From 4f5677cda9b3cfb593ff28739714829b5888bd51 Mon Sep 17 00:00:00 2001
From: Adam Sitnik <adam.sitnik@gmail.com>
Date: Fri, 3 Jul 2020 19:15:45 +0200
Subject: [PATCH] Offset edge case bug fix

---
 .../src/System/Net/Sockets/SocketAsyncContext.Unix.cs           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs b/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs
index 2a5c3c3587d8d1..c145c7471dce0e 100644
--- a/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs
+++ b/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs
@@ -430,7 +430,7 @@ public BufferPtrSendOperation(SocketAsyncContext context) : base(context) { }
             protected override bool DoTryComplete(SocketAsyncContext context)
             {
                 int bufferIndex = 0;
-                return SocketPal.TryCompleteSendTo(context._socket, new ReadOnlySpan<byte>(BufferPtr, Offset + Count), null, ref bufferIndex, ref Offset, ref Count, Flags, SocketAddress, SocketAddressLen, ref BytesTransferred, out ErrorCode);
+                return SocketPal.TryCompleteSendTo(context._socket, new ReadOnlySpan<byte>(BufferPtr + Offset, Count), null, ref bufferIndex, ref Offset, ref Count, Flags, SocketAddress, SocketAddressLen, ref BytesTransferred, out ErrorCode);
             }
         }