sbinet.h

OSB-PIK-OpenVXI-3.0.0源代码 “中国XML论坛 - 专业的XML技术讨论区--XML在语音技术中的应用”

 /****************License************************************************
  *
  * Copyright 2000-2003.  ScanSoft, Inc.    
  *
  * Use of this software is subject to notices and obligations set forth 
  * in the SpeechWorks Public License - Software Version 1.2 which is 
  * included with this software. 
  *
  * ScanSoft is a registered trademark of ScanSoft, Inc., and OpenSpeech, 
  * SpeechWorks and the SpeechWorks logo are registered trademarks or 
  * trademarks of SpeechWorks International, Inc. in the United States 
  * and other countries.
  *
  ***********************************************************************/
 

 #ifndef _SBINET_H
 #define _SBINET_H
 
 #include "VXIinet.h"                   /* For VXIinet base interface */
 #include "VXIlog.h"                    /* For VXIlog interface */
 #include "VXIcache.h"                  /* For VXIcache interface */
 
 #include "VXIheaderPrefix.h"
 #ifdef SBINET_EXPORTS
 #define SBINET_API SYMBOL_EXPORT_DECL
 #else
 #define SBINET_API SYMBOL_IMPORT_DECL
 #endif
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /**
  * @name SBinet
  * @memo SBinet implementation of VXIinet
  * @doc
  * SBinet interface, and implementation of the VXIinet abstract
  * interface for Internet functionality including HTTP requests, local
  * file access, URL caching, memory buffer caching, and cookie
  * access. <p>
  *
  * The interface is a synchronous interface based on the ANSI/ISO C
  * standard file I/O interface, the only exception is that pre-fetches are
  * asynchronous. The client of the interface may use this in an
  * asynchronous manner by using non-blocking I/O operations, creating
  * threads, or by invoking this from a separate server process. <p>
  *
  * This implementation currently does NOT support INET_MODE_WRITE for
  * http:// access (HTTP PUT), and only supports http://, file://, and
  * OS dependant paths.
  *
  * There is one Internet interface per thread/line.
  */
 
   /*@{*/
 
 /**
  * Default value for the User Agent Name parameter of SBinetInit()
  */
 #define SBINET_USER_AGENT_NAME_DEFAULT \
               L"OpenVXITestApp/" VXI_CURRENT_VERSION_STR
 
 
 /**
  * Global platform initialization of SBinet
  *
  * @param log              VXI Logging interface used for error/diagnostic
  *                         logging, only used for the duration of this
  *                         function call
  * @param reserved1        Reserved for future use
  * @param reserved2        Reserved for future use
  * @param reserved3        Reserved for future use
  * @param reserved4        Reserved for future use
  * @param proxyServer      Name of the proxy server to use for HTTP access,
  *                         pass a server name or IP address, or NULL to
  *                         do direct HTTP access.
  * @param proxyPort        Port number for accessing the proxy server.
  * @param userAgentName    HTTP user agent name sent in all HTTP messages.
  *                         Must be of the form <app>/<version> with no
  *                         spaces, such as "OpenVXI/1.0". When using the
  *                         OpenVXI application name or a derrivative, use
  *                         use VXI_CURRENT_VERSION_STR for the version.
  * @param extensionRules   Rules for mapping file extensions to MIME content
  *                         types, used for that purpose when accessing
  *                         local files and file:// URLs. Each key in the
  *                         map must be an extension (period followed by the
  *                         extension such as ".txt") with the value being
  *                         the MIME content type for that extension.  Copied
  *                         internally so the pointer that is passed in still
  *                         belongs to the caller.
  * @param reserved         Reserved VXIVector, pass NULL
  *
  * @result VXIinet_RESULT_SUCCESS on success
  */
 SBINET_API VXIinetResult SBinetInit (VXIlogInterface  *log,
 				     const VXIunsigned diagLogBase,
 				     const VXIchar    *reserved1,
 				     const VXIint      reserved2,
 				     const VXIint      reserved3,
 				     const VXIint      reserved4,
 				     const VXIchar    *proxyServer,
 				     const VXIulong    proxyPort,
 				     const VXIchar    *userAgentName,
 				     const VXIMap     *extensionRules,
 				     const VXIVector  *reserved);
 
