Enum Error 

#[non_exhaustive]
pub enum Error {
    Transport(String),
    Decode(DecodeError),
    Version,
    RequiredExtension,
    UnexpectedStream,
    BoundsExceeded(BoundsExceeded),
    Duplicate,
    Cancel,
    Timeout,
    Old,
    App(u16),
    NotFound,
    WrongSize,
    ProtocolViolation,
    Unauthorized,
    UnexpectedMessage,
    Unsupported,
    Encode(EncodeError),
    TooManyParameters,
    InvalidRole,
    UnknownAlpn(String),
    Dropped,
    Closed,
    CacheFull,
    Remote(u32),
}

A list of possible errors that can occur during the session.

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.

Transport(String)

Decode(DecodeError)

Version

RequiredExtension

A required extension was not present

UnexpectedStream

An unexpected stream type was received

BoundsExceeded(BoundsExceeded)

Duplicate

A duplicate ID was used

Cancel

Timeout

It took too long to open or transmit a stream.

Old

The group is older than the latest group and dropped.

App(u16)

NotFound

WrongSize

ProtocolViolation

Unauthorized

UnexpectedMessage

Unsupported

Encode(EncodeError)

TooManyParameters

InvalidRole

UnknownAlpn(String)

Dropped

Closed

CacheFull

The cached frame has been evicted due to the group size limit.

Remote(u32)

A remote error received via a stream/session reset code.

Implementations

impl Error

pub fn to_code(&self) -> u32

An integer code that is sent over the wire.

pub fn from_transport(err: impl Error) -> Self

Convert a transport error into an Error, decoding stream reset codes.

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, __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 Error for Error

fn session_error(&self) -> Option<(u32, String)>

Returns the error code and reason if this was an application error.

fn stream_error(&self) -> Option<u32>

Returns the error code if this was a stream error.

impl From<BoundsExceeded> for Error

fn from(source: BoundsExceeded) -> Self

Converts to this type from the input type.

impl From<DecodeError> for Error

fn from(source: DecodeError) -> Self

Converts to this type from the input type.

impl From<EncodeError> for Error

fn from(source: EncodeError) -> Self

Converts to this type from the input type.