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HTTP status codes as a Swift enum.
/// This is a list of Hypertext Transfer Protocol (HTTP) response status codes.
/// It includes codes from IETF internet standards, other IETF RFCs, other specifications, and some additional commonly used codes.
/// The first digit of the status code specifies one of five classes of response; an HTTP client must recognise these five classes at a minimum.
enum HTTPStatusCode: Int, Error {
/// The response class representation of status codes, these get grouped by their first digit.
enum ResponseType {
/// - informational: This class of status code indicates a provisional response, consisting only of the Status-Line and optional headers, and is terminated by an empty line.
case informational
/// - success: This class of status codes indicates the action requested by the client was received, understood, accepted, and processed successfully.
case success
/// - redirection: This class of status code indicates the client must take additional action to complete the request.
case redirection
/// - clientError: This class of status code is intended for situations in which the client seems to have erred.
case clientError
/// - serverError: This class of status code indicates the server failed to fulfill an apparently valid request.
case serverError
/// - undefined: The class of the status code cannot be resolved.
case undefined
// Informational - 1xx
/// - continue: The server has received the request headers and the client should proceed to send the request body.
case `continue` = 100
/// - switchingProtocols: The requester has asked the server to switch protocols and the server has agreed to do so.
case switchingProtocols = 101
/// - processing: This code indicates that the server has received and is processing the request, but no response is available yet.
case processing = 102
// Success - 2xx
/// - ok: Standard response for successful HTTP requests.
case ok = 200
/// - created: The request has been fulfilled, resulting in the creation of a new resource.
case created = 201
/// - accepted: The request has been accepted for processing, but the processing has not been completed.
case accepted = 202
/// - nonAuthoritativeInformation: The server is a transforming proxy (e.g. a Web accelerator) that received a 200 OK from its origin, but is returning a modified version of the origin's response.
case nonAuthoritativeInformation = 203
/// - noContent: The server successfully processed the request and is not returning any content.
case noContent = 204
/// - resetContent: The server successfully processed the request, but is not returning any content.
case resetContent = 205
/// - partialContent: The server is delivering only part of the resource (byte serving) due to a range header sent by the client.
case partialContent = 206
/// - multiStatus: The message body that follows is an XML message and can contain a number of separate response codes, depending on how many sub-requests were made.
case multiStatus = 207
/// - alreadyReported: The members of a DAV binding have already been enumerated in a previous reply to this request, and are not being included again.
case alreadyReported = 208
/// - IMUsed: The server has fulfilled a request for the resource, and the response is a representation of the result of one or more instance-manipulations applied to the current instance.
case IMUsed = 226
// Redirection - 3xx
/// - multipleChoices: Indicates multiple options for the resource from which the client may choose
case multipleChoices = 300
/// - movedPermanently: This and all future requests should be directed to the given URI.
case movedPermanently = 301
/// - found: The resource was found.
case found = 302
/// - seeOther: The response to the request can be found under another URI using a GET method.
case seeOther = 303
/// - notModified: Indicates that the resource has not been modified since the version specified by the request headers If-Modified-Since or If-None-Match.
case notModified = 304
/// - useProxy: The requested resource is available only through a proxy, the address for which is provided in the response.
case useProxy = 305
/// - switchProxy: No longer used. Originally meant "Subsequent requests should use the specified proxy.
case switchProxy = 306
/// - temporaryRedirect: The request should be repeated with another URI.
case temporaryRedirect = 307
/// - permenantRedirect: The request and all future requests should be repeated using another URI.
case permenantRedirect = 308
// Client Error - 4xx
/// - badRequest: The server cannot or will not process the request due to an apparent client error.
case badRequest = 400
/// - unauthorized: Similar to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided.
case unauthorized = 401
/// - paymentRequired: The content available on the server requires payment.
case paymentRequired = 402
/// - forbidden: The request was a valid request, but the server is refusing to respond to it.
case forbidden = 403
/// - notFound: The requested resource could not be found but may be available in the future.
case notFound = 404
/// - methodNotAllowed: A request method is not supported for the requested resource. e.g. a GET request on a form which requires data to be presented via POST
case methodNotAllowed = 405
/// - notAcceptable: The requested resource is capable of generating only content not acceptable according to the Accept headers sent in the request.
case notAcceptable = 406
/// - proxyAuthenticationRequired: The client must first authenticate itself with the proxy.
case proxyAuthenticationRequired = 407
/// - requestTimeout: The server timed out waiting for the request.
