428 Precondition Required

Le code de statut de réponse HTTP 428 Precondition Required indique que le serveur requiert que la requête soit conditionnelle.

Généralement, cela signifie qu'il manque un en-tête de précondition, comme If-Match.

Lorsqu'un en-tête de précondition ne correspond pas à l'état du serveur, la réponse doit être 412 Precondition Failed.

Statut

428 Precondition Required

Spécifications

Spécification Titre
RFC 6585, section 3: 428 Precondition Required Additional HTTP Status Codes

Voir aussi

Sujets associés
  1. HTTP
  2. Guides:
  3. Resources and URIs
    1. Identifying resources on the Web
    2. Data URIs
    3. Introduction to MIME Types
    4. Complete list of MIME Types
    5. Choosing between www and non-www URLs
  4. HTTP guide
    1. Basics of HTTP
    2. Overview of HTTP
    3. Evolution of HTTP
    4. HTTP Messages
    5. A typical HTTP session
    6. Connection management in HTTP/1.x
    7. Protocol upgrade mechanism
  5. HTTP security
    1. Content Security Policy (CSP)
    2. HTTP Public Key Pinning (HPKP)
    3. HTTP Strict Transport Security (HSTS)
    4. Cookie security
    5. X-Content-Type-Options
    6. X-Frame-Options
    7. X-XSS-Protection
    8. Mozilla web security guidelines
    9. Mozilla Observatory
  6. HTTP access control (CORS)
  7. HTTP authentication
  8. HTTP caching
  9. HTTP compression
  10. HTTP conditional requests
  11. HTTP content negotiation
  12. HTTP cookies
  13. HTTP range requests
  14. HTTP redirects
  15. HTTP specifications
  16. Feature policy
  17. References:
  18. HTTP headers
    1. Accept
    2. Accept-Charset [Traduire]
    3. Accept-Encoding
    4. Accept-Language
    5. Accept-Ranges [Traduire]
    6. Access-Control-Allow-Credentials [Traduire]
    7. Access-Control-Allow-Headers [Traduire]
    8. Access-Control-Allow-Methods [Traduire]
    9. Access-Control-Allow-Origin
    10. Access-Control-Expose-Headers [Traduire]
    11. Access-Control-Max-Age [Traduire]
    12. Access-Control-Request-Headers
    13. Access-Control-Request-Method [Traduire]
    14. Age
    15. Allow [Traduire]
    16. Alt-Svc [Traduire]
    17. Authorization [Traduire]
    18. Cache-Control
    19. Clear-Site-Data [Traduire]
    20. Connection [Traduire]
    21. Content-Disposition
    22. Content-Encoding [Traduire]
    23. Content-Language
    24. Content-Length
    25. Content-Location [Traduire]
    26. Content-Range [Traduire]
    27. Politique de sécurité de contenu
    28. Content-Security-Policy-Report-Only [Traduire]
    29. Content-Type
    30. Cookie [Traduire]
    31. Cookie2 [Traduire]
    32. DNT
    33. Date
    34. ETag
    35. Early-Data [Traduire]
    36. Expect [Traduire]
    37. Expect-CT [Traduire]
    38. Expires
    39. Feature-Policy [Traduire]
    40. Forwarded [Traduire]
    41. From [Traduire]
    42. Host
    43. If-Match [Traduire]
    44. If-Modified-Since
    45. If-None-Match
    46. If-Range [Traduire]
    47. If-Unmodified-Since [Traduire]
    48. Index [Traduire]
    49. Keep-Alive
    50. Large-Allocation [Traduire]
    51. Last-Modified
    52. Location [Traduire]
    53. Origin
    54. Pragma
    55. Proxy-Authenticate [Traduire]
    56. Proxy-Authorization [Traduire]
    57. Public-Key-Pins [Traduire]
    58. Public-Key-Pins-Report-Only [Traduire]
    59. Range [Traduire]
    60. Referer
    61. Referrer-Policy [Traduire]
    62. Retry-After [Traduire]
    63. Sec-WebSocket-Accept [Traduire]
    64. Serveur
    65. Server-Timing [Traduire]
    66. Set-Cookie
    67. Set-Cookie2 [Traduire]
    68. SourceMap [Traduire]
    69. HTTP Strict Transport Security
    70. TE [Traduire]
    71. Timing-Allow-Origin [Traduire]
    72. Tk [Traduire]
    73. Trailer
    74. Transfer-Encoding [Traduire]
    75. Upgrade-Insecure-Requests [Traduire]
    76. User-Agent [Traduire]
    77. Vary
    78. Via [Traduire]
    79. WWW-Authenticate
    80. Warning [Traduire]
    81. X-Content-Type-Options [Traduire]
    82. X-DNS-Prefetch-Control [Traduire]
    83. X-Forwarded-For [Traduire]
    84. X-Forwarded-Host [Traduire]
