Appendix C. Windows Internet Libraries

  • WinHTTP vs. WinInet 967

  • Autoproxy (WPAD) 968

  • Applications That Use WinHTTP 972

  • Summary 972

All of the proxy automatic detection in this book and in most of the online content deals with the context of browsers. This appendix will discuss automatic detection in the context of non-browser applications; specifically those that use WinHTTP as their HTTP library.

WinHTTP vs. WinInet

Windows provides two different HTTP libraries: WinInet and WinHTTP. At one time, WinHTTP was intended to replace WinInet, but because so many Web applications had dependencies on WinInet, it has remained.

WinInet and WinHTTP both serve similar purposes: they provide an API designed to simplify the task of writing applications that need to ...

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