From 0029b8f0539f181ce0dad0f24b4387ca188d1d08 Mon Sep 17 00:00:00 2001
From: Ben Adams <thundercat@illyriad.co.uk>
Date: Wed, 14 Nov 2018 20:05:26 +0000
Subject: [PATCH] Use non-pinnable buffer for zero byte read (#3094)

---
 src/Kestrel.Transport.Sockets/Internal/SocketReceiver.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Kestrel.Transport.Sockets/Internal/SocketReceiver.cs b/src/Kestrel.Transport.Sockets/Internal/SocketReceiver.cs
index 5d33f49829..42557a8802 100644
--- a/src/Kestrel.Transport.Sockets/Internal/SocketReceiver.cs
+++ b/src/Kestrel.Transport.Sockets/Internal/SocketReceiver.cs
@@ -15,7 +15,11 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.Internal
 
         public SocketAwaitableEventArgs WaitForDataAsync()
         {
+#if NETCOREAPP2_1
+            _awaitableEventArgs.SetBuffer(Memory<byte>.Empty);
+#else
             _awaitableEventArgs.SetBuffer(Array.Empty<byte>(), 0, 0);
+#endif
 
             if (!_socket.ReceiveAsync(_awaitableEventArgs))
             {