Host header.

Defines
#define	HTTP_HOST_INIT()
	Initializer for structure http_host_t.
#define	HTTPTAG_HOST(x)
	Tag list item for pointer to a Host header object.
#define	HTTPTAG_HOST_STR(s)
	Tag list item for string with Host header value.
Enumerations
enum	{ http_host_hash }
Functions
http_host_t *	http_host_init (http_host_t x[1])
	Initialize a structure http_host_t.
int	http_is_host (http_header_t const *header)
	Test if header object is instance of http_host_t.
http_host_t *	http_host_dup (su_home_t *home, http_host_t const *hdr))
	Duplicate (deep copy) http_host_t.
http_host_t *	http_host_copy (su_home_t *home, http_host_t const *hdr))
	Copy a http_host_t header structure.
http_host_t *	http_host_make (su_home_t *home, char const *s))
	Make a header structure http_host_t.
http_host_t *	http_host_format (su_home_t *home, char const *fmt,...)))
	Make a Host header from formatting result.
Variables
msg_hclass_t	http_host_class []
	Header class for HTTP Host header.
msg_parse_f	http_host_d
	Decode (parse) a Host header.
msg_print_f	http_host_e
	Encode (print) a Host header.

---

Detailed Description

    Host = "Host" ":" host [ ":" port ]

---

Define Documentation

#define HTTP_HOST_INIT

(

)

Initializer for structure http_host_t.

A static http_host_t structure must be initialized with the HTTP_HOST_INIT() macro. For instance,

  http_host_t http_host = HTTP_HOST_INIT;

#define HTTPTAG_HOST

(

x

)

Tag list item for pointer to a Host header object.

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

Parameters:

x

pointer to a http_host_t header structure, or NULL.

#define HTTPTAG_HOST_STR

(

s

)

Tag list item for string with Host header value.

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

Parameters:

s

pointer to a string containing http_host_t value, or NULL.

The HTTPTAG_HOST_STR string can be converted to a http_host_t header structure by giving the string s has second argument to function http_host_make().

---

Enumeration Type Documentation

anonymous enum

Enumerator:

http_host_hash

Hash of Host header.

---

Function Documentation

http_host_t * http_host_copy	(	su_home_t *	home,
		http_host_t const *	hdr
	)			[inline]

Copy a http_host_t header structure.

The function http_host_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

   host = http_host_copy(home, http->http_host);

Returns:

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

http_host_t * http_host_dup	(	su_home_t *	home,
		http_host_t const *	hdr
	)			[inline]

Duplicate (deep copy) http_host_t.

The function http_host_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

   host = http_host_dup(home, http->http_host);

Returns:

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

http_host_t * http_host_format	(	su_home_t *	home,
		char const *	fmt,
			...
	)			[inline]

Make a Host header from formatting result.

The function http_host_format() makes a new Host 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_host_format() returns a pointer to newly makes header structure, or NULL upon an error.

http_host_t* http_host_init

(

http_host_t

x[1]

)

[inline]

Initialize a structure http_host_t.

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

  http_host_t http_host;

  http_host_init(&http_host);

http_host_t * http_host_make	(	su_home_t *	home,
		char const *	s
	)			[inline]

Make a header structure http_host_t.

The function http_host_make() makes a new http_host_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_host_make() returns a pointer to newly maked http_host_t header structure, or NULL upon an error.

int http_is_host

(

http_header_t const *

header

)

[inline]

Test if header object is instance of http_host_t.

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

Parameters:

header

pointer to the header structure to be tested

Returns:

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

---

Variable Documentation

msg_hclass_t http_host_class[]

Header class for HTTP Host header.

The header class http_host_class defines how a HTTP Host header is parsed and printed. It also contains methods used by HTTP parser and other functions to manipulate the http_host_t header structure.