Enum Error 

#[non_exhaustive]
pub enum Error {
    BadRequest(&'static str),
    TooLarge(&'static str),
    Io(Error),
    Tls(String),
    Compress(String),
    Config(String),
    Acme(String),
}

Errors produced by the HTTP engine, the runtimes, and configuration loading.

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.

BadRequest(&'static str)

The peer sent a malformed request (bad request line, headers, or body framing). Carries a human-readable reason.

TooLarge(&'static str)

A request exceeded a configured limit (header bytes, body bytes, …).

Io(Error)

An I/O error from a socket or the filesystem.

Tls(String)

A TLS-layer error (handshake failure, decrypt error, …). Only produced when the tls feature is enabled.

Compress(String)

A compression-layer error. Only produced when the compress feature is enabled.

Config(String)

A configuration error (invalid TOML, missing file, bad value, …).

Acme(String)

An ACME certificate-management error (protocol, network, or CA error).

Trait Implementations

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(e: Error) -> Self

Converts to this type from the input type.