What is "http-status"

Part of the HTTP responses, consisting of:

• A 3-digit code being the first of 1 to 5 (defining which of the 5 classes belongs)

• A word or expression that summarizes the type of answer

Codes are classified into classes/ranges (ranges), from 100 to 199 is one, from 200 to 299 is another and so on until 599. Each is of a different type:

• 1xx: all status starting with 1 is informative type, little used, but allow the client to send headers and body of the request separately

• 2xx: all status starting with 2 are of type success, the request had no error and the server was able to process

• 3xx: all status starting with 3 is redirect like in 2xx, everything ok, but content with the answer is elsewhere

• 4xx: all status starting with 4 are of the client-side error type, the request has some problem and the server could not process

• 5xx: all status starting with 5 are of the server-side error type, the request is correct, but the server could not process due to some problem

Custom codes can be used, and if the user agent finds a code that he does not recognize, he can use the first digit to determine the generic class of the response.

• Full list of HTTP response status (MDN)

• Full list of HTTP response status (Wikipedia)

• Original official documentation (rfc2068)

• Link to the most current rfc of each status