pub unsafe extern "C" fn ddsi_conn_join_mc(
conn: ddsi_tran_conn_t,
srcip: *const nn_locator_t,
mcip: *const nn_locator_t,
interf: *const nn_interface,
) -> c_intpub unsafe extern "C" fn ddsi_conn_join_mc(
conn: ddsi_tran_conn_t,
srcip: *const nn_locator_t,
mcip: *const nn_locator_t,
interf: *const nn_interface,
) -> c_int