sip_create_OKack(Session Initiation Protocol Library Funsip_create_OKack(3SIP)NAMEsip_create_OKack - create an ACK request for a final response
SYNOPSIS
cc [ flag ... ] file ... -lsip [ library ... ]
#include <sip.h>
int sip_create_OKack(sip_msg_t response,
sip_msg_t ack_msg, char *transport,
char *sent_by, int sent_by_port,
char *via_params);
DESCRIPTION
The sip_create_OKack() function constructs an ACK request in ack_msg
for the final 2XX SIP response. The request line is created using the
URI in the CONTACT header from the response. The SIP-Version in the
request line is "2.0". The VIA header for the ACK request is created
using transport, sent_by, sent_by_port (if non-zero), and via_params
(if non-null). The following headers are copied to ack_msg from
response:
FROM
TO
CALL-ID
MAX_FORWARDS
The CSEQ header is created using the method as ACK and the sequence
number from the CSEQ header in response.
RETURN VALUES
The sip_create_OKack() function returns 0 on success and the appropri‐
ate error value in case of failure.
The value of errno is not changed by these calls in the event of an
error.
ERRORS
On failure, the sip_create_OKack() function could return one of the
following errors:
EINVAL If mandatory input is not provided or if the input is
invalid.
The sip_create_OKack() function can return this error if it
does not find a CONTACT header or if it is unable to obtain
the URI from the CONTACT header for the request line.
ENOTSUP If the input SIP message cannot be modified.
ENOMEM If memory allocation fails when creating the
request/response line or when creating headers in the ACK
request.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Stable │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOlibsip(3SIP)SunOS 5.10 20 Mar 2007 sip_create_OKack(3SIP)
