Enum ConnectReturnCode 

#[repr(u8)]
pub enum ConnectReturnCode {
    Success = 0,
    UnacceptableProtocolVersion = 1,
    IdentifierRejected = 2,
    ServerUnavailable = 3,
    BadAuthData = 4,
    NotAuthorized = 5,
}

Represents the return codes for a connection attempt in the MQTT protocol.

The ConnectReturnCode enum is used in the ConnAck packet to indicate the result of a client’s connection request.

Variants

Success = 0

Connection Accepted

UnacceptableProtocolVersion = 1

The Server does not support the level of the MQTT protocol requested by the Client

IdentifierRejected = 2

The Client identifier is correct UTF-8 but not allowed by the Server

ServerUnavailable = 3

The Network Connection has been made but the MQTT service is unavailable

BadAuthData = 4

The data in the username or password is malformed

NotAuthorized = 5

The Client is not authorized to connect

Trait Implementations

impl Clone for ConnectReturnCode

fn clone(&self) -> ConnectReturnCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ConnectReturnCode

impl Debug for ConnectReturnCode

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

Formats the value using the given formatter.

impl Eq for ConnectReturnCode

impl From<ConnectReturnCode> for u8

fn from(value: ConnectReturnCode) -> Self

Converts a ConnectReturnCode into a u8 value.

impl PartialEq for ConnectReturnCode

fn eq(&self, other: &ConnectReturnCode) -> 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 ConnectReturnCode

impl TryFrom<u8> for ConnectReturnCode

fn try_from(value: u8) -> Result<Self, Self::Error>

Converts a u8 value into a ConnectReturnCode.

type Error = Error

The type returned in the event of a conversion error.