Struct zng_task::http::StatusCode

pub struct StatusCode(/* private fields */);

An HTTP status code (status-code in RFC 7230 et al.).

Constants are provided for known status codes, including those in the IANA HTTP Status Code Registry.

Status code values in the range 100-999 (inclusive) are supported by this type. Values in the range 100-599 are semantically classified by the most significant digit. See StatusCode::is_success, etc. Values above 599 are unclassified but allowed for legacy compatibility, though their use is discouraged. Applications may interpret such values as protocol errors.

Examples

use http::StatusCode;

assert_eq!(StatusCode::from_u16(200).unwrap(), StatusCode::OK);
assert_eq!(StatusCode::NOT_FOUND.as_u16(), 404);
assert!(StatusCode::OK.is_success());

Implementations

impl StatusCode

pub fn from_u16(src: u16) -> Result<StatusCode, InvalidStatusCode>

Converts a u16 to a status code.

The function validates the correctness of the supplied u16. It must be greater or equal to 100 and less than 1000.

Example

use http::StatusCode;

let ok = StatusCode::from_u16(200).unwrap();
assert_eq!(ok, StatusCode::OK);

let err = StatusCode::from_u16(99);
assert!(err.is_err());

pub fn from_bytes(src: &[u8]) -> Result<StatusCode, InvalidStatusCode>

Converts a &u8 to a status code

pub fn as_u16(&self) -> u16

Returns the u16 corresponding to this StatusCode.

Note

This is the same as the From<StatusCode> implementation, but included as an inherent method because that implementation doesn’t appear in rustdocs, as well as a way to force the type instead of relying on inference.

Example

let status = http::StatusCode::OK;
assert_eq!(status.as_u16(), 200);

pub fn as_str(&self) -> &str

Returns a &str representation of the StatusCode

The return value only includes a numerical representation of the status code. The canonical reason is not included.

Example

let status = http::StatusCode::OK;
assert_eq!(status.as_str(), "200");

pub fn canonical_reason(&self) -> Option<&'static str>

Get the standardised reason-phrase for this status code.

This is mostly here for servers writing responses, but could potentially have application at other times.

The reason phrase is defined as being exclusively for human readers. You should avoid deriving any meaning from it at all costs.

Bear in mind also that in HTTP/2.0 and HTTP/3.0 the reason phrase is abolished from transmission, and so this canonical reason phrase really is the only reason phrase you’ll find.

Example

let status = http::StatusCode::OK;
assert_eq!(status.canonical_reason(), Some("OK"));

pub fn is_informational(&self) -> bool

Check if status is within 100-199.

pub fn is_success(&self) -> bool

Check if status is within 200-299.

pub fn is_redirection(&self) -> bool

Check if status is within 300-399.

pub fn is_client_error(&self) -> bool

Check if status is within 400-499.

pub fn is_server_error(&self) -> bool

Check if status is within 500-599.

