Error codes
| 302 | Redirect |
| 400 | Bad Request |
| 401 | Authorization Required |
| 402 | Payment Required |
| 403 | Forbidden |
| 404 | File Not Found |
| 405 | Method Not Allowed |
| 406 | Not Acceptable |
| 407 | Proxy Authentication Required |
| 408 | Request Time-out |
| 409 | Conflict |
| 410 | Gone |
| 411 | Length Required |
| 412 | Precondition Failed |
| 413 | Request Entity Too Large |
| 414 | Request-URI Too Large |
| 415 | Unsupported Media Type |
| 500 | Internal Server Error |
| 501 | Method Not Implemented |
| 502 | Bad Gateway |
| 503 | Service Temporarily Unavailable |
| 504 | Gateway Time-out |
| 505 | HTTP Version Not Supported |