Provided by: libglobus-gass-transfer-doc_7.2-4_all bug


       Referrals -

       globus_size_t globus_gass_transfer_referral_get_count (globus_gass_transfer_referral_t
       char * globus_gass_transfer_referral_get_url (globus_gass_transfer_referral_t *referral,
           globus_size_t index)
       int globus_gass_transfer_referral_destroy (globus_gass_transfer_referral_t *referral)

Detailed Description

       The GASS Transfer API supports referring URL requests to alternate URLs via referrals.

       Referrals are essentially pointers to another URL or URLs which contain the same file as
       the original location which a client has requested of a server. Referrals may span
       multiple protocol schemes, though not all protocols may be able to generate referrals. For
       example, an HTTP server may refer a client to another HTTP server, an HTTPS server.

       Upon receiving a referred response from a server, a client should query the request handle
       to determine from where the file can be retrieved.

Function Documentation

   globus_size_t globus_gass_transfer_referral_get_count (globus_gass_transfer_referral_t
       Get the number of URLs in this referral. This function examines the referral to determine
       if the number of URLs which are contained in it. Each of these URLs should either point to
       another referral, or to a URL containing the equivalent file as the original URL request
       which caused this referral.

           referral The referral structure to query.

           This function returns the number of URL entries in the referral, or 0, if there are

   char* globus_gass_transfer_referral_get_url (globus_gass_transfer_referral_t *referral,
       Get a URL string from a referral. This function examines the referral to retrieve a URL
       string from it. A valid referal will contain one or more strings. They are indexed from 0
       to the value returned by globus_gass_transfer_referral_get_count() - 1.

       The string returned by this function must not be freed by the caller. It will remain valid
       until the referral structure is destroyed.

           referral The referral structure to query.
           index The URL to extract from the referral.

           This function returns a string pointer containing the URL, or NULL if the index or
           referral were invalid.

   int globus_gass_transfer_referral_destroy (globus_gass_transfer_referral_t *referral)
       Free all memory used by a referral. This function frees all memory used by this referral.
       After calling this function, the strings returned by calling
       globus_gass_transfer_referral_get_url() must not be accessed. Any further attempts to
       extract informatoin from this referral will fail.

           referral The referral to destroy.

       Return values:
           GLOBUS_SUCCESS The referral was successfully destroyed.
           GLOBUS_GASS_TRANSFER_ERROR_NULL_POINTER The referral parameter was GLOBUS_NULL. It
           could not be destroyed.


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