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Raptor RDF Syntax Library Manual | ![]() |
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Top | Description |
typedef raptor_www; raptor_www * raptor_new_www (raptor_world *world
); raptor_www * raptor_new_www_with_connection (raptor_world *world
,void *connection
); void raptor_free_www (raptor_www *www
); void (*raptor_www_write_bytes_handler) (raptor_www *www
,void *userdata
,const void *ptr
,size_t size
,size_t nmemb
); void (*raptor_www_content_type_handler) (raptor_www *www
,void *userdata
,const char *content_type
); void raptor_www_set_user_agent (raptor_www *www
,const char *user_agent
); void raptor_www_set_proxy (raptor_www *www
,const char *proxy
); void raptor_www_set_http_accept (raptor_www *www
,const char *value
); int raptor_www_set_http_cache_control (raptor_www *www
,const char *cache_control
); void raptor_www_set_write_bytes_handler (raptor_www *www
,raptor_www_write_bytes_handler handler
,void *user_data
); void raptor_www_set_connection_timeout (raptor_www *www
,int timeout
); void raptor_www_set_content_type_handler (raptor_www *www
,raptor_www_content_type_handler handler
,void *user_data
); int (*raptor_uri_filter_func) (void *user_data
,raptor_uri *uri
); void raptor_www_set_uri_filter (raptor_www *www
,raptor_uri_filter_func filter
,void *user_data
); void (*raptor_www_final_uri_handler) (raptor_www *www
,void *userdata
,raptor_uri *final_uri
); raptor_uri * raptor_www_get_final_uri (raptor_www *www
); void raptor_www_set_final_uri_handler (raptor_www *www
,raptor_www_final_uri_handler handler
,void *user_data
); int raptor_www_fetch (raptor_www *www
,raptor_uri *uri
); int raptor_www_fetch_to_string (raptor_www *www
,raptor_uri *uri
,void **string_p
,size_t *length_p
,raptor_data_malloc_handler const malloc_handler
); void * raptor_www_get_connection (raptor_www *www
); int raptor_www_set_ssl_cert_options (raptor_www *www
,const char *cert_filename
,const char *cert_type
,const char *cert_passphrase
); int raptor_www_set_ssl_verify_options (raptor_www *www
,int verify_peer
,int verify_host
); void raptor_www_abort (raptor_www *www
,const char *reason
);
Provides a wrapper to the resolution of URIs to give content using an underlying WWW-retrieval library. The content is delivered by callbacks and includes returning content type for handling content-negotation by the caller as well as chunks of byte content.
raptor_www * raptor_new_www (raptor_world *world
);
Constructor - create a new raptor_www object.
|
raptor_world object |
Returns : |
a new raptor_www or NULL on failure. |
raptor_www * raptor_new_www_with_connection (raptor_world *world
,void *connection
);
Constructor - create a new raptor_www object over an existing WWW connection.
At present this only works with a libcurl CURL handle object
when raptor is compiled with libcurl suppport. Otherwise the
connection
is ignored. This allows such things as setting
up special flags on the curl handle before passing into the constructor.
|
raptor_world object |
|
external WWW connection object. |
Returns : |
a new raptor_www object or NULL on failure. |
void raptor_free_www (raptor_www *www
);
Destructor - destroy a raptor_www object.
|
WWW object. |
void (*raptor_www_write_bytes_handler) (raptor_www *www
,void *userdata
,const void *ptr
,size_t size
,size_t nmemb
);
Receiving bytes of data from WWW retrieval handler.
Set by raptor_www_set_write_bytes_handler()
.
|
WWW object |
|
user data |
|
data pointer |
|
size of individual item |
|
number of items |
void (*raptor_www_content_type_handler) (raptor_www *www
,void *userdata
,const char *content_type
);
Receiving Content-Type: header from WWW retrieval handler.
Set by raptor_www_set_content_type_handler()
.
|
WWW object |
|
user data |
|
content type seen |
void raptor_www_set_user_agent (raptor_www *www
,const char *user_agent
);
Set the user agent value, for HTTP requests typically.
|
WWW object |
|
User-Agent string |
void raptor_www_set_proxy (raptor_www *www
,const char *proxy
);
Set the proxy for the WWW object.
