101 switch di protocolli

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Il codice di risposta (response) HTTP 101 Switching Protocols indica il protocollo cui il server sta passando, come richiesto dal client che ha inviato il messaggio includendo Upgrade nell'header della richiesta.

In questa risposta il server include l'header Upgrade che indica qual'è il protocollo adottato. Il processo è descritto in dettaglio nell'articolo Protocol upgrade mechanism.

Status

101 Switching Protocols

Esempi

Switching protocols può essere usato con WebSockets.

HTTP/1.1 101 Switching Protocols
Upgrade: websocket 
Connection: Upgrade

Specifiche

Specification Title
RFC 7231, section 6.2.2: 101 Switching Protocol Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

Vedi anche

Argomenti correlati
  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
    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 [Translate]
    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
    65. Server-Timing [Translate]
    66. Set-Cookie [Translate]
    67. Set-Cookie2 [Translate]
    68. SourceMap [Translate]
    69. Strict-Transport-Security
    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
  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 [Translate]
    2. 101 switch di protocolli
    3. 200 OK
    4. 201 Created [Translate]
    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 [Translate]
    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 [Translate]
    21. 405 Method Not Allowed [Translate]
    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 [Translate]
    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. Errore: CORS header 'Access-Control-Allow-Origin' missing
    4. Reason: CORS header ‘Origin’ cannot be added [Translate]
    5. Reason: CORS preflight channel did not succeed [Translate]
    6. Motivo : Richiesta CORS Fallita
    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]