opensolaris man page for sip_branchid

sip_branchid(3SIP)				   Session Initiation Protocol Library Functions				sip_branchid(3SIP)

NAME
       sip_branchid - generate a RFC 3261 complaint branch ID

SYNOPSIS
       cc [ flag ... ] file ... -lsip [ library ... ]
       #include <sip.h>

       char *sip_branchid(sip_msg_t sip_msg);

DESCRIPTION
       The sip_branchid() function can be used to generate a value for the branch parameter for a VIA header. The returned string is prefixed with
       z9hG4bK to conform to RFC 3261. If sip_msg is null or sip_msg does not have a VIA header, a random value is generated. Otherwise, the value
       is  generated  using  the MD5 hash of the VIA, FROM, CALL-ID, CSEQ headers and the URI from the request line. The caller is responsible for
       freeing the returned string.

RETURN VALUES
       The sip_branchid() function returns a string on success and NULL on failure.

       The value of errno is not changed by these calls in the event of an error.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

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

SEE ALSO
       libsip(3LIB)

SunOS 5.11							    25 Jan 2007 						sip_branchid(3SIP)