From 9d05c619e83fcbdfffaf51780f67e4bd59ee5ab8 Mon Sep 17 00:00:00 2001
From: DrHuangMHT <dr_huang_mht@foxmail.com>
Date: Tue, 14 Mar 2023 01:17:03 +0800
Subject: [PATCH] feat: derive `Clone` for `mdns::Event`

Derive trait `Clone` for `mdns::Event`. This makes cloning its contents without destroying type information possible.



Related #3593.

Pull-Request: #3606.
---
 protocols/mdns/CHANGELOG.md     | 5 +++++
 protocols/mdns/src/behaviour.rs | 4 +++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/protocols/mdns/CHANGELOG.md b/protocols/mdns/CHANGELOG.md
index c2b548e3389..0c3b88c018c 100644
--- a/protocols/mdns/CHANGELOG.md
+++ b/protocols/mdns/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 0.43.1 [unreleased]
+
+- Derive `Clone` for `mdns::Event`. See [PR 3606].
+
+[PR 3606]: https://github.com/libp2p/rust-libp2p/pull/3606
 # 0.43.0
 
 - Update to `libp2p-core` `v0.39.0`.
diff --git a/protocols/mdns/src/behaviour.rs b/protocols/mdns/src/behaviour.rs
index b34a1a73629..f2709e90bdf 100644
--- a/protocols/mdns/src/behaviour.rs
+++ b/protocols/mdns/src/behaviour.rs
@@ -339,7 +339,7 @@ where
 }
 
 /// Event that can be produced by the `Mdns` behaviour.
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub enum Event {
     /// Discovered nodes through mDNS.
     Discovered(DiscoveredAddrsIter),
@@ -352,6 +352,7 @@ pub enum Event {
 }
 
 /// Iterator that produces the list of addresses that have been discovered.
+#[derive(Clone)]
 pub struct DiscoveredAddrsIter {
     inner: smallvec::IntoIter<[(PeerId, Multiaddr); 4]>,
 }
@@ -379,6 +380,7 @@ impl fmt::Debug for DiscoveredAddrsIter {
 }
 
 /// Iterator that produces the list of addresses that have expired.
+#[derive(Clone)]
 pub struct ExpiredAddrsIter {
     inner: smallvec::IntoIter<[(PeerId, Multiaddr); 4]>,
 }