Enum EncryptionLevel 

#[non_exhaustive]
#[repr(u8)]
pub enum EncryptionLevel {
    Off = 0,
    On = 1,
    NotSupported = 2,
    Required = 3,
    ClientCertAuth = 128,
    ClientCertOn = 129,
    ClientCertReq = 131,
}

Encryption level for connection.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Off = 0

Encryption is off.

On = 1

Encryption is on.

NotSupported = 2

Encryption is not supported.

Required = 3

Encryption is required.

ClientCertAuth = 128

Client certificate authentication, base level off (ENCRYPT_CLIENT_CERT | ENCRYPT_OFF, TDS 8.0+).

ENCRYPT_CLIENT_CERT (0x80) is a flag OR’d onto the base encryption level, so it appears combined with on/required as well (see Self::ClientCertOn / Self::ClientCertReq).

ClientCertOn = 129

Client certificate authentication with encryption on (ENCRYPT_CLIENT_CERT | ENCRYPT_ON, TDS 8.0+).

ClientCertReq = 131

Client certificate authentication with encryption required (ENCRYPT_CLIENT_CERT | ENCRYPT_REQ, TDS 8.0+).

Implementations

impl EncryptionLevel

pub fn from_u8(value: u8) -> Result<Self, ProtocolError>

Create from a raw byte value.

Returns an error for an unrecognized byte rather than defaulting to Self::Off: a garbage or unexpected encryption byte from the server must not be silently read as “encryption off”, which would mask a downgrade or a malformed PRELOGIN response (#278). Mirrors the fallible PreLoginOption::from_u8.

pub const fn is_required(&self) -> bool

Check if encryption is required.

Trait Implementations

impl Clone for EncryptionLevel

fn clone(&self) -> EncryptionLevel

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for EncryptionLevel

impl Debug for EncryptionLevel

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for EncryptionLevel

fn default() -> EncryptionLevel

Returns the “default value” for a type.

impl Eq for EncryptionLevel

impl PartialEq for EncryptionLevel

fn eq(&self, other: &EncryptionLevel) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for EncryptionLevel