SIP_GET_HEADER_VALUE(3SIP) Session Initiation Protocol Library Functions
NAME
sip_get_header_value, sip_get_next_value - get a SIP header value
SYNOPSIS
cc [
flag ... ]
file ...
-lsip [
library ... ]
#include <sip.h>
const struct sip_value *sip_get_header_value (
const struct sip_header *sip_header,
int *error);
const struct sip_value *sip_get_next_value (
sip_header_value_t old_value,
int *error);
DESCRIPTION
The
sip_get_header_value() function returns the first valid value
from
SIP header
sip_header.
The
sip_get_next_value() function returns the next valid value
following the
SIP value
old_value.
RETURN VALUES
These functions return the queried value on success and
NULL on
failure.
The value of
errno is not changed by these calls in the event of an
error.
ERRORS
If the error is non-null, one of the following values is set:
EINVAL If any of the required input is
NULL or if the specified
SIP header value is marked deleted.
EPROTO If the returned
SIP header value is invalid (i.e. the
parser encountered errors when parsing the value).
On success, the value of the location pointed to by
error is set to
0.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
SEE ALSO
libsip(3LIB) January 25, 2007 SIP_GET_HEADER_VALUE(3SIP)
