From 5cd5da74c49cae1d8bcead2c2518dc187d31d1ca Mon Sep 17 00:00:00 2001
From: Jacek Sieka <jacek@status.im>
Date: Fri, 7 May 2021 06:31:28 +0200
Subject: [PATCH] Gossipsub unsubscribe fixes (fixes #2540) (#2545)

---
 beacon_chain/networking/eth2_network.nim | 7 +++++--
 vendor/nim-libp2p                        | 2 +-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/beacon_chain/networking/eth2_network.nim b/beacon_chain/networking/eth2_network.nim
index be1b596f1..5b24c1dfb 100644
--- a/beacon_chain/networking/eth2_network.nim
+++ b/beacon_chain/networking/eth2_network.nim
@@ -1633,8 +1633,11 @@ proc shortForm*(id: NetKeyPair): string =
 proc subscribe*(
     node: Eth2Node, topic: string, topicParams: TopicParams,
     enableTopicMetrics: bool = false) {.raises: [Defect, CatchableError].} =
-  proc dummyMsgHandler(topic: string, data: seq[byte]) {.async.} =
-    discard
+  proc dummyMsgHandler(topic: string, data: seq[byte]): Future[void] =
+    # Avoid closure environment with `{.async.}`
+    var res = newFuture[void]("eth2_network.dummyMsgHandler")
+    res.complete()
+    res
 
   let
     topicName = topic & "_snappy"
diff --git a/vendor/nim-libp2p b/vendor/nim-libp2p
index 9f301964e..83a20a992 160000
--- a/vendor/nim-libp2p
+++ b/vendor/nim-libp2p
@@ -1 +1 @@
-Subproject commit 9f301964ed74316de7796c0cbd9728190ac2fdda
+Subproject commit 83a20a992a56ee1207f575e88d906ee62d911d7f