Struct h2::Reason

pub struct Reason(_);

HTTP/2.0 error codes.

Error codes are used in RST_STREAM and GOAWAY frames to convey the reasons for the stream or connection error. For example, SendStream::send_reset takes a Reason argument. Also, the Error type may contain a Reason.

Error codes share a common code space. Some error codes apply only to streams, others apply only to connections, and others may apply to either. See [RFC 7540] for more information.

See Error Codes in the spec.

Methods

impl Reason

pub const NO_ERROR: Reason

NO_ERROR: Reason = Reason(0)

The associated condition is not a result of an error.

For example, a GOAWAY might include this code to indicate graceful shutdown of a connection.

pub const PROTOCOL_ERROR: Reason

PROTOCOL_ERROR: Reason = Reason(1)

The endpoint detected an unspecific protocol error.

This error is for use when a more specific error code is not available.

pub const INTERNAL_ERROR: Reason

INTERNAL_ERROR: Reason = Reason(2)

The endpoint encountered an unexpected internal error.

pub const FLOW_CONTROL_ERROR: Reason

FLOW_CONTROL_ERROR: Reason = Reason(3)

The endpoint detected that its peer violated the flow-control protocol.

pub const SETTINGS_TIMEOUT: Reason

SETTINGS_TIMEOUT: Reason = Reason(4)

The endpoint sent a SETTINGS frame but did not receive a response in a timely manner.

pub const STREAM_CLOSED: Reason

STREAM_CLOSED: Reason = Reason(5)

The endpoint received a frame after a stream was half-closed.

pub const FRAME_SIZE_ERROR: Reason

FRAME_SIZE_ERROR: Reason = Reason(6)

The endpoint received a frame with an invalid size.

pub const REFUSED_STREAM: Reason

REFUSED_STREAM: Reason = Reason(7)

The endpoint refused the stream prior to performing any application processing.

pub const CANCEL: Reason

CANCEL: Reason = Reason(8)

Used by the endpoint to indicate that the stream is no longer needed.

pub const COMPRESSION_ERROR: Reason

COMPRESSION_ERROR: Reason = Reason(9)

The endpoint is unable to maintain the header compression context for the connection.

pub const CONNECT_ERROR: Reason

CONNECT_ERROR: Reason = Reason(10)

The connection established in response to a CONNECT request was reset or abnormally closed.

pub const ENHANCE_YOUR_CALM: Reason

ENHANCE_YOUR_CALM: Reason = Reason(11)

The endpoint detected that its peer is exhibiting a behavior that might be generating excessive load.

pub const INADEQUATE_SECURITY: Reason

INADEQUATE_SECURITY: Reason = Reason(12)

The underlying transport has properties that do not meet minimum security requirements.

pub const HTTP_1_1_REQUIRED: Reason

HTTP_1_1_REQUIRED: Reason = Reason(13)

The endpoint requires that HTTP/1.1 be used instead of HTTP/2.

pub fn description(&self) -> &str

Get a string description of the error code.

Trait Implementations

impl From<Reason> for Error

fn from(src: Reason) -> Error

Performs the conversion.

impl PartialEq for Reason

fn eq(&self, __arg_0: &Reason) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Reason) -> bool

This method tests for !=.

impl Eq for Reason

impl Clone for Reason

fn clone(&self) -> Reason

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Reason

impl From<u32> for Reason

fn from(src: u32) -> Reason

Performs the conversion.

impl From<Reason> for u32

fn from(src: Reason) -> u32

Performs the conversion.

impl Debug for Reason

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

Formats the value using the given formatter.

impl Display for Reason

fn fmt(&self, fmt: &mut Formatter) -> Result

Formats the value using the given formatter.