502 Bad Gateway

Le code de réponse HTTP d'erreur serveur 502 Bad Gateway indique que le serveur, agissant comme une passerelle ou un proxy, a reçu une réponse invalide depuis le serveur en amont.

Une passerelle peut faire référence à différents éléments en réseaux et une erreur 502 est habituellement quelque chose que vous ne pouvez pas corriger, mais qui nécessite une correction sur le serveur web ou le proxy par lequel vous passez pour y accéder.

Statut

502 Bad Gateway

Spécifications

Spécification Titre
RFC 7231, section 6.6.3: 502 Bad Gateway Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

Compatibilité des navigateurs

No compatibility data found. Please contribute data for "http/status" (depth: 502) to the MDN compatibility data repository.

Voir aussi

Dernière modification :

, by MDN contributors
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
    3. Accept-Encoding
    4. Accept-Language
    5. Accept-Patch [Traduire]
    6. Accept-Ranges [Traduire]
    7. Access-Control-Allow-Credentials
    8. Access-Control-Allow-Headers [Traduire]
    9. Access-Control-Allow-Methods
    10. Access-Control-Allow-Origin
    11. Access-Control-Expose-Headers [Traduire]
    12. Access-Control-Max-Age [Traduire]
    13. Access-Control-Request-Headers
    14. Access-Control-Request-Method [Traduire]
    15. Age
    16. Allow
    17. Alt-Svc [Traduire]
    18. Authorization [Traduire]
    19. Cache-Control
    20. Clear-Site-Data [Traduire]
    21. Connection [Traduire]
    22. Content-Disposition
    23. Content-Encoding [Traduire]
    24. Content-Language
    25. Content-Length
    26. Content-Location [Traduire]
    27. Content-Range [Traduire]
    28. Politique de sécurité de contenu
    29. Content-Security-Policy-Report-Only [Traduire]
    30. Content-Type
    31. Cookie [Traduire]
    32. Cookie2 [Traduire]
    33. Cross-Origin-Resource-Policy [Traduire]
    34. DNT
    35. Date
    36. Digest [Traduire]
    37. ETag
    38. Early-Data [Traduire]
    39. Expect [Traduire]
    40. Expect-CT [Traduire]
    41. Expires
    42. Feature-Policy [Traduire]
    43. Forwarded [Traduire]
    44. From [Traduire]
    45. Host
    46. If-Match [Traduire]
    47. If-Modified-Since
    48. If-None-Match
    49. If-Range [Traduire]
    50. If-Unmodified-Since [Traduire]
    51. Index [Traduire]
    52. Keep-Alive
    53. Large-Allocation [Traduire]
    54. Last-Modified
    55. Link [Traduire]
    56. Location [Traduire]
    57. Origin
    58. Pragma
    59. Proxy-Authenticate [Traduire]
    60. Proxy-Authorization [Traduire]
    61. Public-Key-Pins [Traduire]
    62. Public-Key-Pins-Report-Only [Traduire]
    63. Range [Traduire]
    64. Referer
    65. Referrer-Policy [Traduire]
    66. Retry-After [Traduire]
    67. Save-Data [Traduire]
    68. Sec-WebSocket-Accept [Traduire]
    69. Serveur
    70. Server-Timing [Traduire]
    71. Set-Cookie
    72. Set-Cookie2 [Traduire]
    73. SourceMap [Traduire]
    74. HTTP Strict Transport Security
    75. TE [Traduire]
    76. Timing-Allow-Origin [Traduire]
    77. Tk [Traduire]
    78. Trailer
    79. Transfer-Encoding [Traduire]
    80. Upgrade-Insecure-Requests [Traduire]
    81. User-Agent [Traduire]
    82. Vary
    83. Via [Traduire]
    84. WWW-Authenticate
    85. Want-Digest [Traduire]
    86. Warning [Traduire]
    87. X-Content-Type-Options
    88. X-DNS-Prefetch-Control [Traduire]
    89. X-Forwarded-For [Traduire]
    90. X-Forwarded-Host [Traduire]
    91. X-Forwarded-Proto [Traduire]
