sip_register_sentSessionPInitiation Protocol Librarysip_register_sent_by(3SIP)NAME
sip_register_sent_by, sip_unregister_sent_by, sip_unregis‐
ter_all_sent_by - allows registering and un-registering sent-by values
SYNOPSIS
cc [ flag ... ] file ... -lsip [ library ... ]
#include <sip.h>
int sip_register_sent_by(char *val);
void sip_unregister_sent_by(char *val);
void sip_unregister_all_sent_by(int *error);
DESCRIPTION
The sip_register_sent_by() function can be used to register a list of
hostnames or IP addresses that the application may add to the VIA head‐
ers. The val is a comma separated list of such sent-by values. If any
value is registered using sip_register_sent_by(), the SIP stack vali‐
dates incoming responses to check if the sent-by parameter in the top‐
most VIA header is part of the registered list. If the check fails, the
response is dropped. If there are no sent-by values registered, there
is no check done on incoming responses.
The sip_unregister_sent_by() and sip_unregister_all_sent_by() functions
are used to un-register sent-by values. The val for sip_unregis‐
ter_sent_by() is a comma separated list of sent-by values that need to
be un-registered. sip_unregister_all_sent_by() un-registers all the
values that have been registered.
RETURN VALUES
The sip_register_sent_by() function returns 0 on success and the appro‐
priate error value 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 │Stable │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOlibsip(3SIP)SunOS 5.10 20 Mar 2007 sip_register_sent_by(3SIP)
