From af04cc956da0d54a7995c67107f6de2b255f5264 Mon Sep 17 00:00:00 2001
From: Joachim Bauch <bauch@struktur.de>
Date: Tue, 5 Jan 2021 09:09:11 +0100
Subject: [PATCH] Add missing lock when accessing internal sessions map.

---
 src/signaling/room.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/signaling/room.go b/src/signaling/room.go
index ea170e2..ee47650 100644
--- a/src/signaling/room.go
+++ b/src/signaling/room.go
@@ -701,6 +701,9 @@ func (r *Room) notifyInternalRoomDeleted() {
 			Type:   "delete",
 		},
 	}
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
 	for s := range r.internalSessions {
 		s.(*ClientSession).SendMessage(msg)
 	}