    92. X-Frame-Options
    93. 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. 103 Early Hints
    4. 200 OK
    5. 201 Created
    6. 202 Accepted
    7. 203 Non-Authoritative Information
    8. 204 No Content
    9. 205 Reset Content
    10. 206 Partial Content
    11. 300 Multiple Choices
    12. 301 Moved Permanently
    13. 302 Found
    14. 303 See Other
    15. 304 Not Modified
    16. 307 Temporary Redirect
    17. 308 Permanent Redirect
    18. 400 Bad Request
    19. 401 Unauthorized
    20. 402 Payment Required
    21. 403 Forbidden
    22. 404 Not Found
    23. 405 Method Not Allowed
    24. 406 Not Acceptable
    25. 407 Proxy Authentication Required
    26. 408 Request Timeout
    27. 409 Conflict
    28. 410 Gone
    29. 411 Length Required
    30. 412 Precondition Failed
    31. 413 Payload Too Large
    32. 414 URI Too Long
    33. 415 Unsupported Media Type
    34. 416 Range Not Satisfiable
    35. 417 Expectation Failed
    36. 418 I'm a teapot (je suis une théière)
    37. 422 Unprocessable Entity
    38. 425 Too Early
    39. 426 Upgrade Required
    40. 428 Precondition Required
    41. 429 Too Many Requests
    42. 431 Request Header Fields Too Large
    43. 451 Unavailable For Legal Reasons
    44. 500 Internal Server Error
    45. 501 Not Implemented
    46. 502 Bad Gateway
    47. 503 Service Unavailable
    48. 504 Gateway Timeout
    49. 505 HTTP Version Not Supported
    50. 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: navigate-to [Traduire]
    14. CSP: object-src [Traduire]
    15. CSP: plugin-types [Traduire]
    16. CSP: prefetch-src [Traduire]
    17. CSP: referrer [Traduire]
    18. CSP: report-to [Traduire]
    19. CSP: report-uri [Traduire]
    20. CSP: require-sri-for [Traduire]
    21. CSP: sandbox [Traduire]
    22. CSP: script-src [Traduire]
    23. CSP: script-src-attr [Traduire]
    24. CSP: script-src-elem [Traduire]
    25. CSP: style-src [Traduire]
    26. CSP: style-src-attr [Traduire]
    27. CSP: style-src-elem [Traduire]
    28. CSP: trusted-types [Traduire]
    29. CSP: upgrade-insecure-requests
    30. CSP: worker-src [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
    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: accelerometer [Traduire]
    2. Feature-Policy: ambient-light-sensor [Traduire]
    3. Feature-Policy: autoplay [Traduire]
    4. Feature-Policy: camera [Traduire]
    5. Feature-Policy: display-capture [Traduire]
    6. Feature-Policy: document-domain [Traduire]
    7. Feature-Policy: encrypted-media [Traduire]
    8. Feature-Policy: fullscreen [Traduire]
    9. Feature-Policy: geolocation [Traduire]
    10. Feature-Policy: gyroscope [Traduire]
    11. Feature-Policy: layout-animations [Traduire]
    12. Feature-Policy: legacy-image-formats [Traduire]
    13. Feature-Policy: magnetometer [Traduire]
    14. Feature-Policy: microphone [Traduire]
    15. Feature-Policy: midi [Traduire]
    16. Feature-Policy: oversized-images [Traduire]
    17. Feature-Policy: payment [Traduire]
    18. Feature-Policy: picture-in-picture [Traduire]
    19. Feature-Policy: speaker [Traduire]
    20. Feature-Policy: sync-xhr [Traduire]
    21. Feature-Policy: unoptimized-images [Traduire]
    22. Feature-Policy: unsized-media [Traduire]
    23. Feature-Policy: usb [Traduire]
    24. Feature-Policy: vibrate [Traduire]
    25. Feature-Policy: vr [Traduire]
    26. Feature-Policy: wake-lock [Traduire]
    27. Feature-Policy: webauthn [Traduire]
    28. Feature-Policy: xr [Traduire]