Win: Switch to using winsock 2.x, this will remove support for ancient versions of Windows like 95 and NT 3.5 and older... This allows us to use unix domain sockets with Windows 10 for the sockpipe() macro... (used in my HandyFTP application) When compiled with Visual Studio 2017 5.5 and newer will use unix domain sockets, however this may fail on older Windows 10 versions and older versions of Windows. I am not sure it is worth the effort to dual mode it, when it can just be compiled with an older compiler and function on older versions of Windows if necessary.