Here we will read about few but important HTTP status codes and messages we generally encounter from response.
Categories of HTTP status message returned by server
| Status Code | Category Name | Example |
|---|---|---|
| 1xx | Information | 100, 101 |
| 2xx | Successful | 200, 202 |
| 3xx | Redirection | 301, 302, 305 |
| 4xx | Client Error | 400, 403, 404, 408 |
| 5xx | Server Error | 500 |
1xx = Information
100 = Continue: Only a part of request has been received.
101 = Switching Protocols.
2xx = Successful
200 = Ok
202 = Accepted: The request is accepted for processing, but processing is not complete.
3xx = Redirection
301 = Moved permanently
302 = Found: The requested page has Moved temporarily to a new url.
305 = Use Proxy
4xx = Client Error
400 = Bad Request
403 = Forbidden
404 = Not Found
408 = Request timeout. The request took longer than the server prepared to wait.
5xx = Server Error
500 = Internal Server Error: The request was not completed. The server met an unexpected condition.
Here is a HTTP Status message decision tree. You may love it.