From 2c7f81292f448ea0a49932acb3cab3be6a899222 Mon Sep 17 00:00:00 2001
From: Richard Schneider <makaretu@gmail.com>
Date: Thu, 25 Apr 2019 10:41:25 +1200
Subject: [PATCH] fix(MulticastService): shutdown race condition #55

---
 src/MulticastService.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/MulticastService.cs b/src/MulticastService.cs
index 7b10ecf..5d48fc3 100644
--- a/src/MulticastService.cs
+++ b/src/MulticastService.cs
@@ -487,7 +487,7 @@ void Send(Message msg, bool checkDuplicate)
                 return;
             }
 
-            client.SendAsync(packet).GetAwaiter().GetResult();
+            client?.SendAsync(packet).GetAwaiter().GetResult();
         }
 
         /// <summary>