zimport.c

用Dynamic C写的http程序

/*******************************************************************************
        zimport.c
        Z-World, 2003

        This program uses the ZIMPORT.LIB library to compress web pages
        that are served by the HTTP server.  It demonstrates a couple of
        different ways in which compressed files can be used with the
        HTTP server.

*******************************************************************************/
#class auto

/***********************************
 * Configuration                   *
 * -------------                   *
 * All fields in this section must *
 * be altered to match your local  *
 * network settings.               *
 ***********************************/

/*
 * Pick the predefined TCP/IP configuration for this sample.  See
 * LIB\TCPIP\TCP_CONFIG.LIB for instructions on how to set the
 * configuration.
 */
#define TCPCONFIG 1

/*
 * Web server configuration
 */

/*
 * Only one server and socket are needed on a reserved port, but more
 * servers allow more concurrent connections.
 */
#define HTTP_MAXSERVERS 4
#define MAX_TCP_SOCKET_BUFFERS 4

/*
 * INPUT_COMPRESSION_BUFFERS must be defined to be at least as large as
 * HTTP_MAXSERVERS.  Each server instance needs its own compression buffer,
 * because up to HTTP_MAXSERVERS compressed files can be simultaneously
 * uncompressed.  Note that if you are also uncompressing file outside of
 * the web server, you need to account for this in the number of
 * INPUT_COMPRESSION_BUFFERS.
 */
#define INPUT_COMPRESSION_BUFFERS 4

/********************************
 * End of configuration section *
 ********************************/

/*
 * Note that zimport.lib must be #use'd before http.lib (and zserver.lib
 * if you have explicity #use'd it).
 */
#use "zimport.lib"
#use "dcrtcp.lib"
#use "http.lib"

#zimport "samples/tcpip/http/pages/zimport.shtml"			zimport_shtml
#zimport "samples/tcpip/http/pages/alice.html"				alice_html
#zimport "samples/tcpip/http/pages/alice-rabbit.jpg"		alice_jpg

/* the default for / must be first */
SSPEC_MIMETABLE_START
	SSPEC_MIME_FUNC(".shtml", "text/html", shtml_handler),
	SSPEC_MIME(".html", "text/html"),
	SSPEC_MIME(".jpg", "image/jpeg")
SSPEC_MIMETABLE_END

/*
 * Compressed files, when included in the http_flashspec[] structure, will
 * be automatically uncompressed when they are sent to the client.
 *
 * Note: if a file is compressed (i.e. included using #zimport), use
 * SSPEC_RESOURCE_ZMEMFILE rather than SSPEC_RESOURCE_XMEMFILE.
 */
SSPEC_RESOURCETABLE_START
	SSPEC_RESOURCE_ZMEMFILE("/", zimport_shtml),
	SSPEC_RESOURCE_ZMEMFILE("/index.shtml", zimport_shtml),
	SSPEC_RESOURCE_ZMEMFILE("/alice.html", alice_html),
SSPEC_RESOURCETABLE_END

/*
 * The following variables will be used to hold the sizes of the compressed
 * text and image files, respectively.
 */
long text_size;
long image_size;

void main(void)
{
	/*
    * Get the compressed sizes of the files
    */
	xmem2root(&text_size, alice_html, 4);
	text_size &= ZIMPORT_MASK;
	xmem2root(&image_size, alice_jpg, 4);
	image_size &= ZIMPORT_MASK;

	/*
    * When compressed files are added via the sspec_addxmemfile() function,
    * they are automatically detected as such.  This is in distinction to
    * the static resource table setup (i.e. SSPEC_RESOURCE_* macros) which
    * require explicit specification at compile time.
    *
    * Note, that jpeg or gif files (as in the following) do not generally
    * compress well (or at all).  Hence, it is best to leave image files uncompressed.
    */
	sspec_addxmemfile("/alice.jpg", alice_jpg, SERVER_HTTP);
	sspec_addvariable("text_size", &text_size, INT32, "%ld", SERVER_HTTP);
   sspec_addvariable("image_size", &image_size, INT32, "%ld", SERVER_HTTP);

   sock_init();
   http_init();

   while (1) {
   	http_handler();
   }
}