Figure 1   New MFC Internet Server API Classes

Class Name	Description
CHttpServer	Basis for DLL-based Internet server extensions
CHttpFilter	Creates an Internet server message
CHttpServerContext	Cooperates with CHttpServer to handle concurrent, multiple client requests
CHttpFilterContext	Cooperates with CHttpFilter to handle concurrent, multiple client requests
CHtmlStream	Models an HTML stream file

Figure 2   WWWQUOTE Parse Map

 CWWWQuote theExtension;
BEGIN_PARSE_MAP(CWWWQuote, CHttpServer)
    DEFAULT_PARSE_COMMAND(Quote, CWWWQuote)
    ON_PARSE_COMMAND(Quote, CWWWQuote, ITS_EMPTY)
    ON_PARSE_COMMAND(Issues, CWWWQuote, ITS_PSTR)
    ON_PARSE_COMMAND_PARAMS("Method")
    ON_PARSE_COMMAND(GetQuotes, CWWWQuote, ITS_PSTR ITS_I4, 
                     ITS_I4 ITS_I4 ITS_I4 ITS_I4 ITS_I4)
ON_PARSE_COMMAND_PARAMS("Ticker=~ Month=0 Year=0 MinMonth=0 MinYear=0 "
                        "MaxMonth=0 MaxYear=0")
ON_PARSE_COMMAND(PreviousMonth, CWWWQuote, 
                 ITS_PSTR ITS_I4 ITS_I4 ITS_I4 ITS_I4 ITS_I4 ITS_I4)
ON_PARSE_COMMAND_PARAMS("Ticker Month Year MinMonth MinYear " 
                        "MaxMonth MaxYear")
ON_PARSE_COMMAND(NextMonth, CWWWQuote, 
                 ITS_PSTR ITS_I4 ITS_I4 ITS_I4 ITS_I4 ITS_I4 ITS_I4)
ON_PARSE_COMMAND_PARAMS("Ticker Month Year MinMonth MinYear MaxMonth MaxYear")
END_PARSE_MAP(CWWWQuote)

Figure 3   Extension Control Block

 typedef struct _EXTENSION_CONTROL_BLOCK {

    DWORD     cbSize;                              //IN
    DWORD     dwVersion                            //IN
    HCONN     ConnID;                              //IN
    DWORD     dwHttpStatusCode;                   //OUT
    CHAR      lpszLogData[HSE_LOG_BUFFER_LEN];    //OUT
    LPSTR     lpszMethod;                          //IN
    LPSTR     lpszQueryString;                     //IN
    LPSTR     lpszPathInfo;                        //IN
    LPSTR     lpszPathTranslated;                  //IN
    DWORD     cbTotalBytes;                        //IN
    DWORD     cbAvailable;                         //IN
    LPBYTE    lpbData;                             //IN
    LPSTR     lpszContentType;                     //IN

    BOOL ( WINAPI * GetServerVariable )
          ( HCONN     hConn,
          LPSTR       lpszVariableName,
          LPVOID      lpvBuffer,
          LPDWORD     lpdwSize );

    BOOL ( WINAPI * WriteClient )
          ( HCONN    ConnID,
          LPVOID     Buffer,
          LPDWORD    lpdwBytes,
          DWORD      dwReserved );

    BOOL ( WINAPI * ReadClient )
          ( HCONN    ConnID,
          LPVOID     lpvBuffer,
          LPDWORD    lpdwSize );

    BOOL ( WINAPI * ServerSupportFunction )
          ( HCONN    hConn,
          DWORD      dwHSERRequest,
          LPVOID     lpvBuffer,
          LPDWORD    lpdwSize,
          LPDWORD    lpdwDataType );

} 

Figure 4   WinInet Classes

Class Name	Description
CInternetSession	Creates and initializes one or more Internet sessions, describing the connection to a proxy server if necessary.
CInternetConnection	Manages the connection to a server. It's the base class for CFtpConnection, CHttpConnection, and CGopherConnection.
CFtpConnection	Manages a connection to a server using FTP and supports direct manipulation of directories and files on the FTP server side of the connection.
CGopherConnection	Manages a connection to a Gopher server. The class contains a constructor and three additional member functions: OpenFile, CreateLocator, and GetAttribute.
CHttpConnection	Manages an HTTP connection. Contains a constructor and the member function OpenRequest.
CInternetFile	The base class for the CHttpFile and CGopherFile file classes. Allows access to files on remote systems that use Internet protocols.
CHttpFile	Finds and read files on an HTTP server.
CGopherFile	Finds and reads files on a Gopher server. The Gopher service supported by this class is read-only.
CFileFind	Performs local and Internet file searches and is the base class for CGopherFileFind and CFtpFileFind.
CGopherFileFind	Searches Gopher servers.
CFtpFileFind	Searches FTP servers.
CInternetException	Encapsulates an Internet-related exception condition.
AfxParseURL	Parses URLs of the form <service>://server/dir/dir/object.ext:<port>
AfxGetInternetHandleType	Determines the type of an Internet handle.