src/lib.rs:1125:5: replace udp_send_cmd -> io::Result<()> with Ok(())
src/lib.rs:1145:15: replace != with == in udp_recv_rp
src/lib.rs:1148:25: replace += with *= in udp_recv_rp
src/lib.rs:1150:35: replace == with != in udp_recv_rp
src/lib.rs:2723:9: replace Connection::get -> io::Result<Option<Item>> with Ok(None)
