Enum Error 

pub enum Error {
    Connect {
        address: SocketAddr,
        source: Arc<Error>,
    },
    Negotiation(NegotiationError),
    Closed,
    Busy,
    Cancelled,
    Abandoned,
    InvalidOptions,
    Unsupported(&'static str),
    Pool(Error),
    Protocol(Arc<Error>),
    Io(Arc<Error>),
    Body(BodyError),
}

A client failure. A request body or interim observer that fails is reported as Body, never as a Protocol error. A response body that fails with a client error reports it as the source of a BodyError, or as the original BodyError when a request body failed.

Negotiation, Pool, Protocol and Body wrap another layer’s error transparently: they display it and report its source. Connect and Io describe the failure and report the I/O error as their source. A cause chain therefore never repeats a message.

Variants

Connect

Opening the transport to address failed, including the TLS handshake and server verification, so no request was sent. The source can also be a local failure, such as exhausted file descriptors or an invalid TLS server name. Cancellation while connecting, including a caller’s deadline, is Cancelled. A rejected protocol selection is Negotiation, which also precedes any request. With TLS 1.3, a server that rejects the client after the handshake is reported by the first exchange instead.

Fields

address: SocketAddr

source: Arc<Error>

Negotiation(NegotiationError)

Closed

Busy

Cancelled

Abandoned

InvalidOptions

Unsupported(&'static str)

Pool(Error)

Protocol(Arc<Error>)

Io(Arc<Error>)

Body(BodyError)

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 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<BodyError> for Error

fn from(error: BodyError) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(error: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(error: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(error: Error) -> Self

Converts to this type from the input type.

impl From<NegotiationError> for Error

fn from(error: NegotiationError) -> Self

Converts to this type from the input type.

impl From<OperationError> for Error

fn from(error: OperationError) -> Self

Converts to this type from the input type.