case requestTimeout = 408
/// - conflict: Indicates that the request could not be processed because of conflict in the request, such as an edit conflict between multiple simultaneous updates.
case conflict = 409
/// - gone: Indicates that the resource requested is no longer available and will not be available again.
case gone = 410
/// - lengthRequired: The request did not specify the length of its content, which is required by the requested resource.
case lengthRequired = 411
/// - preconditionFailed: The server does not meet one of the preconditions that the requester put on the request.
case preconditionFailed = 412
/// - payloadTooLarge: The request is larger than the server is willing or able to process.
case payloadTooLarge = 413
/// - URITooLong: The URI provided was too long for the server to process.
case URITooLong = 414
/// - unsupportedMediaType: The request entity has a media type which the server or resource does not support.
case unsupportedMediaType = 415
/// - rangeNotSatisfiable: The client has asked for a portion of the file (byte serving), but the server cannot supply that portion.
case rangeNotSatisfiable = 416
/// - expectationFailed: The server cannot meet the requirements of the Expect request-header field.
case expectationFailed = 417
/// - teapot: This HTTP status is used as an Easter egg in some websites.
case teapot = 418
/// - misdirectedRequest: The request was directed at a server that is not able to produce a response.
case misdirectedRequest = 421
/// - unprocessableEntity: The request was well-formed but was unable to be followed due to semantic errors.
case unprocessableEntity = 422
/// - locked: The resource that is being accessed is locked.
case locked = 423
/// - failedDependency: The request failed due to failure of a previous request (e.g., a PROPPATCH).
case failedDependency = 424
/// - upgradeRequired: The client should switch to a different protocol such as TLS/1.0, given in the Upgrade header field.
case upgradeRequired = 426
/// - preconditionRequired: The origin server requires the request to be conditional.
case preconditionRequired = 428
/// - tooManyRequests: The user has sent too many requests in a given amount of time.
case tooManyRequests = 429
/// - requestHeaderFieldsTooLarge: The server is unwilling to process the request because either an individual header field, or all the header fields collectively, are too large.
case requestHeaderFieldsTooLarge = 431
/// - noResponse: Used to indicate that the server has returned no information to the client and closed the connection.
case noResponse = 444
/// - unavailableForLegalReasons: A server operator has received a legal demand to deny access to a resource or to a set of resources that includes the requested resource.
case unavailableForLegalReasons = 451
/// - SSLCertificateError: An expansion of the 400 Bad Request response code, used when the client has provided an invalid client certificate.
case SSLCertificateError = 495
/// - SSLCertificateRequired: An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided.
case SSLCertificateRequired = 496
/// - HTTPRequestSentToHTTPSPort: An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests.
case HTTPRequestSentToHTTPSPort = 497
/// - clientClosedRequest: Used when the client has closed the request before the server could send a response.
case clientClosedRequest = 499
// Server Error - 5xx
/// - internalServerError: A generic error message, given when an unexpected condition was encountered and no more specific message is suitable.
case internalServerError = 500
/// - notImplemented: The server either does not recognize the request method, or it lacks the ability to fulfill the request.
case notImplemented = 501
/// - badGateway: The server was acting as a gateway or proxy and received an invalid response from the upstream server.
case badGateway = 502
/// - serviceUnavailable: The server is currently unavailable (because it is overloaded or down for maintenance). Generally, this is a temporary state.
case serviceUnavailable = 503
/// - gatewayTimeout: The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.
case gatewayTimeout = 504
/// - HTTPVersionNotSupported: The server does not support the HTTP protocol version used in the request.
case HTTPVersionNotSupported = 505
/// - variantAlsoNegotiates: Transparent content negotiation for the request results in a circular reference.
case variantAlsoNegotiates = 506
/// - insufficientStorage: The server is unable to store the representation needed to complete the request.
case insufficientStorage = 507
/// - loopDetected: The server detected an infinite loop while processing the request.
case loopDetected = 508
/// - notExtended: Further extensions to the request are required for the server to fulfill it.
case notExtended = 510
/// - networkAuthenticationRequired: The client needs to authenticate to gain network access.
case networkAuthenticationRequired = 511
/// The class (or group) which the status code belongs to.
var responseType: ResponseType {
switch self.rawValue {
case 100..<200:
return .informational
case 200..<300:
return .success
case 300..<400:
return .redirection
case 400..<500:
return .clientError
case 500..<600:
return .serverError
return .undefined
extension HTTPURLResponse {
var status: HTTPStatusCode? {
return HTTPStatusCode(rawValue: statusCode)
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