syntax = "proto3";

package envoy.type;

option java_outer_classname = "HttpStatusProto";
option java_multiple_files = true;
option java_package = "io.envoyproxy.envoy.type";

import "validate/validate.proto";

// HTTP response codes supported in Envoy.
// For more details: https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
enum StatusCode {
  // Empty - This code not part of the HTTP status code specification, but it is needed for proto
  // `enum` type.
  Empty = 0;

  Continue = 100;

  OK = 200;
  Created = 201;
  Accepted = 202;
  NonAuthoritativeInformation = 203;
  NoContent = 204;
  ResetContent = 205;
  PartialContent = 206;
  MultiStatus = 207;
  AlreadyReported = 208;
  IMUsed = 226;

  MultipleChoices = 300;
  MovedPermanently = 301;
  Found = 302;
  SeeOther = 303;
  NotModified = 304;
  UseProxy = 305;
  TemporaryRedirect = 307;
  PermanentRedirect = 308;

  BadRequest = 400;
  Unauthorized = 401;
  PaymentRequired = 402;
  Forbidden = 403;
  NotFound = 404;
  MethodNotAllowed = 405;
  NotAcceptable = 406;
  ProxyAuthenticationRequired = 407;
  RequestTimeout = 408;
  Conflict = 409;
  Gone = 410;
  LengthRequired = 411;
  PreconditionFailed = 412;
  PayloadTooLarge = 413;
  URITooLong = 414;
  UnsupportedMediaType = 415;
  RangeNotSatisfiable = 416;
  ExpectationFailed = 417;
  MisdirectedRequest = 421;
  UnprocessableEntity = 422;
  Locked = 423;
  FailedDependency = 424;
  UpgradeRequired = 426;
  PreconditionRequired = 428;
  TooManyRequests = 429;
  RequestHeaderFieldsTooLarge = 431;

  InternalServerError = 500;
  NotImplemented = 501;
  BadGateway = 502;
  ServiceUnavailable = 503;
  GatewayTimeout = 504;
  HTTPVersionNotSupported = 505;
  VariantAlsoNegotiates = 506;
  InsufficientStorage = 507;
  LoopDetected = 508;
  NotExtended = 510;
  NetworkAuthenticationRequired = 511;
}

// HTTP status.
message HttpStatus {
  // Supplies HTTP response code.
  StatusCode code = 1
      [(validate.rules).enum = {not_in: [0]}, (validate.rules).enum.defined_only = true];
}