Enum Error 

pub enum Error {
    BadFrameSize,
    TooMuchPadding,
    InvalidSettingValue,
    InvalidInitialWindowSize,
    InvalidWindowUpdateValue,
    InvalidPayloadLength,
    InvalidPayloadAckSettings,
    InvalidStreamId,
    MalformedMessage,
    InvalidDependencyId,
    Hpack(DecoderError),
    ShortBuffer {
        needed: usize,
        got: usize,
    },
    ReservedStreamIdBit,
}

Available on crate feature http only.

Errors that can occur during parsing an HTTP/2 frame.

Variants

BadFrameSize

A length value other than 8 was set on a PING message.

TooMuchPadding

The padding length was larger than the frame-header-specified length of the payload.

InvalidSettingValue

An invalid setting value was provided

InvalidInitialWindowSize

A SETTINGS_INITIAL_WINDOW_SIZE value above 2^31-1 was received.

RFC 9113 §6.5.2 specifies that this MUST be treated as a FLOW_CONTROL_ERROR, distinct from a generic PROTOCOL_ERROR.

InvalidWindowUpdateValue

An invalid window update value

InvalidPayloadLength

The payload length specified by the frame header was not the value necessary for the specific frame type.

InvalidPayloadAckSettings

Received a payload with an ACK settings frame

InvalidStreamId

An invalid stream identifier was provided.

This is returned if a SETTINGS or PING frame is received with a stream identifier other than zero.

MalformedMessage

A request or response is malformed.

InvalidDependencyId

An invalid stream dependency ID was provided

This is returned if a HEADERS or PRIORITY frame is received with an invalid stream identifier.

Hpack(DecoderError)

Failed to perform HPACK decoding

ShortBuffer

The input buffer was too short to parse the requested frame piece.

Returned by Head::parse, StreamId::parse, and Setting::load when their byte slice is shorter than the format mandates.

Fields

needed: usize

Minimum number of bytes the parser needed.

got: usize

Number of bytes actually available.

ReservedStreamIdBit

A raw stream id had the reserved most-significant bit set.

RFC 9113 §5.1.1 reserves the high bit of the stream id and requires receivers to ignore it on the wire; senders MUST NOT set it. Returned by StreamId::try_from(u32).

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<(), Error>

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Eq for Error

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<DecoderError> for Error

fn from(src: DecoderError) -> 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 StructuralPartialEq for Error