RFC 6585 – Additional HTTP Status Codes

If you’ve missed it like I did, RFC 6885 has been published recently.  It introduces four additional status codes for the HTTP protocol.  The codes are:

  • 428 Precondition Required
  • 429 Too Many Requests
  • 431 Request Header Fields Too Large
  • 511 Network Authentication Required

Here is a blog post that gives a nice summary of purpose for each of the new status codes.

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