impl StatusCode

pub const CONTINUE: StatusCode = _

100 Continue [RFC7231, Section 6.2.1]

pub const SWITCHING_PROTOCOLS: StatusCode = _

101 Switching Protocols [RFC7231, Section 6.2.2]

pub const PROCESSING: StatusCode = _

102 Processing [RFC2518]

pub const OK: StatusCode = _

200 OK [RFC7231, Section 6.3.1]

pub const CREATED: StatusCode = _

201 Created [RFC7231, Section 6.3.2]

pub const ACCEPTED: StatusCode = _

202 Accepted [RFC7231, Section 6.3.3]

pub const NON_AUTHORITATIVE_INFORMATION: StatusCode = _

203 Non-Authoritative Information [RFC7231, Section 6.3.4]

pub const NO_CONTENT: StatusCode = _

204 No Content [RFC7231, Section 6.3.5]

pub const RESET_CONTENT: StatusCode = _

205 Reset Content [RFC7231, Section 6.3.6]

pub const PARTIAL_CONTENT: StatusCode = _

206 Partial Content [RFC7233, Section 4.1]

pub const MULTI_STATUS: StatusCode = _

207 Multi-Status [RFC4918]

pub const ALREADY_REPORTED: StatusCode = _

208 Already Reported [RFC5842]

pub const IM_USED: StatusCode = _

226 IM Used [RFC3229]

pub const MULTIPLE_CHOICES: StatusCode = _

300 Multiple Choices [RFC7231, Section 6.4.1]

pub const MOVED_PERMANENTLY: StatusCode = _

301 Moved Permanently [RFC7231, Section 6.4.2]

pub const FOUND: StatusCode = _

302 Found [RFC7231, Section 6.4.3]

pub const SEE_OTHER: StatusCode = _

303 See Other [RFC7231, Section 6.4.4]

pub const NOT_MODIFIED: StatusCode = _

304 Not Modified [RFC7232, Section 4.1]

pub const USE_PROXY: StatusCode = _

305 Use Proxy [RFC7231, Section 6.4.5]

pub const TEMPORARY_REDIRECT: StatusCode = _

307 Temporary Redirect [RFC7231, Section 6.4.7]

pub const PERMANENT_REDIRECT: StatusCode = _

308 Permanent Redirect [RFC7238]

pub const BAD_REQUEST: StatusCode = _

400 Bad Request [RFC7231, Section 6.5.1]

pub const UNAUTHORIZED: StatusCode = _

401 Unauthorized [RFC7235, Section 3.1]

pub const PAYMENT_REQUIRED: StatusCode = _

402 Payment Required [RFC7231, Section 6.5.2]

pub const FORBIDDEN: StatusCode = _

403 Forbidden [RFC7231, Section 6.5.3]

pub const NOT_FOUND: StatusCode = _

404 Not Found [RFC7231, Section 6.5.4]

pub const METHOD_NOT_ALLOWED: StatusCode = _

405 Method Not Allowed [RFC7231, Section 6.5.5]

pub const NOT_ACCEPTABLE: StatusCode = _

406 Not Acceptable [RFC7231, Section 6.5.6]

pub const PROXY_AUTHENTICATION_REQUIRED: StatusCode = _

407 Proxy Authentication Required [RFC7235, Section 3.2]

pub const REQUEST_TIMEOUT: StatusCode = _

408 Request Timeout [RFC7231, Section 6.5.7]

pub const CONFLICT: StatusCode = _

409 Conflict [RFC7231, Section 6.5.8]

pub const GONE: StatusCode = _

410 Gone [RFC7231, Section 6.5.9]

pub const LENGTH_REQUIRED: StatusCode = _

411 Length Required [RFC7231, Section 6.5.10]

pub const PRECONDITION_FAILED: StatusCode = _

412 Precondition Failed [RFC7232, Section 4.2]

pub const PAYLOAD_TOO_LARGE: StatusCode = _

413 Payload Too Large [RFC7231, Section 6.5.11]

pub const URI_TOO_LONG: StatusCode = _

414 URI Too Long [RFC7231, Section 6.5.12]

pub const UNSUPPORTED_MEDIA_TYPE: StatusCode = _

415 Unsupported Media Type [RFC7231, Section 6.5.13]

pub const RANGE_NOT_SATISFIABLE: StatusCode = _

416 Range Not Satisfiable [RFC7233, Section 4.4]

pub const EXPECTATION_FAILED: StatusCode = _

417 Expectation Failed [RFC7231, Section 6.5.14]

pub const IM_A_TEAPOT: StatusCode = _

418 I’m a teapot [curiously not registered by IANA but RFC2324]

pub const MISDIRECTED_REQUEST: StatusCode = _

421 Misdirected Request RFC7540, Section 9.1.2

pub const UNPROCESSABLE_ENTITY: StatusCode = _

422 Unprocessable Entity [RFC4918]

pub const LOCKED: StatusCode = _

423 Locked [RFC4918]

pub const FAILED_DEPENDENCY: StatusCode = _

424 Failed Dependency [RFC4918]

pub const UPGRADE_REQUIRED: StatusCode = _

