Content-Length header.

We use MIME Content-Length header. More...

Defines
#define	HTTP_CONTENT_LENGTH_INIT()
	Initializer for structure http_content_length_t.
#define	HTTPTAG_CONTENT_LENGTH(x)
	Tag list item for pointer to a Content-Length header object.
#define	HTTPTAG_CONTENT_LENGTH_STR(s)
	Tag list item for string with Content-Length header value.
Enumerations
enum	{ http_content_length_hash }
Functions
http_content_length_t *	http_content_length_init (http_content_length_t x[1])
	Initialize a structure http_content_length_t.
int	http_is_content_length (http_header_t const *header)
	Test if header object is instance of http_content_length_t.
http_content_length_t *	http_content_length_dup (su_home_t *home, http_content_length_t const *hdr))
	Duplicate (deep copy) http_content_length_t.
http_content_length_t *	http_content_length_copy (su_home_t *home, http_content_length_t const *hdr))
	Copy a http_content_length_t header structure.
http_content_length_t *	http_content_length_make (su_home_t *home, char const *s))
	Make a header structure http_content_length_t.
http_content_length_t *	http_content_length_format (su_home_t *home, char const *fmt,...)))
	Make a Content-Length header from formatting result.
Variables
msg_hclass_t	http_content_length_class []
	Header class for HTTP Content-Length header.
msg_parse_f	http_content_length_d
	Decode (parse) a Content-Length header.
msg_print_f	http_content_length_e
	Encode (print) a Content-Length header.

---

Detailed Description

We use MIME Content-Length header.

---

Define Documentation

#define HTTP_CONTENT_LENGTH_INIT

(

)

Initializer for structure http_content_length_t.

A static http_content_length_t structure must be initialized with the HTTP_CONTENT_LENGTH_INIT() macro. For instance,

  http_content_length_t http_content_length = HTTP_CONTENT_LENGTH_INIT;

#define HTTPTAG_CONTENT_LENGTH

(

x

)

Tag list item for pointer to a Content-Length header object.

The HTTPTAG_CONTENT_LENGTH() macro is used to include a tag item with a pointer to a http_content_length_t object in a tag list.

Parameters:

x

pointer to a http_content_length_t header structure, or NULL.

#define HTTPTAG_CONTENT_LENGTH_STR

(

s

)

Tag list item for string with Content-Length header value.

The HTTPTAG_CONTENT_LENGTH_STR() macro is used to include a tag item with a string containing value of a http_content_length_t header in a tag list.

Parameters:

s

pointer to a string containing http_content_length_t value, or NULL.

The HTTPTAG_CONTENT_LENGTH_STR string can be converted to a http_content_length_t header structure by giving the string s has second argument to function http_content_length_make().

---

Enumeration Type Documentation

anonymous enum

Enumerator:

http_content_length_hash

Hash of Content-Length header.

---

Function Documentation

http_content_length_t * http_content_length_copy	(	su_home_t *	home,
		http_content_length_t const *	hdr
	)			[inline]

Copy a http_content_length_t header structure.

The function http_content_length_copy() copies a header structure hdr. If the header structure hdr contains a reference (hdr->h_next) to a list of headers, all the headers in that list are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header structure hdr.

Parameters:

	home	memory home used to allocate new structure
	hdr	pointer to the header structure to be duplicated

When copying, only the header structure and parameter lists attached to it are duplicated. The new header structure retains all the references to the strings within the old header, including the encoding of the old header, if present.

Example

   content_length = http_content_length_copy(home, http->http_content_length);

Returns:

The function http_content_length_copy() returns a pointer to newly copied header structure, or NULL upon an error.

http_content_length_t * http_content_length_dup	(	su_home_t *	home,
		http_content_length_t const *	hdr
	)			[inline]

Duplicate (deep copy) http_content_length_t.

The function http_content_length_dup() duplicates a header structure hdr. If the header structure hdr contains a reference (hdr->x_next) to a list of headers, all the headers in the list are duplicated, too.

Parameters:

	home	memory home used to allocate new structure
	hdr	header structure to be duplicated

When duplicating, all parameter lists and non-constant strings attached to the header are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header.

Example

   content_length = http_content_length_dup(home, http->http_content_length);

Returns:

The function http_content_length_dup() returns a pointer to the newly duplicated http_content_length_t header structure, or NULL upon an error.

http_content_length_t * http_content_length_format	(	su_home_t *	home,
		char const *	fmt,
			...
	)			[inline]

Make a Content-Length header from formatting result.

The function http_content_length_format() makes a new Content-Length header object using formatting result as its value. The function first prints the arguments according to the format fmt specified. Then it allocates a new header structure, and uses the formatting result as the header value.

Parameters:

	home	memory home used to allocate new header structure.
	fmt	string used as a printf()-style format
	...	argument list for format

Note:

This function is usually implemented as a macro calling msg_header_format().

Returns:

The function http_content_length_format() returns a pointer to newly makes header structure, or NULL upon an error.

http_content_length_t* http_content_length_init

(

http_content_length_t

x[1]

)

[inline]

Initialize a structure http_content_length_t.

An http_content_length_t structure can be initialized with the http_content_length_init() function/macro. For instance,

  http_content_length_t http_content_length;

  http_content_length_init(&http_content_length);

http_content_length_t * http_content_length_make	(	su_home_t *	home,
		char const *	s
	)			[inline]

Make a header structure http_content_length_t.

The function http_content_length_make() makes a new http_content_length_t header structure. It allocates a new header structure, and decodes the string s as the value of the structure.

Parameters:

	home	memory home used to allocate new header structure.
	s	string to be decoded as value of the new header structure

Note:

This function is usually implemented as a macro calling http_header_make().

Returns:

The function http_content_length_make() returns a pointer to newly maked http_content_length_t header structure, or NULL upon an error.

int http_is_content_length

(

http_header_t const *

header

)

[inline]

Test if header object is instance of http_content_length_t.

The function http_is_content_length() returns true (nonzero) if the header class is an instance of Content-Length header object and false (zero) otherwise.

Parameters:

header

pointer to the header structure to be tested

Returns:

The function http_is_xcontent_length() returns true (nonzero) if the header object is an instance of header content_length and false (zero) otherwise.

---

Variable Documentation

msg_hclass_t http_content_length_class[]

Header class for HTTP Content-Length header.

The header class http_content_length_class defines how a HTTP Content-Length header is parsed and printed. It also contains methods used by HTTP parser and other functions to manipulate the http_content_length_t header structure.