added port and address constants

src/main.rs

@@ -131,6 +131,7 @@ fn main() {
 
             // request lidar data
             //thread::sleep(time::Duration::new(3,0));    
+            let _ = stream.write_all("\x02sRN LMDscandata\x03"); 
             let stream_write_response = stream.write(&[65 as u8, 66 as u8]);
             println!("mapper wrote {:?} to stream.", stream_write_response);