Enum ResolveError 

#[non_exhaustive]
pub enum ResolveError {
    Timeout(Duration),
    Lookup(Error),
    PrivateAddress {
        host: String,
        addr: IpAddr,
    },
}

Error returned by resolve_and_validate when a hostname cannot be safely resolved.

Callers map this into their own error type — it carries enough context (the timeout, the underlying I/O error, or the offending address) to build a user-facing message.

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.

Timeout(Duration)

DNS resolution did not complete within the lookup timeout.

Lookup(Error)

The DNS lookup itself failed (NXDOMAIN, network error, etc.).

PrivateAddress

A resolved address falls in a private/loopback/link-local range.

Fields

host: String

The hostname that was being resolved.

addr: IpAddr

The rejected private/loopback address.

Trait Implementations

impl Debug for ResolveError

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

Formats the value using the given formatter.

impl Display for ResolveError

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

Formats the value using the given formatter.

impl Error for ResolveError

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.