pub fn authenticate(
    input: &[u8]
) -> IResult<&[u8], (AuthMechanism<'_>, Option<Cow<'_, [u8]>>)>
Expand description

authenticate = "AUTHENTICATE" SP auth-type *(CRLF base64) (edited)

                                           Added by SASL-IR
                                           |
                                           vvvvvvvvvvvvvvvvvvv
authenticate = "AUTHENTICATE" SP auth-type [SP (base64 / "=")] *(CRLF base64)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
               |
               This is parsed here.
               CRLF is parsed by upper command parser.