Enum StatusClass 

#[non_exhaustive]
pub enum StatusClass {
    Informational,
    Successful,
    Redirection,
    ClientError,
    ServerError,
}

HTTP ステータスコードのクラス分類 — RFC 9110 Section 15 準拠。

分類表

バリアント	範囲	RFC 9110
Informational	100..=199	§15.2
Successful	200..=299	§15.3
Redirection	300..=399	§15.4
ClientError	400..=499	§15.5
ServerError	500..=599	§15.6

範囲外 (0..=99, 600..=65535) の値は from_status_code で None を返す。 本ライブラリ内では Response と ResponseHead の構築時に 100..=599 のバリデーションが効いているため、これらの型を経由する限り 範囲外の値が到達することはない。

RFC 9110 Section 15 (lines 6828-6832) は範囲外の status code を受信した クライアントに対して「5xx (Server Error) として扱うべき (SHOULD)」と勧告している。 from_status_code の None は「分類不能」を表現しており、この SHOULD 勧告に 従ったフォールバック (例: unwrap_or(StatusClass::ServerError)) は API 利用者の責務。

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.

Informational

1xx Informational — RFC 9110 Section 15.2

Successful

2xx Successful — RFC 9110 Section 15.3

Redirection

3xx Redirection — RFC 9110 Section 15.4

ClientError

4xx Client Error — RFC 9110 Section 15.5

ServerError

5xx Server Error — RFC 9110 Section 15.6

Implementations

impl StatusClass

pub const fn from_status_code(code: u16) -> Option<Self>

u16 のステータスコードから StatusClass を生成する。

範囲外の値 (0..=99, 600..=65535) は None を返す。

Trait Implementations

impl Clone for StatusClass

fn clone(&self) -> StatusClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StatusClass

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

Formats the value using the given formatter.

impl Hash for StatusClass

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for StatusClass

fn cmp(&self, other: &StatusClass) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for StatusClass

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for StatusClass

fn partial_cmp(&self, other: &StatusClass) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for StatusClass

impl Eq for StatusClass

impl StructuralPartialEq for StatusClass