Enum HeaderError 

#[non_exhaustive]
pub enum HeaderError {
    Reserved {
        key: String,
    },
    EmptyKey,
    ControlCharacterInKey {
        key: String,
    },
    ControlCharacterInValue {
        key: String,
    },
    KeyTooLong {
        len: usize,
    },
    ValueTooLong {
        len: usize,
    },
    TooManyHeaders {
        limit: usize,
    },
}

Headers::insert failures.

use reliar_core::{HeaderError, Headers};

let mut headers = Headers::default();
let err = headers.insert("reliar-anything", "nope").unwrap_err();
assert!(matches!(err, HeaderError::Reserved { .. }));

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.

Reserved

The key starts with the reserved reliar- prefix (case-insensitive).

Fields

key: String

The rejected key.

EmptyKey

The key was empty.

ControlCharacterInKey

The key contained a control character (including CR/LF — a header-injection surface).

Fields

key: String

The rejected key.

ControlCharacterInValue

The value for this key contained a control character (including CR/LF). The value itself is never carried on the error — it may be a secret; the key is, so the caller can tell which header was rejected.

Fields

key: String

The key whose value was rejected.

KeyTooLong

The key exceeded Headers::MAX_KEY_LEN.

Fields

len: usize

The key’s actual length in bytes.

ValueTooLong

The value exceeded Headers::MAX_VALUE_LEN.

Fields

len: usize

The value’s actual length in bytes.

TooManyHeaders

Inserting a new key would exceed Headers::MAX_COUNT.

Fields

limit: usize

The configured limit.

Trait Implementations

impl Clone for HeaderError

fn clone(&self) -> HeaderError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HeaderError

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

Formats the value using the given formatter.

impl Display for HeaderError

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

Formats the value using the given formatter.

impl Eq for HeaderError

impl Error for HeaderError

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 PartialEq for HeaderError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HeaderError