chap_response
static void chap_response (chap *, int, u_char *, int);
chap_response(_this, 1, "OK", 2);
chap_response(_this, 0, pkt, lpkt);
chap_response(_this, 0, pkt, lpkt);
chap_response(_this, 1, pkt, lpkt);
chap_response(_this, 1, "OK", 2);
chap_response(_this, 1, success.str, sizeof(success.str));