June 2000
Beginner to intermediate
80 pages
2h 49m
English
Content preview from HTTP Pocket Reference
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Server Response Codes
The initial line of the server’s response indicates the HTTP version, a three-digit status code, and a human-readable description of the result. Status codes are grouped as follows:
|
Code Range |
Response Meaning |
|
100-199 |
Informational |
|
200-299 |
Client request successful |
|
300-399 |
Client request redirected, further action necessary |
|
400-499 |
Client request incomplete |
|
500-599 |
Server errors |
HTTP defines only a few specific codes in each range, although these ranges will become more populated as HTTP evolves.
If a client receives a response code that it does not recognize, it should understand its basic meaning from its numerical range. While most web browsers handle codes in the 100, 200, and 300 ranges silently, some error codes in the 400 and 500 ranges are commonly reported back to the user (e.g., “404 Not Found”).
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