426 Upgrade Required [RFC7231, Section 6.5.15]

pub const PRECONDITION_REQUIRED: StatusCode = _

428 Precondition Required [RFC6585]

pub const TOO_MANY_REQUESTS: StatusCode = _

429 Too Many Requests [RFC6585]

pub const REQUEST_HEADER_FIELDS_TOO_LARGE: StatusCode = _

431 Request Header Fields Too Large [RFC6585]

pub const UNAVAILABLE_FOR_LEGAL_REASONS: StatusCode = _

451 Unavailable For Legal Reasons [RFC7725]

pub const INTERNAL_SERVER_ERROR: StatusCode = _

500 Internal Server Error [RFC7231, Section 6.6.1]

pub const NOT_IMPLEMENTED: StatusCode = _

501 Not Implemented [RFC7231, Section 6.6.2]

pub const BAD_GATEWAY: StatusCode = _

502 Bad Gateway [RFC7231, Section 6.6.3]

pub const SERVICE_UNAVAILABLE: StatusCode = _

503 Service Unavailable [RFC7231, Section 6.6.4]

pub const GATEWAY_TIMEOUT: StatusCode = _

504 Gateway Timeout [RFC7231, Section 6.6.5]

pub const HTTP_VERSION_NOT_SUPPORTED: StatusCode = _

505 HTTP Version Not Supported [RFC7231, Section 6.6.6]

pub const VARIANT_ALSO_NEGOTIATES: StatusCode = _

506 Variant Also Negotiates [RFC2295]

pub const INSUFFICIENT_STORAGE: StatusCode = _

507 Insufficient Storage [RFC4918]

pub const LOOP_DETECTED: StatusCode = _

508 Loop Detected [RFC5842]

pub const NOT_EXTENDED: StatusCode = _

510 Not Extended [RFC2774]

pub const NETWORK_AUTHENTICATION_REQUIRED: StatusCode = _

511 Network Authentication Required [RFC6585]

Trait Implementations

impl Clone for StatusCode

fn clone(&self) -> StatusCode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StatusCode

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

Formats the value using the given formatter.

impl Default for StatusCode

fn default() -> StatusCode

Returns the “default value” for a type.

impl Display for StatusCode

Formats the status code, including the canonical reason.

Example

assert_eq!(format!("{}", StatusCode::OK), "200 OK");

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

Formats the value using the given formatter.

impl<'a> From<&'a StatusCode> for StatusCode

fn from(t: &'a StatusCode) -> StatusCode

Converts to this type from the input type.

impl FromStr for StatusCode

type Err = InvalidStatusCode

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<StatusCode, InvalidStatusCode>

Parses a string s to return a value of this type.

impl Hash for StatusCode

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

where __H: Hasher,

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 StatusCode

fn cmp(&self, other: &StatusCode) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq<u16> for StatusCode

fn eq(&self, other: &u16) -> 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 PartialEq for StatusCode

fn eq(&self, other: &StatusCode) -> 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 StatusCode

fn partial_cmp(&self, other: &StatusCode) -> 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<'a> TryFrom<&'a [u8]> for StatusCode

type Error = InvalidStatusCode

The type returned in the event of a conversion error.

fn try_from( t: &'a [u8], ) -> Result<StatusCode, <StatusCode as TryFrom<&'a [u8]>>::Error>

Performs the conversion.

impl<'a> TryFrom<&'a str> for StatusCode

type Error = InvalidStatusCode

The type returned in the event of a conversion error.

fn try_from( t: &'a str, ) -> Result<StatusCode, <StatusCode as TryFrom<&'a str>>::Error>

Performs the conversion.

impl TryFrom<u16> for StatusCode

type Error = InvalidStatusCode

The type returned in the event of a conversion error.

fn try_from(t: u16) -> Result<StatusCode, <StatusCode as TryFrom<u16>>::Error>

Performs the conversion.

impl Copy for StatusCode

impl Eq for StatusCode

impl StructuralPartialEq for StatusCode