The WinHttpRequestOption enumeration includes options that can be set or retrieved for the current Microsoft Windows HTTP Services (WinHTTP) session. Syntax typedef enum WinHttpRequestOption { WinHttpRequestOption_UserAgentString, WinHttpRequestOption_URL, WinHttpRequestOption_URLCodePage, WinHttpRequestOption_EscapePercentInURL, WinHttpRequestOption_SslErrorIgnoreFlags, WinHttpRequestOption_Selec