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  1. Tecnologia Web para desenvolvedores
  2. HTTP
  3. Reference
  4. Cdigos de status de respostas HTTP
  5. 502 Bad Gateway
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502 Bad Gateway

O cdigo de erro HTTP 502 Bad Gateway retornado pelo servidor indica que ele, enquanto atuando como um servidor intermedirio (gateway ou proxy), recebeu uma resposta invlida do servidor para o qual a requisio foi encaminhada (upstream server).

Nota: Um Gateway pode se referir a coisas diferentes na rede e um erro 502 geralmente no algo que voc possa corrigir, mas requer uma correo por parte do servidor web ou dos proxies atravs dos quais voc est tentando obter acesso.

In this article

Status

502 Bad Gateway

Especificaes

Especificao Ttulo
RFC 7231, sesso 6.6.3: 502 Bad Gateway Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

Compatibilidade com navegadores

As informaes mostradas acima foram extradas do GitHub do MDN (https://github.com/mdn/browser-compat-data).

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This page was last modified on 7 de jul. de 2025 by MDN contributors.

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  1. HTTP
  2. Guides
  3. Uma viso geral do HTTP
  4. Evolution of HTTP
  5. Uma tpica sesso HTTP
  6. Mensagens HTTP
  7. MIME types
    1. Lista Incompleta de tipos MIME
  8. Compresso em HTTP
  9. HTTP caching
  10. Autenticao HTTP
  11. Cookies HTTP
  12. Redirecionamentos em HTTP
  13. Conditional requests
  14. Range requests
  15. Client hints
  16. User-Agent reduction
  17. Compression Dictionary Transport
  18. Network Error Logging
  19. Negociao de contedo
    1. Lista de valores padres de Accept
  20. Browser detection using the UA string
  21. Gerenciamento de Conexo em HTTP/1.x
  22. Protocol upgrade mechanism
  23. Proxy servers and tunneling
    1. Proxy Auto-Configuration (PAC) file
  24. Security and privacy
    1. HTTP Observatory
    2. Deixando seu site seguro
    3. Permissions Policy
    4. Cross-Origin Resource Policy (CORP)
    5. IFrame credentialless
    6. Fetch metadata
    7. Cross-Origin Resource Sharing (CORS)
    8. CORS errors
      1. Reason: CORS disabled
      2. Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz'
      3. Reason: CORS header 'Access-Control-Allow-Origin' missing
      4. Reason: CORS header 'Origin' cannot be added
      5. Reason: CORS preflight channel did not succeed
      6. Razo: A requisio CORS no foi bem sucedida
      7. Reason: CORS request external redirect not allowed
      8. Reason: CORS request not HTTP
      9. Reason: Credential is not supported if the CORS header Access-Control-Allow-Origin is *
      10. Reason: Did not find method in CORS header 'Access-Control-Allow-Methods'
      11. Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials'
      12. Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers'
      13. Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods'
      14. Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channel
      15. Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed
    9. Utilizando Polticas de Segurana de Contedo
      1. Errors and warnings
  25. Reference
  26. HTTP headers
    1. Accept
    2. Accept-CH
    3. Accept-Encoding
    4. Accept-Language
    5. Accept-Patch
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    7. Accept-Ranges
    8. Access-Control-Allow-Credentials
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  28. HTTP response status codes
    1. 100 Continue
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    5. 200 OK
    6. 201 Created
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    15. 300 Multiple Choices
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    33. 411 Length Required
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    53. 502 Bad Gateway
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    55. 504 Gateway Timeout
    56. 505 HTTP Version Not Supported
    57. 506 Variant Also Negotiates
    58. 507 Insufficient Storage
    59. 508 Loop Detected
    60. 510 Not Extended
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  29. CSP directives
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    20. script-src
    21. script-src-attr
    22. script-src-elem
    23. style-src
    24. style-src-attr
    25. style-src-elem
    26. trusted-types
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    28. worker-src
  30. Permissions-Policy directives
    1. accelerometer
    2. ambient-light-sensor
    3. aria-notify
    4. attribution-reporting
    5. autoplay
    6. bluetooth
    7. browsing-topics
    8. camera
    9. captured-surface-control
    10. ch-ua-high-entropy-values
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    13. deferred-fetch
    14. deferred-fetch-minimal
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    18. gamepad
    19. geolocation
    20. gyroscope
    21. hid
    22. identity-credentials-get
    23. idle-detection
    24. language-detector
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    30. magnetometer
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    39. publickey-credentials-create
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    41. screen-wake-lock
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    43. speaker-selection
    44. storage-access
    45. summarizer
    46. translator
    47. usb
    48. web-share
    49. window-management
    50. xr-spatial-tracking
  31. HTTP resources and specifications
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