Enum Error 

pub enum Error {
    Io(Error),
    Protocol(MqttError),
    Refused(u8),
    Closed,
    Timeout(&'static str),
    Unexpected(&'static str),
    Unsupported(&'static str),
    SubscribeRefused(u8),
}

What went wrong.

Variants

Io(Error)

Protocol(MqttError)

Refused(u8)

The broker refused the connection (the CONNACK reason code).

Closed

The connection was closed by the broker (or the DISCONNECT packet came).

Timeout(&'static str)

No answer in time (what was awaited).

Unexpected(&'static str)

The broker answered with something that does not fit (what happened).

Unsupported(&'static str)

A feature this client does not have (publishing at QoS 2).

SubscribeRefused(u8)

The broker rejected a subscription.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<MqttError> for Error

fn from(source: MqttError) -> Self

Converts to this type from the input type.