Enum Error

pub enum Error {
    InvalidName(String, &'static str),
    TemporaryError(Box<dyn StdError + Send + Sync>),
    NameNotFound,
    NoDefaultPort,
}

A generic name resolution error

It’s designed to provide basic abstraction over error types and also provide as much information as possible by carrying original error

Variants

InvalidName(String, &'static str)

Couldn’t parse a name before resolution

It’s expected that this error is permanent and is a failure of validating user input or the name in the configuration is invalid, but it’s possible that some resolver have very specific requirements for names, so you might want to change resolver too.

TemporaryError(Box<dyn StdError + Send + Sync>)

Temporary name resolution error

This means either name server returned this kind of error or we couldn’t connect to a name server itself. It’s safe to assume that you can retry name resolution in a moment

NameNotFound

We have sucessfully done name resolution but there is no such name

NoDefaultPort

The target resolver can only resolve host names and no default port is specified

Implementations

impl Error

pub fn into_io(self) -> IoError

Wraps the error into std::io::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, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

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 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<Void> for Error

fn from(v: Void) -> Error

Converts to this type from the input type.