417 Expectation Failed

Кодът за състояние на грешка в HTTP 417 Expectation Failed (Очакванията се провалиха) указва, че очакваното състояние, упоменато като стойност в полето от заглавието на заявката Expect, не може да бъде удовлетворено.

Вижте Expect за повече подробности.

Състояние

417 Expectation Failed

Спецификации

Specification Title
RFC 7231, section 6.5.14: 417 Expectation Failed Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

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