"Socket is not connected (#10057 in Disconnect (closesocket))" error when using SUMo / DUMo

reactos-bootcd-0.4.14-dev-1370-geb1fd0c-x86-gcc-lin-dbg

"Socket is not connected" when SUMo / DUMo starts a "check" operation

err:(dll/win32/msafd/misc/dllmain.c:1976) Async Connect UNIMPLEMENTED!
(dll/win32/kernel32/client/except.c:728) Delphi Exception at address: 004CCB49
(dll/win32/kernel32/client/except.c:729) Exception-Object: 00761C3C
(dll/win32/kernel32/client/except.c:730) Exception text: 75d738
err:(win32ss/user/user32/windows/messagebox.c:1048) MessageBox: L"Socket is not connected (#10057 in Disconnect (closesocket))"

Is the problem on "SUMo side" as the Delphi Exception suggests or does it comes from ROS  as "Async Connect UNIMPLEMENTED" suggests ?