Enum Error 

pub enum Error {
    InvalidMethod,
    InvalidTarget,
    InvalidVersion,
    VersionNotSupported,
    RequestLineTooLong,
    HeadTooLarge,
    TooManyHeaders,
    HeaderLineTooLong,
    InvalidHeaderName,
    InvalidHeaderValue,
    WhitespaceBeforeColon,
    ObsFold,
    BareCr,
    BareLf,
    MissingHost,
    DuplicateHost,
    InvalidHost,
    TeWithContentLength,
    DuplicateContentLength,
    InvalidContentLength,
    InvalidTransferEncoding,
    ChunkedNotFinal,
    UnsupportedTransferCoding,
    TransferEncodingHttp10,
    BodyTooLarge,
    ExpectationFailed,
    DuplicateUpgrade,
    InvalidChunkSize,
    ChunkSizeOverflow,
    InvalidChunkExtension,
    ChunkLineTooLong,
    MissingChunkCrlf,
    TrailersTooLarge,
    ForbiddenTrailer,
    UnexpectedEof,
    InvalidStatus,
    InvalidReason,
    FramingHeader,
}

Why a message was refused. Every error means the connection must close after the error response (if any) is sent.

Variants

InvalidMethod

The method is empty or has a byte outside tchar, or is not followed by one SP.

InvalidTarget

The request target has a forbidden byte, bad percent-encoding, or the wrong form for the method.

InvalidVersion

The version is not HTTP/ digit . digit, or the start line has extra bytes.

VersionNotSupported

A well-formed version other than 1.0 and 1.1.

RequestLineTooLong

The request line passed Limits::max_request_line.

HeadTooLarge

The head passed Limits::max_head.

TooManyHeaders

More than Limits::max_headers fields, or more than the header storage holds.

HeaderLineTooLong

A header line passed Limits::max_header_line.

InvalidHeaderName

A field name is empty or has a byte outside tchar.

InvalidHeaderValue

A field value has a control byte other than HTAB.

WhitespaceBeforeColon

Whitespace between a field name and the colon (RFC 9112 §5.1).

ObsFold

A line starting with whitespace: obs-fold, or whitespace after the start line.

BareCr

CR not followed by LF.

BareLf

LF not preceded by CR.

MissingHost

An HTTP/1.1 request without Host.

DuplicateHost

More than one Host.

InvalidHost

A Host value that is not uri-host [":" port].

TeWithContentLength

Both Transfer-Encoding and Content-Length.

DuplicateContentLength

More than one Content-Length value, equal or not.

InvalidContentLength

A Content-Length that is not 1*DIGIT within 64 bits.

InvalidTransferEncoding

A malformed Transfer-Encoding list (empty elements, non-token codings, parameters).

ChunkedNotFinal

Transfer-Encoding whose final coding is not chunked, or chunked twice.

UnsupportedTransferCoding

Codings before the final chunked (they are not implemented).

TransferEncodingHttp10

Transfer-Encoding in an HTTP/1.0 request.

BodyTooLarge

The body passed Limits::max_body.

ExpectationFailed

An Expect value other than 100-continue.

DuplicateUpgrade

A duplicate Upgrade field.

InvalidChunkSize

A chunk size that is not 1*HEXDIG.

ChunkSizeOverflow

A chunk size beyond 64 bits.

InvalidChunkExtension

A chunk extension that breaks the RFC 9112 §7.1.1 grammar.

ChunkLineTooLong

A chunk-size line longer than Limits::max_chunk_line.

MissingChunkCrlf

Chunk data not followed by CRLF.

TrailersTooLarge

The trailer section passed Limits::max_trailers.

ForbiddenTrailer

A trailer field that may not be a trailer (Content-Length, Transfer-Encoding, Host).

UnexpectedEof

The connection closed inside a body.

InvalidStatus

A status code that is not three digits from 100 to 599.

InvalidReason

A reason phrase with a control byte.

FramingHeader

A writer was asked to emit Content-Length or Transfer-Encoding as a plain field; use the framing methods instead.

Implementations

impl Error

pub fn status(self) -> u16

The response status for this error, when it happens on a request.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Error

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 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 PartialEq for Error

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Error