 
 /*  Properties used in the VXIMap configParams arguments to SBinetInitEx. */
 
   /* Rules for mapping file extensions to MIME content types, used for that
    * purpose when accessing local files and file:// URLs. The associated value
    * is a VXIMap whose keys must be an extension (period followed by the
    * extension such as ".txt") with the value being the MIME content type for
    * that extension.
    */
 #define SBINET_EXTENSION_RULES       L"com.speechworks.inet.extension.rules"
 
   /* Rules for determining the proxy to use for given domains.  The associated
    * value is a VXIVector whose entries are VXIString representing a key-value
    * pair delimited by a vertical bar ('|') the key (left of the vertical bar)
    * represents partial URLs to which a proxy applies, and the value is of the
    * form of proxy:port representing the proxy/port combination to be used for
    * the corresponding domain.  The partial URLs are of the form domain/path
    * where the left of the slash ('/') represents a domain (and must start
    * with a dot '.' or be empty) and the part after the slash represents paths
    * on this domain.  If the slash is omitted, then all paths in this domain
    * apply.  Each entry are verified for a match in the order in which they
    * appear in the VXIVector.  Also, if nothing is specified in the proxy
    * field (after the vertical bar), it means that no proxy is used
 
    An entry matches a URL if its domain is a suffix of the URL's domain and
    its path is a prefix of the URL's path.
 
 
    For Example:  Assuming the following vector
    1)   ".speechworks.com/specialPath | proxy1:port1"
    2)   ".speechworks.com             |"
    3)   ".com                         | proxy1:port1"
    4)   "                             | proxy2:port2"
 
 
    The following URL would use the following proxy.
 
    www.speechworks.com                           -> no proxy (rule 2)
    www.speechworks.com/specialPath/index.html    -> proxy1:port1 (rule1)
    www.foo.bar.com                               -> proxy1:port1 (rule3)
    www.mit.edu                                   -> proxy2:port2 (rule4)
 
    Also note that if order of rule-1 and rule-2 were reversed, than the
    ".speechworks.com/specialPath" rule would never be triggered as it is more
    specific than the ".speechworks.com" rule.
    */
 #define SBINET_PROXY_RULES           L"com.speechworks.inet.proxy.rules"
 
   /* Default timeout for fetching a page when not explicitely specified
    * through the INET_TIMEOUT_DOWNLOAD property in the properties VXIMap
    * argument of the VXIinterface::Open() function.  This value must be a
    * VXIInteger and the units are expressed in milliseconds.  If not
    * specified, the default timeout used is 60000 (1 minute).
    */
 #define SBINET_PAGE_LOADING_TIMEOUT  L"com.speechworks.inet.pageLoadingTimeout"
 
   /* Default value for SBINET_PAGE_LOADING_TIMEOUT */
 #define SBINET_PAGE_LOADING_TIMEOUT_DEFAULT  60000
 
   /* Properties used to estimate the cache lifetime of URIs that only have the
    * Last-Modified header defined.
    *
    * SBINET_FRESHNESS_FRACTION must be a VXIFloat between 0 and 1.
    *
    * SBINET_FRESHNESS_LIFETIME must be a VXIInteger whose units are in
    * milliseconds.
    *
    * The freshness lifetime of an HTTP document having only Last-Modified
    * information is computed as the minimum between the amount of time since
    * the last modification multiplied by SBINET_FRESHNESS_FRACTION and
    * SBINET_FRESHNESS_LIFETIME.
    *
    *
    * freshness = MIN((now - lastMod) * SBINET_FRESHNESS_FRACTION,
    *                 SBINET_FRESHNESS_LIFETIME)
    *
    * Default values are 0.1 for SBINET_FRESHNESS_FRACTION and 86400 (24 hours)
    * for SBINET_FRESHNESS_LIFETIME.
    */
 #define SBINET_FRESHNESS_FRACTION    L"com.speechworks.inet.freshnessFraction"
 #define SBINET_FRESHNESS_LIFETIME    L"com.speechworks.inet.freshnessLifetime"
 
   /* Default value for SBINET_FRESHNESS_FRACTION */
 #define SBINET_FRESHNESS_FRACTION_DEFAULT 0.1
 
   /* Default value for SBINET_FRESHNESS_LIFETIME */
 #define SBINET_FRESHNESS_LIFETIME_DEFAULT 86400
 
   /* If returned paged from web server do not contain any caching information
    * nor any Last-Modified header, this is the amount of time (number of
    * seconds) that the page will be considered fresh before a new HTTP request
    * is performed for this page.  This value must be a VXIInteger and defaults
    * to 0 (immediate expiration) if not specified.
    */
 #define SBINET_MAX_LIFETIME          L"com.speechworks.inet.maxLifetime"
 
