Note that although there is a small similarity between this authentication protocol and the cvs protocol, they are separate. The authentication is successful. The client proceeds with the cvs protocol itself. The authentication fails. After sending this response, the server may close the connection.
E text Provide a message for the user.
After this reponse, the authentication protocol continues with another response. The authentication fails. After sending this response, the server may close the connection. The code is a code describing why it failed, intended for computer consumption. The text should be supplied to the user.