From 47b9aca324ca490f7f25ca4e5a2856b31068a698 Mon Sep 17 00:00:00 2001
From: Rohan Singh <rohan-singh@hotmail.com>
Date: Thu, 14 Jan 2021 12:58:59 -0500
Subject: [PATCH] Crash fix in ConnectionManager.Receive due to bad pointer

---
 Facepunch.Steamworks/Networking/ConnectionManager.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Facepunch.Steamworks/Networking/ConnectionManager.cs b/Facepunch.Steamworks/Networking/ConnectionManager.cs
index af4bc3c..ce32b72 100644
--- a/Facepunch.Steamworks/Networking/ConnectionManager.cs
+++ b/Facepunch.Steamworks/Networking/ConnectionManager.cs
@@ -110,14 +110,14 @@ namespace Steamworks
 
 		public unsafe int Receive( int bufferSize = 32, bool receiveToEnd = true )
         {
-            if ( bufferSize > 256 ) throw new ArgumentOutOfRangeException( nameof( bufferSize ) );
+            if ( bufferSize < 1 || bufferSize > 256 ) throw new ArgumentOutOfRangeException( nameof( bufferSize ) );
 
 			int totalProcessed = 0;
             NetMsg** messageBuffer = stackalloc NetMsg*[bufferSize];
 			
 			while ( true )
             {
-				int processed = SteamNetworkingSockets.Internal.ReceiveMessagesOnConnection( Connection, new IntPtr( &messageBuffer ), bufferSize );
+				int processed = SteamNetworkingSockets.Internal.ReceiveMessagesOnConnection( Connection, new IntPtr( &messageBuffer[0] ), bufferSize );
                 totalProcessed += processed;
 
 			    for ( int i = 0; i < processed; i++ )