from rtt_server.c:110
static const struct service_driver rtt_service_driver = {
.name = "rtt",
.new_connection_during_keep_alive_handler = NULL,
.new_connection_handler = rtt_new_connection,
.input_handler = rtt_input,
.connection_closed_handler = rtt_connection_closed,
.keep_client_alive_handler = NULL,
};