teken_funcs_respond
teken_funcs_respond(t, response, sizeof response - 1);
teken_funcs_respond(t, response, len + 2);
teken_funcs_respond(t, response, len + 3);
teken_funcs_respond(t, response, sizeof response - 1);
teken_funcs_respond(t, response, sizeof response - 1);