[Serusers] Search trough status line for specific reason phrase

[Josip Djuricic]

Dear,

is there any way to search inside Status-Line of response message?

I have strange b2bua that always returns SIP 500 just with different reason
phrase.

I need to match on them so that I can rewrite failure messages.

I thought about something like this:

failure_route[1] {

        if (t_check_status("500")) {
        #here I need to search trough status line for specific reasons, but
have no idea how to do that
                if (search("^Specific message")) {
                        t_reply("480", "Temporarily Unavailable");
                        break;
                }
        }
}

Thank you

J.