Suppress-Notify-If-Match Header [SIP Headers]

The Suppress-Notify-If-Match header is used to suppress superfluous NOTIFY transactions. More...

Data Structures
struct	sip_suppress_notify_if_match_s
	Structure for Suppress-Notify-If-Match header. More...
Defines
#define	sip_suppress_notify_if_match(sip)
	Access a SIP Suppress-Notify-If-Match header structure sip_suppress_notify_if_match_t from sip_t.
#define	SIP_SUPPRESS_NOTIFY_IF_MATCH_INIT()
	Initializer for structure sip_suppress_notify_if_match_t.
#define	SIPTAG_SUPPRESS_NOTIFY_IF_MATCH(x)
	Tag list item for pointer to a Suppress-Notify-If-Match header structure sip_suppress_notify_if_match_t.
#define	SIPTAG_SUPPRESS_NOTIFY_IF_MATCH_REF(x)
	Tag list item for reference to a Suppress-Notify-If-Match header pointer.
#define	SIPTAG_SUPPRESS_NOTIFY_IF_MATCH_STR(s)
	Tag list item for string with Suppress-Notify-If-Match header value.
#define	SIPTAG_SUPPRESS_NOTIFY_IF_MATCH_STR_REF(x)
	Tag list item for reference to a Suppress-Notify-If-Match header string.
Typedefs
typedef struct sip_suppress_notify_if_match_s	sip_suppress_notify_if_match_t
	The structure sip_suppress_notify_if_match_t contains representation of a SIP Suppress-Notify-If-Match header.
Functions
issize_t	sip_suppress_notify_if_match_d (su_home_t *, msg_header_t *, char *s, isize_t slen)
	Parse a SIP Suppress-Notify-If-Match header.
issize_t	sip_suppress_notify_if_match_e (char b[], isize_t bsiz, msg_header_t const *h, int flags)
	Print a SIP Suppress-Notify-If-Match header.
sip_suppress_notify_if_match_t *	sip_suppress_notify_if_match_init (sip_suppress_notify_if_match_t x[1])
	Initialize a structure sip_suppress_notify_if_match_t.
int	sip_is_suppress_notify_if_match (sip_header_t const *header)
	Test if header object is instance of sip_suppress_notify_if_match_t.
sip_suppress_notify_if_match_t *	sip_suppress_notify_if_match_dup (su_home_t *home, sip_suppress_notify_if_match_t const *hdr))
	Duplicate a list of Suppress-Notify-If-Match header header structures sip_suppress_notify_if_match_t.
sip_suppress_notify_if_match_t *	sip_suppress_notify_if_match_copy (su_home_t *home, sip_suppress_notify_if_match_t const *hdr))
	Copy a list of Suppress-Notify-If-Match header header structures sip_suppress_notify_if_match_t.
sip_suppress_notify_if_match_t *	sip_suppress_notify_if_match_make (su_home_t *home, char const *s))
	Make a Suppress-Notify-If-Match header structure sip_suppress_notify_if_match_t.
sip_suppress_notify_if_match_t *	sip_suppress_notify_if_match_format (su_home_t *home, char const *fmt,...)))
	Make a Suppress-Notify-If-Match header from formatting result.
Variables
msg_hclass_t	sip_suppress_notify_if_match_class []
	Header class for Suppress-Notify-If-Match header.
tag_typedef_t	siptag_suppress_notify_if_match
	Tag for Suppress-Notify-If-Match header object.
tag_typedef_t	siptag_suppress_notify_if_match_str
	Tag for string with Suppress-Notify-If-Match header value.

---

Detailed Description

The Suppress-Notify-If-Match header is used to suppress superfluous NOTIFY transactions.

Its syntax is defined in draft-niemi-sip-subnot-etags-01 as follows:

    Suppress-Notify-If-Match = "Suppress-Notify-If-Match" HCOLON entity-tag
    entity-tag               = token

The parsed Suppress-Notify-If-Match header is stored in sip_suppress_notify_if_match_t structure.

See also:

RFC 3265, draft-niemi-sip-subnot-etag-01

Since:

Experimental in 1.12.5, available if --enable-experimental configuration option is given. In order to use Suppress-Notify-If-Match header, initialize the SIP parser with, e.g., sip_update_default_mclass(sip_extend_mclass(NULL)).

Note:

The sip_t struct does not contain sip_suppress_notify_if_match field, but sip_suppress_notify_if_match() function should be used for accessing the Suppress-Notify-If-Match header structure.

---

Define Documentation

#define sip_suppress_notify_if_match

(

sip

)

Access a SIP Suppress-Notify-If-Match header structure sip_suppress_notify_if_match_t from sip_t.

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

#define SIP_SUPPRESS_NOTIFY_IF_MATCH_INIT

(

)

Initializer for structure sip_suppress_notify_if_match_t.

A static sip_suppress_notify_if_match_t structure for Suppress-Notify-If-Match header must be initialized with the SIP_SUPPRESS_NOTIFY_IF_MATCH_INIT() macro. For instance,

  sip_suppress_notify_if_match_t sip_suppress_notify_if_match = SIP_SUPPRESS_NOTIFY_IF_MATCH_INIT;

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

#define SIPTAG_SUPPRESS_NOTIFY_IF_MATCH

(

x

)

Tag list item for pointer to a Suppress-Notify-If-Match header structure sip_suppress_notify_if_match_t.

