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 Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved
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 When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
 SIP_CREATE_OKACK 3SIP "Jan 25, 2007"
 NAME
sip_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
appropriate 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(7) for descriptions of the following attributes:






ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Committed
MT-Level MT-Safe



 SEE ALSO

 libsip (3LIB)