Require Header
[SIP Headers]

Collaboration diagram for Require Header:


Detailed Description

The Require header is used by clients to tell user agent servers about options that the client expects the server to support in order to properly process the request.

Its syntax is defined in [S10.35] as follows:

    Require       =  "Require" HCOLON option-tag *(COMMA option-tag)


Defines

#define sip_require(sip)
 Access a sip_require_t from sip_t.
#define SIP_REQUIRE_INIT()
 Initializer for structure sip_require_t.
#define SIPTAG_REQUIRE(x)
 Tag list item for pointer to a Require header structure.
#define SIPTAG_REQUIRE_REF(x)
 Tag list item for reference to a a Require header pointer.
#define SIPTAG_REQUIRE_STR(s)
 Tag list item for string with Require header value.
#define SIPTAG_REQUIRE_STR_REF(x)
 Tag list item for reference to a a Require header string.

Typedefs

typedef msg_list_t sip_require_t
 The structure sip_require_t contains representation of an Require header.

Enumerator

 sip_require_hash
 @

Hash of Require header.


Functions

SOFIAPUBFUN int sip_require_d (su_home_t *, msg_header_t *, char *s, int slen)
 Parse a Require header.
SOFIAPUBFUN int sip_require_e (char b[], int bsiz, msg_header_t const *h, int flags)
 Print a Require header.
sip_require_tsip_require_init (sip_require_t x[1])
 Initialize a structure sip_require_t.
int sip_is_require (sip_header_t const *header)
 Test if header object is instance of sip_require_t.
sip_require_tsip_require_dup (su_home_t *home, sip_require_t const *hdr))
 Duplicate (deep copy) sip_require_t.
sip_require_tsip_require_copy (su_home_t *home, sip_require_t const *hdr))
 Copy a sip_require_t header structure.
sip_require_tsip_require_make (su_home_t *home, char const *s))
 Make a header structure sip_require_t.
sip_require_tsip_require_format (su_home_t *home, char const *fmt,...)))
 Make a Require header from formatting result.

Variables

tag_typedef_t siptag_require
 Tag for Require header object.
tag_typedef_t siptag_require_str
 Tag for string with Require header value.
msg_hclass_t sip_require_class []
 Header class for SIP Require header.


Define Documentation

 
#define SIP_REQUIRE_INIT (  ) 

Initializer for structure sip_require_t.

A static sip_require_t structure must be initialized. The SIP_REQUIRE_INIT() macro provides initialization value. For instance,

#define SIPTAG_REQUIRE (  ) 

Tag list item for pointer to a Require header structure.

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

Parameters:
x pointer to a sip_require_t header structure, or NULL.
The corresponding tag taking reference parameter is SIPTAG_REQUIRE_REF().

#define SIPTAG_REQUIRE_STR (  ) 

Tag list item for string with Require header value.

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

Parameters:
s pointer to a string containing sip_require_t value, or NULL.
The string in SIPTAG_REQUIRE_STR() can be converted to a sip_require_t header structure by giving the string s has second argument to function sip_require_make().

The corresponding tag taking reference parameter is SIPTAG_REQUIRE_STR_REF().


Typedef Documentation

struct msg_list_s sip_require_t

The structure sip_require_t contains representation of an Require header.

The sip_require_t is defined as follows:

 typedef struct msg_list_s
 {
   msg_common_t       k_common[1];  // Common fragment info
   msg_list_t        *k_next;         // Link to next header
   msg_param_t       *k_items;      // List of items
 } sip_require_t;


Enumerator Documentation

sip_require_hash

@

Hash of Require header.


Function Documentation

int sip_is_require ( sip_header_t const *  header  )  [inline]

Test if header object is instance of sip_require_t.

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

Parameters:
header pointer to the header structure to be tested
Returns:
The function sip_is_require() returns true (nonzero) if the header object is an instance of header require and false (zero) otherwise.

sip_require_t * sip_require_copy ( su_home_t home,
sip_require_t const *  hdr 
) [inline]

Copy a sip_require_t header structure.

The function sip_require_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 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
   require = sip_require_copy(home, sip->sip_require);
Returns:
The function sip_require_copy() returns a pointer to newly copied header structure, or NULL upon an error.

sip_require_t * sip_require_dup ( su_home_t home,
sip_require_t const *  hdr 
) [inline]

Duplicate (deep copy) sip_require_t.

The function sip_require_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
   require = sip_require_dup(home, sip->sip_require);
Returns:
The function sip_require_dup() returns a pointer to the newly duplicated sip_require_t header structure, or NULL upon an error.

sip_require_t * sip_require_format ( su_home_t home,
char const *  fmt,
  ... 
) [inline]

Make a Require header from formatting result.

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

sip_require_t* sip_require_init ( sip_require_t  x[1]  )  [inline]

Initialize a structure sip_require_t.

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

  sip_require_t sip_require;
 
  sip_require_init(&sip_require);

sip_require_t * sip_require_make ( su_home_t home,
char const *  s 
) [inline]

Make a header structure sip_require_t.

The function sip_require_make() makes a new sip_require_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 sip_header_make().
Returns:
The function sip_require_make() returns a pointer to newly maked sip_require_t header structure, or NULL upon an error.


Variable Documentation

msg_hclass_t sip_require_class[]

Header class for SIP Require header.

The header class sip_require_class defines how a SIP Require header is parsed and printed. It also contains methods used by SIP parser and other functions to manipulate the sip_require_t header structure.


Sofia-SIP 1.12.1 - Copyright (C) 2006 Nokia Corporation. All rights reserved. Licensed under the terms of the GNU Lesser General Public License.