Function ri_protocol_manager_send 

#[unsafe(no_mangle)]
pub extern "C" fn ri_protocol_manager_send(
    manager: *mut CRiProtocolManager,
    target: *const c_char,
    data: *const c_char,
    data_len: usize,
    out_response: *mut *mut c_char,
    out_len: *mut usize,
) -> c_int