HTTP
Guides
Resources and URIs
HTTP guide
HTTP security
HTTP access control (CORS)
HTTP authentication
HTTP caching
HTTP compression
HTTP conditional requests
HTTP content negotiation
HTTP cookies
HTTP range requests
HTTP redirects
HTTP specifications
Permissions Policy
References
HTTP headers
HTTP request methods
HTTP response status codes
1. 100 Continue
2. 101 Switching Protocols
3. 102 Processing
4. 103 Early Hints
5. 200 OK
6. 201 Created
7. 202 Accepted
8. 203 Non-Authoritative Information
9. 204 No Content
10. 205 Reset Content
11. 206 Partial Content
12. 207 Multi-Status
13. 208 Already Reported
14. 226 IM Used
15. 300 Multiple Choices
16. 301 Moved Permanently
17. 302 Found
18. 303 See Other
19. 304 Not Modified
20. 307 Temporary Redirect
21. 308 Permanent Redirect
22. 400 Bad Request
23. 401 Unauthorized
24. 402 Payment Required
25. 403 Forbidden
26. 404 Not Found
27. 405 Method Not Allowed
28. 406 Not Acceptable
29. 407 Proxy Authentication Required
30. 408 Request Timeout
31. 409 Conflict
32. 410 Gone
33. 411 Length Required
34. 412 Precondition Failed
35. 413 Content Too Large
36. 414 URI Too Long
37. 415 Unsupported Media Type
38. 416 Range Not Satisfiable
39. 417 Expectation Failed
40. 418 I'm a teapot
41. 421 Misdirected Request
42. 422 Unprocessable Content
43. 423 Locked
44. 424 Failed Dependency
45. 425 Too Early
46. 426 Upgrade Required
47. 428 Precondition Required
48. 429 Too Many Requests
49. 431 Request Header Fields Too Large
50. 451 Unavailable For Legal Reasons
51. 500 Internal Server Error
52. 501 Not Implemented
53. 502 Bad Gateway
54. 503 Service Unavailable
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
61. 511 Network Authentication Required
CSP directives
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. Reason: CORS request did not succeed
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
Permissions-Policy directives

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