From 33c46dd59d10c04503f9b06426a9af9970351420 Mon Sep 17 00:00:00 2001
From: Ivan Belyakov <ivan.belyakov.job@gmail.com>
Date: Mon, 5 Feb 2024 14:37:56 +0100
Subject: [PATCH] fix(protocol): crash in concurrent map write/read

---
 protocol/transport/envelopes_monitor.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/protocol/transport/envelopes_monitor.go b/protocol/transport/envelopes_monitor.go
index cf164914d..5734f9c37 100644
--- a/protocol/transport/envelopes_monitor.go
+++ b/protocol/transport/envelopes_monitor.go
@@ -123,6 +123,9 @@ func (m *EnvelopesMonitor) Add(identifiers [][]byte, envelopeHashes []types.Hash
 		return errors.New("hashes don't match messages")
 	}
 
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
 	for _, identifier := range identifiers {
 		m.identifierHashes[string(identifier)] = envelopeHashes
 	}