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6 .TH SIP_GET_NUM_VIA 3SIP "Jan 23, 2007"
8 sip_get_num_via, sip_get_branchid \- get VIA header specific attributes
12 \fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lsip\fR [ \fIlibrary\fR ... ]
15 \fBint\fR \fIsip_get_num_via\fR(\fBsip_msg_t\fR \fIsip_msg\fR,
16 \fBint *\fR\fIerror\fR);
21 \fBchar *\fR\fIsip_get_branchid\fR(\fBsip_msg_t\fR \fIsip_msg\fR,
22 \fBint *\fR\fIerror\fR);
28 The \fBsip_get_num_via()\fR function returns the number of \fBVIA\fR headers in
29 the \fBSIP\fR message \fIsip_msg\fR.
32 The \fBsip_get_branchid()\fR function returns the branch ID value from the
33 topmost \fBVIA\fR header. The caller is responsible for freeing the returned
38 The \fBsip_get_num_via()\fR function returns the number of \fBVIA\fR headers on
42 The \fBsip_get_branchid()\fR function returns the branch ID on success and
43 \fBNULL\fR on failure.
46 The value of \fBerrno\fR is not changed by these calls in the event of an
51 If the error is non-null, one of the following values is set:
58 The \fIsip_msg\fR is \fBNULL\fR.
67 For the \fIsip_get_branchid\fR function, there is no \fBVIA\fR header or the
68 \fBVIA\fR header has no branch parameter.
77 For the \fIsip_sip_get_trans.3sipget_branchid\fR function, the \fBVIA\fR value
78 is invalid. The parser encountered an error or errors while parsing the
88 For the \fIsip_get_branchid\fR function, there is an error in allocating memory
94 On success, the value of the location pointed to by \fIerror\fR is set to
99 See \fBattributes\fR(5) for descriptions of the following attributes:
107 ATTRIBUTE TYPE ATTRIBUTE VALUE
109 Interface Stability Committed