    85. X-Forwarded-Proto [Traduire]
    86. X-Frame-Options
    87. X-XSS-Protection [Traduire]
  19. HTTP request methods
    1. CONNECT
    2. DELETE
    3. GET
    4. HEAD
    5. OPTIONS
    6. PATCH
    7. POST
    8. PUT
    9. TRACE [Traduire]
  20. HTTP response status codes
    1. 100 Continue
    2. 101 Switching Protocol
    3. 200 OK
    4. 201 Created
    5. 202 Accepted
    6. 203 Non-Authoritative Information
    7. 204 No Content
    8. 205 Reset Content
    9. 206 Partial Content
    10. 300 Multiple Choices
    11. 301 Moved Permanently
    12. 302 Found
    13. 303 See Other
    14. 304 Not Modified
    15. 307 Temporary Redirect
    16. 308 Permanent Redirect
    17. 400 Bad Request
    18. 401 Unauthorized
    19. 403 Forbidden
    20. 404 Not Found
    21. 405 Method Not Allowed
    22. 406 Not Acceptable
    23. 407 Proxy Authentication Required
    24. 408 Request Timeout
    25. 409 Conflict
    26. 410 Gone
    27. 411 Length Required
    28. 412 Precondition Failed
    29. 413 Payload Too Large
    30. 414 URI Too Long
    31. 415 Unsupported Media Type
    32. 416 Range Not Satisfiable
    33. 417 Expectation Failed
    34. 418 I'm a teapot (je suis une théière)
    35. 422 Unprocessable Entity
    36. 425 Too Early
    37. 426 Upgrade Required
    38. 428 Precondition Required
    39. 429 Too Many Requests
    40. 431 Request Header Fields Too Large
    41. 451 Unavailable For Legal Reasons
    42. 500 Internal Server Error
    43. 501 Not Implemented
    44. 502 Bad Gateway
    45. 503 Service Unavailable
    46. 504 Gateway Timeout
    47. 505 HTTP Version Not Supported
    48. 511 Network Authentication Required
  21. CSP directives
    1. CSP: base-uri [Traduire]
    2. CSP: block-all-mixed-content
    3. CSP: child-src [Traduire]
    4. CSP: connect-src [Traduire]
    5. CSP: default-src [Traduire]
    6. CSP: font-src [Traduire]
    7. CSP: form-action [Traduire]
    8. CSP: frame-ancestors [Traduire]
    9. CSP: frame-src [Traduire]
    10. CSP: img-src [Traduire]
    11. CSP: manifest-src [Traduire]
    12. CSP: media-src [Traduire]
    13. CSP: object-src [Traduire]
    14. CSP: plugin-types [Traduire]
    15. CSP: referrer [Traduire]
    16. CSP: report-uri [Traduire]
    17. CSP: require-sri-for [Traduire]
    18. CSP: sandbox [Traduire]
    19. CSP: script-src [Traduire]
    20. CSP: style-src [Traduire]
    21. CSP: upgrade-insecure-requests
    22. CSP: worker-src [Traduire]
    23. report-to [Traduire]
  22. CORS errors
    1. Raison: CORS désactiver
    2. Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz' [Traduire]
    3. Raison : l’en-tête CORS « Access-Control-Allow-Origin » est manquant.
    4. Reason: CORS header ‘Origin’ cannot be added [Traduire]
    5. Reason: CORS preflight channel did not succeed [Traduire]
    6. Raison: la requête CORS a échoué
    7. Reason: CORS request external redirect not allowed [Traduire]
    8. Reason: CORS request not HTTP [Traduire]
    9. Reason: Credential is not supported if the CORS header ‘Access-Control-Allow-Origin’ is ‘*’ [Traduire]
    10. Reason: Did not find method in CORS header ‘Access-Control-Allow-Methods’ [Traduire]
    11. Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed [Traduire]
    12. Reason: expected ‘true’ in CORS header ‘Access-Control-Allow-Credentials’ [Traduire]
    13. Reason: invalid token ‘xyz’ in CORS header ‘Access-Control-Allow-Headers’ [Traduire]
    14. Reason: invalid token ‘xyz’ in CORS header ‘Access-Control-Allow-Methods’ [Traduire]
    15. Reason: missing token ‘xyz’ in CORS header ‘Access-Control-Allow-Headers’ from CORS preflight channel [Traduire]
  23. Feature-Policy directives
    1. Feature-Policy: autoplay [Traduire]
    2. Feature-Policy: camera [Traduire]
    3. Feature-Policy: encrypted-media [Traduire]
    4. Feature-Policy: fullscreen [Traduire]
    5. Feature-Policy: geolocation [Traduire]
    6. Feature-Policy: microphone [Traduire]
    7. Feature-Policy: midi [Traduire]
    8. Feature-Policy: payment [Traduire]
    9. Feature-Policy: vr [Traduire]
    10. document-domain [Traduire]