From 39c8537e2007171f1ff52c34ed212b004daf72cc Mon Sep 17 00:00:00 2001
From: Joachim Henze <Joachim.Henze@reactos.org>
Date: Wed, 13 May 2020 02:39:37 +0200
Subject: [PATCH] [0.4.14][MSAFD] Workaround regression CORE-15804

To fix 'MSTSC fails to connect with error "ERROR: Bad packet header"'
which regressed by 0.4.12-dev-752-g
6bc61f63f1e0ad20ab09f881d6968558eba9a8e6

In 0.4.12 and 0.4.13 releases I totally reverted
Pierre Schweitzer's work instead.

Thanks to Doug Lyons, author of this new workaround,
we can keep Pierre's work.
We think MSAFD is a better place to workaround than
our MSTSC binary, because our MSTSC runs fine on
W2K3SP2.

fix cherry picked from commit 0.4.15-dev-211-g
666fe66fe97d3d0f602fd30d5f3987f980f2c934
---
 dll/win32/msafd/misc/dllmain.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dll/win32/msafd/misc/dllmain.c b/dll/win32/msafd/misc/dllmain.c
index 4f8e76c10a3..52d71e702fe 100644
--- a/dll/win32/msafd/misc/dllmain.c
+++ b/dll/win32/msafd/misc/dllmain.c
@@ -2890,6 +2890,10 @@ WSPSetSockOpt(
                   return SOCKET_ERROR;
               }
 
+              /* FIXME: We should not have to limit the packet receive buffer size like this. workaround for CORE-15804 */
+              if (*(PULONG)optval > 0x2000)
+                  *(PULONG)optval = 0x2000;
+
               SetSocketInformation(Socket,
                                    AFD_INFO_RECEIVE_WINDOW_SIZE,
                                    NULL,