https://git.reactos.org/?p=reactos.git;a=commitdiff;h=666fe66fe97d3d0f602fd30d5f3987f980f2c934

commit 666fe66fe97d3d0f602fd30d5f3987f980f2c934
Author:     Joachim Henze <[email protected]>
AuthorDate: Wed May 13 02:39:37 2020 +0200
Commit:     Joachim Henze <[email protected]>
CommitDate: Wed May 13 02:39:37 2020 +0200

    [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.
    
    I will backport this new workaround also into 0.4.14RC.
---
 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,

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