url.h File Reference

URL fetch utility. More...

#include <yaz/zgdu.h>

Go to the source code of this file.

Typedefs
typedef struct yaz_url *	yaz_url_t
	handle for our URL fetcher

Functions
yaz_url_t	yaz_url_create (void)
	creates a URL fetcher handle
void	yaz_url_destroy (yaz_url_t p)
	destroys a URL fetcher
void	yaz_url_set_proxy (yaz_url_t p, const char *proxy)
	sets proxy for URL fetcher
void	yaz_url_set_max_redirects (yaz_url_t p, int num)
	sets maximum number of redirects
void	yaz_url_set_verbose (yaz_url_t p, int num)
	sets verbose level 0=none, >0 verbose
void	yaz_url_set_timeout (yaz_url_t p, int sec, int ns)
	sets I/O timeout
Z_HTTP_Response *	yaz_url_exec (yaz_url_t p, const char *uri, const char *method, Z_HTTP_Header *headers, const char *buf, size_t len)
	executes the actual HTTP request (including redirects, etc)
const char *	yaz_url_get_error (yaz_url_t p)
	get last error from yaz_url_exec

Detailed Description

URL fetch utility.

Definition in file url.h.

Typedef Documentation

yaz_url_t

typedef struct yaz_url* yaz_url_t

handle for our URL fetcher

Definition at line 41 of file url.h.

Function Documentation

yaz_url_create()

yaz_url_t yaz_url_create

(

void

)

creates a URL fetcher handle

Returns

handle

Definition at line 32 of file url.c.

References yaz_url::cookies, yaz_url::max_redirects, odr_createmem(), ODR_DECODE, ODR_ENCODE, yaz_url::odr_in, yaz_url::odr_out, yaz_url::proxy, yaz_url::timeout_ns, yaz_url::timeout_sec, yaz_url::verbose, yaz_url::w_error, wrbuf_alloc(), xmalloc, and yaz_cookies_create().

Referenced by rdf_lookup_node().

yaz_url_destroy()

void yaz_url_destroy

(

yaz_url_t

p

)

destroys a URL fetcher

Parameters

p

handle

Note: OK to pass NULL as p

Definition at line 47 of file url.c.

References yaz_url::cookies, odr_destroy(), yaz_url::odr_in, yaz_url::odr_out, yaz_url::proxy, yaz_url::w_error, wrbuf_destroy(), xfree, and yaz_cookies_destroy().

Referenced by rdf_lookup_node().

yaz_url_exec()

Z_HTTP_Response * yaz_url_exec	(	yaz_url_t	p,
		const char *	uri,
		const char *	method,
		Z_HTTP_Header *	headers,
		const char *	buf,
		size_t	len
	)

executes the actual HTTP request (including redirects, etc)

Parameters

p	handle
uri	URL
method	HTTP method
headers	HTTP headers to be used (NULL for no custom headers)
buf	content buffer for HTTP request, NULL for empty content
len	content length for HTTP request

Returns

HTTP response; NULL on ERROR.

Use yaz_url_get_error to get details if NULL is returned.

Definition at line 132 of file url.c.

References Z_HTTP_Response::code, Z_HTTP_Request::content_buf, Z_HTTP_Request::content_len, yaz_url::cookies, cs_close, cs_connect, cs_create_host2(), cs_fileno, cs_get, cs_put, cs_rcvconnect, cs_set_head_only(), CS_WANT_READ, CS_WANT_WRITE, extract_user_pass(), yaz_poll_fd::fd, Z_HTTP_Request::headers, Z_HTTP_Response::headers, Z_GDU::HTTP_Request, Z_GDU::HTTP_Response, yaz_poll_fd::input_mask, comstack::io_pending, log_warn(), odr::mem, Z_HTTP_Request::method, Z_HTTP_Header::name, Z_HTTP_Header::next, odr_getbuf(), yaz_url::odr_in, yaz_url::odr_out, odr_reset(), odr_setbuf(), odr_strdup(), yaz_url::proxy, yaz_url::timeout_ns, yaz_url::timeout_sec, Z_GDU::u, Z_HTTP_Header::value, yaz_url::verbose, yaz_url::w_error, Z_GDU::which, wrbuf_printf(), wrbuf_rewind(), xfree, yaz_check_location(), yaz_cookies_request(), yaz_cookies_reset(), yaz_cookies_response(), yaz_poll(), yaz_poll_add, yaz_poll_except, yaz_poll_none, yaz_poll_read, yaz_poll_write, z_GDU(), Z_GDU_HTTP_Response, z_get_HTTP_Request_uri(), z_HTTP_header_add(), z_HTTP_header_add_basic_auth(), z_HTTP_header_lookup(), and z_HTTP_header_set().

Referenced by rdf_lookup_node().

yaz_url_get_error()

const char * yaz_url_get_error

(

yaz_url_t

p

)

get last error from yaz_url_exec

Parameters

p

handle

Returns

message (possibly empty string no error occurred)

Definition at line 122 of file url.c.

References yaz_url::w_error, and wrbuf_cstr().

Referenced by rdf_lookup_node().

yaz_url_set_max_redirects()

void yaz_url_set_max_redirects	(	yaz_url_t	p,
		int	num
	)

sets maximum number of redirects

Parameters

p	handle
num	maximum number of redirects

Definition at line 68 of file url.c.

References yaz_url::max_redirects.

Referenced by rdf_lookup_node().

yaz_url_set_proxy()

void yaz_url_set_proxy	(	yaz_url_t	p,
		const char *	proxy
	)

sets proxy for URL fetcher

Parameters

p	handle
proxy	proxy address , e.g "localhost:3128"

Passing a proxy of NULL disables proxy use.

Definition at line 60 of file url.c.

References yaz_url::proxy, xfree, and xstrdup.

yaz_url_set_timeout()

void yaz_url_set_timeout	(	yaz_url_t	p,
		int	sec,
		int	ns
	)

sets I/O timeout

Parameters

p	handle
sec	major part of timeout in seconds
ns	minor part of timeout in nanoseconds

Definition at line 78 of file url.c.

References yaz_url::timeout_ns, and yaz_url::timeout_sec.

Referenced by rdf_lookup_node().

yaz_url_set_verbose()

void yaz_url_set_verbose	(	yaz_url_t	p,
		int	num
	)

sets verbose level 0=none, >0 verbose

Parameters

p	handle
num	verbose level

Definition at line 73 of file url.c.

References yaz_url::verbose.