17     type Error = E;  typedef
19     fn write(&mut self, byte: u8) -> Result<(), Self::Error> {  in write()
23     fn write_all(&mut self, buf: &[u8]) -> Result<(), Self::Error> {  in write_all()
27     fn flush(&mut self) -> Result<(), Self::Error> {  in flush()
31     fn on_session_start(&mut self) -> Result<(), Self::Error> {  in on_session_start()
37     type Error = E;  typedef
39     fn write(&mut self, byte: u8) -> Result<(), Self::Error> {  in write()
43     fn write_all(&mut self, buf: &[u8]) -> Result<(), Self::Error> {  in write_all()
47     fn flush(&mut self) -> Result<(), Self::Error> {  in flush()
51     fn on_session_start(&mut self) -> Result<(), Self::Error> {  in on_session_start()
57     fn read(&mut self) -> Result<u8, Self::Error> {  in read()
61     fn peek(&mut self) -> Result<Option<u8>, Self::Error> {  in peek()