   /* Default value for SBINET_MAX_LIFETIME */
 #define SBINET_MAX_LIFETIME_DEFAULT 0
 
   /* Number of milliseconds that a POST-request should wait for a response.
    * This value must be a VXIInteger.  Default value is 5000 (5 seconds).
    */
 #define SBINET_POST_CONTINUE_TIMEOUT L"com.speechworks.inet.postContinueTimeout"
 
   /* Default value for SBINET_POST_CONTINUE_TIMEOUT */
 #define SBINET_POST_CONTINUE_TIMEOUT_DEFAULT  5000
 
   /* Property specifiying tsent in all HTTP messages.  If specified, it must
    * be a VXIString of the form <app>/<version> with no spaces, such as
    * "OpenVXI/1.0". When using the OpenVXI application name or a derivative,
    * use use VXI_CURRENT_VERSION_STR for the version.  Default value is
    * specified by SBINET_USER_AGENT_NAME_DEFAULT.
    */
 #define SBINET_USER_AGENT_NAME L"com.speechworks.inet.userAgentName"
 
   /*
    * Properties allowing to disable persistent connections.  If this property
    * is specified and is a VXIInteger with a value of 0, then a new connection
    * is established, by default, for each HTTP request.  If this property is
    * not specified or is not a VXIInteger with a value of 0, then persistent
    * connections are enabled.  This property is overridden by the
    * INET_CLOSE_CONNECTION and the INET_NEW_CONNECTION properties that can
    * be passed to the Open() method of the VXIinet interface.
    */
 #define SBINET_PERSISTENT_CONNECTIONS L"com.speechworks.inet.usePersistentConnections"
 
   /* Default MIME type returned when it was not possible to determine the
    * MIME type of a file URI from its extension or when an HTTP server
    * does not return MIME type information.
    */
 #define SBINET_DEFAULT_MIME_TYPE L"com.speechworks.inet.defaultMimeType"
 
 /**
  * Global platform initialization (extended version) of SBinet.
  *
  * @param log              VXI Logging interface used for error/diagnostic
  *                         logging, only used for the duration of this
  *                         function call
  * @param diagLogBase      VXI Diagnostic Logging Base tag.
  * @param configParams     Map containing configuration parameters used to
  *                         initialize SBinet.  These parameters are the
  *                         properties defined above.  Once the function returns,
  *                         this Map can safely be destroyed as it is the
  *                         responsibility of SBinet to copy any data
  *                         it might require after initialization.
  *
  * @result VXIinet_RESULT_SUCCESS on success
  */
 SBINET_API VXIinetResult SBinetInitEx(VXIlogInterface  *log,
                                       const VXIunsigned diagLogBase,
                                       const VXIMap     *configParams);
 
 /**
  * Global platform shutdown of SBinet
  *
  * @param log    VXI Logging interface used for error/diagnostic logging,
  *               only used for the duration of this function call
  *
  * @result VXIinet_RESULT_SUCCESS on success
  */
 SBINET_API VXIinetResult SBinetShutDown (VXIlogInterface  *log);
 
 /**
  * Create a new inet service handle
  *
  * @param log     VXI Logging interface used for error/diagnostic
  *                logging, must remain a valid pointer throughout the
  *                lifetime of the resource (until SBinetDestroyResource( )
  *                is called)
  * @param cache   VXI Cache interface used for HTTP document caching,
  *                must remain a valid pointer throughout the lifetime of
  *                the resource (until SBinetDestroyResource( ) is called)
  *
  * @result VXIinet_RESULT_SUCCESS on success
  */
 SBINET_API
 VXIinetResult SBinetCreateResource (VXIlogInterface     *log,
 				    VXIcacheInterface   *cache,
                                     VXIinetInterface   **inet);
 
 /**
  * Destroy the interface and free internal resources. Once this is
  *  called, the logging interface passed to SBinetCreateResource( )
  *  may be released as well.
  *
  * @result VXIinet_RESULT_SUCCESS on success
  */
 SBINET_API
 VXIinetResult SBinetDestroyResource (VXIinetInterface **inet);
 
   /*@}*/
 
 #ifdef __cplusplus
 }
 #endif
 
 #include "VXIheaderSuffix.h"
 
 #endif  /* include guard */