The proxy
usually a string of the form http://server.domain:port.
|
WWW object |
|
proxy string. |
void raptor_www_set_http_accept (raptor_www *www
,const char *value
);
Set HTTP Accept header.
|
raptor_www class |
|
Accept: header value or NULL to have an empty one. |
int raptor_www_set_http_cache_control (raptor_www *www
,const char *cache_control
);
Set HTTP Cache-Control:header (default none)
The cache_control
value can be a string to set it, "" to send
a blank header or NULL to not set the header at all.
|
WWW object |
|
Cache-Control header value (or NULL to disable) |
Returns : |
non-0 on failure |
void raptor_www_set_write_bytes_handler (raptor_www *www
,raptor_www_write_bytes_handler handler
,void *user_data
);
Set the handler to receive bytes written by the raptor_www implementation.
|
WWW object |
|
bytes handler function |
|
bytes handler data |
void raptor_www_set_connection_timeout (raptor_www *www
,int timeout
);
Set WWW connection timeout
|
WWW object |
|
Timeout in seconds |
void raptor_www_set_content_type_handler (raptor_www *www
,raptor_www_content_type_handler handler
,void *user_data
);
Set the handler to receive the HTTP Content-Type header value.
This is called if or when the value is discovered during retrieval by the raptor_www implementation. Not all implementations provide access to this.
|
WWW object |
|
content type handler function |
|
content type handler data |
int (*raptor_uri_filter_func) (void *user_data
,raptor_uri *uri
);
Callback function for raptor_www_set_uri_filter
|
user data |
|
raptor_uri URI to check |
Returns : |
non-0 to filter the URI |
void raptor_www_set_uri_filter (raptor_www *www
,raptor_uri_filter_func filter
,void *user_data
);
Set URI filter function for WWW retrieval.
|
WWW object |
|
URI filter function |
|
User data to pass to filter function |
void (*raptor_www_final_uri_handler) (raptor_www *www
,void *userdata
,raptor_uri *final_uri
);
Receiving the final resolved URI from a WWW retrieval
Set by raptor_www_set_final_uri_handler()
.
|
WWW object |
|
user data |
|
final URI seen |
raptor_uri * raptor_www_get_final_uri (raptor_www *www
);
Get the WWW final resolved URI.
This returns the URI used after any protocol redirection.
|
raptor_www object |
Returns : |
a new URI or NULL if not known. |
void raptor_www_set_final_uri_handler (raptor_www *www
,raptor_www_final_uri_handler handler
,void *user_data
);
Set the handler to receive the HTTP Content-Type header value.
This is called if or when the value is discovered during retrieval by the raptor_www implementation. Not all implementations provide access to this.
|
WWW object |
|
content type handler function |
|
content type handler data |
int raptor_www_fetch (raptor_www *www
,raptor_uri *uri
);
Start a WWW content retrieval for the given URI, returning data via the write_bytes handler.
|
WWW object |
|
URI to read from |
Returns : |
non-0 on failure. |
int raptor_www_fetch_to_string (raptor_www *www
,raptor_uri *uri
,void **string_p
,size_t *length_p
,raptor_data_malloc_handler const malloc_handler
);
Start a WWW content retrieval for the given URI, returning the data in a new string.
If malloc_handler
is null, raptor will allocate it using it's
own memory allocator. *string_p is set to NULL on failure (and
*length_p to 0 if length_p is not NULL).
|
raptor_www object |
|
raptor_uri to retrieve |
|
pointer to location to hold string |
|
pointer to location to hold length of string (or NULL) |
|
pointer to malloc() to use to make string (or NULL) |
Returns : |
non-0 on failure |
void * raptor_www_get_connection (raptor_www *www
);
Get WWW library connection object.
Return the internal WWW connection handle. For libcurl, this returns the CURL handle and for libxml the context. Otherwise it returns NULL.
|
raptor_www object |
Returns : |
connection pointer |
int raptor_www_set_ssl_cert_options (raptor_www *www
,const char *cert_filename
,const char *cert_type
,const char *cert_passphrase
);
Set SSL client certificate options (where supported)
|
WWW object |
|
SSL client certificate file |
|
SSL client certificate type (default is "PEM") |
|
SSL client certificate password |
Returns : |
non-0 when setting options is not supported |
int raptor_www_set_ssl_verify_options (raptor_www *www
,int verify_peer
,int verify_host
);
Set whether SSL verifies the authenticity of the peer's certificate
These options correspond to setting the curl CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST options.
|
WWW object |
|
SSL verify peer - non-0 to verify peer SSL certificate (default) |
|
SSL verify host - 0 none, non-0 to require a CN match (default). |
Returns : |
non-0 on failure |
void raptor_www_abort (raptor_www *www
,const char *reason
);
Abort an ongoing raptor WWW operation and pass back a reason.
This is typically used within one of the raptor WWW handlers when retrieval need no longer continue due to another processing issue or error.
|
WWW object |
|
abort reason message |