HTTP (HyperText Transfer Protocol) is simply one of the protocols used on the Internet. It is what drives the World Wide Web.
After receiving a request from a client (browser), the server software sends a response. The response consists of
- Response line
- The header information
- The body
The response line contains the HTTP version number, the status code and a description of the code in ‘English’.
HTTP/1.1 200 OK
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The table below describes some of the important status codes sent by a server.
Code | Description |
---|---|
100 | Continue |
101 | Switching Protocols |
200 | OK |
201 | Created |
202 | Accepted |
203 | Non-Authoritative Information |
204 | No Content |
205 | Reset Content |
206 | Partial Content |
300 | Multiple Choices |
301 | Moved Permanently |
302 | Moved Temporarily |
303 | See Other |
304 | Not Modified |
305 | Use Proxy |
400 | Bad Request |
401 | Unauthorized |
402 | Payment Required |
403 | Forbidden |
404 | Not Found |
405 | Method Not Allowed |
408 | Request Time-out |
415 | Unsupported Media Type |
500 | Internal Server Error |
501 | Not Implemented |
502 | Bad Gateway |
503 | Service Unavailable |
504 | Gateway Time-out |
505 | HTTP Version not supported |