About1.
The status code element is a three-digit integer code giving the result of the attempt to understand and satisfy the request. They are extensible.
HTTP clients are not required to understand the meaning of all registered status codes, though such understanding is obviously desirable. However, a client MUST understand the class of any status code, as indicated by the first digit, and treat an unrecognised status code as being equivalent to the x00 status code of that class, with the exception that a recipient MUST NOT cache a response with an unrecognised status code.
HTTP status code categories2
There are 5 categories of status code:
- 1XX Informational responses
- 2XX Successful responses
- 3XX Redirection responses
- 4XX Client error responses
- 5XX Server error responses
Anki
Links
References
Fielding, R.; Nottingham, M.; Reschke, J. (June 2022). HTTP Semantics and Content. “Hypertext Transfer Protocol (HTTP/1.1: Semantics and Content”. PDF Document. (Accessed: ). ↩︎
Mozilla Developer Network. “HTTP”. Available at: https://developer.mozilla.org/en-US/docs/Web/HTTP. (Accessed: ). ↩︎