Enum Error 

#[non_exhaustive]
pub enum Error {
    Io(Error),
    MissingHostname,
    MissingPort,
    Connect(Error),
    Accept(Error),
    NoAddresses,
    Failover(Vec<Failure<Error>>),
}

Errors specific to the plain-TCP qmux transport.

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.

Io(Error)

The TCP socket failed to bind or connect, or the host failed to resolve. Not accept: a failed accept(2) is the listener’s own to classify and retry (see crate::accept).

MissingHostname

The tcp:// URL had no host.

MissingPort

The tcp:// URL had no port. Unlike https, there is no default.

Connect(Error)

The qmux handshake failed while dialing.

Accept(Error)

The qmux handshake failed while accepting.

NoAddresses

DNS resolved the host to no addresses at all.

Failover(Vec<Failure<Error>>)

Two or more addresses were raced and every attempt failed, each paired with its own error in dial order. All of them are kept: picking one to report would bury a refused port behind whichever address happened to be unroutable or to blackhole until its timeout. A host with a single address reports that error directly instead.

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, __formatter: &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

Available on crate feature tcp only.

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.