Enum Error 

pub enum Error {
    WriteZero,
    InvalidPid,
    InvalidQos(u8),
    InvalidConnectReturnCode(u8),
    InvalidProtocol(String, u8),
    InvalidHeader,
    InvalidLength,
    InvalidString(Utf8Error),
    IoError(ErrorKind, String),
}

Errors returned by encode() and decode().

Variants

WriteZero

Not enough space in the write buffer.

It is the caller’s responsiblity to pass a big enough buffer to encode().

InvalidPid

Tried to encode or decode a ProcessIdentifier==0.

InvalidQos(u8)

Tried to decode a QoS > 2.

InvalidConnectReturnCode(u8)

Tried to decode a ConnectReturnCode > 5.

InvalidProtocol(String, u8)

Tried to decode an unknown protocol.

InvalidHeader

Tried to decode an invalid fixed header (packet type, flags, or remaining_length).

InvalidLength

Trying to encode/decode an invalid length.

The difference with WriteZero/UnexpectedEof is that it refers to an invalid/corrupt length rather than a buffer size issue.

InvalidString(Utf8Error)

Trying to decode a non-utf8 string.

IoError(ErrorKind, String)

Catch-all error when converting from std::io::Error.

Note: Only available when std is available. You’ll hopefully never see this.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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, f: &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(err: Error) -> IoError

Converts to this type from the input type.

impl From<Error> for Error

fn from(err: IoError) -> Error

Converts to this type from the input type.

impl PartialEq for Error

fn eq(&self, other: &Error) -> 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 Eq for Error

impl StructuralPartialEq for Error