The SIPTAG_SUPPRESS_NOTIFY_IF_MATCH() macro is used to include a tag item with a pointer to a sip_suppress_notify_if_match_t structure in a tag list.

Parameters:

x

pointer to a sip_suppress_notify_if_match_t structure, or NULL.

The corresponding tag taking reference parameter is SIPTAG_SUPPRESS_NOTIFY_IF_MATCH_REF().

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

#define SIPTAG_SUPPRESS_NOTIFY_IF_MATCH_STR

(

s

)

Tag list item for string with Suppress-Notify-If-Match header value.

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

Parameters:

s

pointer to a string containing Suppress-Notify-If-Match header value, or NULL.

The string in SIPTAG_SUPPRESS_NOTIFY_IF_MATCH_STR() can be converted to a sip_suppress_notify_if_match_t header structure by giving the string s has second argument to function sip_suppress_notify_if_match_make().

The corresponding tag taking reference parameter is SIPTAG_SUPPRESS_NOTIFY_IF_MATCH_STR_REF().

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

---

Typedef Documentation

struct sip_suppress_notify_if_match_s sip_suppress_notify_if_match_t

The structure sip_suppress_notify_if_match_t contains representation of a SIP Suppress-Notify-If-Match header.

The sip_suppress_notify_if_match_t is defined as follows:

 typedef struct sip_suppress_notify_if_match_s
 {
   sip_common_t   snim_common[1]; // Common fragment info
   sip_error_t   *snim_next;      // Dummy link to next header
   char const    *snim_tag;       // entity-tag
 } sip_suppress_notify_if_match_t;

---

Function Documentation

int sip_is_suppress_notify_if_match

(

sip_header_t const *

header

)

[inline]

Test if header object is instance of sip_suppress_notify_if_match_t.

Check if the header class is an instance of Suppress-Notify-If-Match header object and return true (nonzero), otherwise return false (zero).

Parameters:

header

pointer to the header structure to be tested

Return values:

	1	(true) if the header is an instance of header suppress_notify_if_match
	0	(false) otherwise

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

sip_suppress_notify_if_match_t * sip_suppress_notify_if_match_copy	(	su_home_t *	home,
		sip_suppress_notify_if_match_t const *	hdr
	)			[inline]

Copy a list of Suppress-Notify-If-Match header header structures sip_suppress_notify_if_match_t.

The function sip_suppress_notify_if_match_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 list of header structure hdr.

Parameters:

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

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 hdr header, including the encoding of the old header, if present.

Example

   suppress_notify_if_match = sip_suppress_notify_if_match_copy(home, sip->sip_suppress_notify_if_match);

Returns:

A pointer to newly copied header structure, or NULL upon an error.

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

sip_suppress_notify_if_match_t * sip_suppress_notify_if_match_dup	(	su_home_t *	home,
		sip_suppress_notify_if_match_t const *	hdr
	)			[inline]

Duplicate a list of Suppress-Notify-If-Match header header structures sip_suppress_notify_if_match_t.

Duplicate 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

   suppress_notify_if_match = sip_suppress_notify_if_match_dup(home, sip->sip_suppress_notify_if_match);

Returns:

A pointer to the newly duplicated sip_suppress_notify_if_match_t header structure, or NULL upon an error.

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

sip_suppress_notify_if_match_t * sip_suppress_notify_if_match_format	(	su_home_t *	home,
		char const *	fmt,
			...
	)			[inline]

Make a Suppress-Notify-If-Match header from formatting result.

Make a new sip_suppress_notify_if_match_t 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 parses the formatting result to the structure sip_suppress_notify_if_match_t.

Parameters:

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

Returns:

A pointer to newly makes header structure, or NULL upon an error.

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

sip_suppress_notify_if_match_t* sip_suppress_notify_if_match_init

(

sip_suppress_notify_if_match_t

x[1]

)

[inline]

Initialize a structure sip_suppress_notify_if_match_t.

An sip_suppress_notify_if_match_t structure for Suppress-Notify-If-Match header can be initialized with the sip_suppress_notify_if_match_init() function/macro. For instance,

  sip_suppress_notify_if_match_t sip_suppress_notify_if_match;

  sip_suppress_notify_if_match_init(&sip_suppress_notify_if_match);

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

sip_suppress_notify_if_match_t * sip_suppress_notify_if_match_make	(	su_home_t *	home,
		char const *	s
	)			[inline]

Make a Suppress-Notify-If-Match header structure sip_suppress_notify_if_match_t.

The function sip_suppress_notify_if_match_make() makes a new sip_suppress_notify_if_match_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

Returns:

A pointer to newly maked sip_suppress_notify_if_match_t header structure, or NULL upon an error.

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.

---

Variable Documentation

msg_hclass_t sip_suppress_notify_if_match_class[]

Header class for Suppress-Notify-If-Match header.

The header class sip_suppress_notify_if_match_class defines how a SIP Suppress-Notify-If-Match header is parsed and printed. It also contains methods used by SIP parser and other functions to manipulate the sip_suppress_notify_if_match_t header structure.

Since:

New in

Experimental in 1.12.5, available if --enable-experimental configuration option is given.