SIP Router: Core Cookbook

This tutorial collects the functions and parameters exported by SIP Router core to configuration file.

Keywords specific to SIP messages which can be used mainly in 'if' expressions.

The address family of the received SIP message. It is INET if the message was received over IPv4 or INET6 if the message was received over IPv6.

Exampe of usage:

    if (af==INET6) {
        log("Message received over IPv6 link\n");
    }

Values that can be used in 'if' expressions to check against Core Keywords

This keyword can be used to test whether the SIP packet was received over an IPv4 connection.

Example of usage:

    if (af==INET) {
        log("the SIP message was received over IPv4\n");
    }