&mut self, size: usize) {
         self.max_packet_size = size;