Enum Refused 

#[non_exhaustive]
pub enum Refused {
    ProtocolTooOld,
    PeerRejected,
    Retiring,
}

Why a server refused a connection during negotiation. A client handshake returns it inside an io::ErrorKind::ConnectionRefused error; read it with Refused::of. A server that closes without a reason, an older server included, still produces an ordinary I/O error.

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.

ProtocolTooOld

The client lacks a binary version or capability the server requires. The same client build cannot succeed against this server.

PeerRejected

The server’s peer policy rejected this client.

Retiring

The server is retiring. Read discovery again to find its successor.

Implementations

impl Refused

pub fn of(error: &Error) -> Option<Self>

The refusal inside an error from a client handshake, if the server sent one.

Trait Implementations

impl Clone for Refused

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 Refused

impl Debug for Refused

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

Formats the value using the given formatter.

impl Display for Refused

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

Formats the value using the given formatter.

impl Eq for Refused

impl Error for Refused

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<Refused> for Error

fn from(refused: Refused) -> Self

Converts to this type from the input type.

impl PartialEq for Refused

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Refused