状态码注册表已经被注册更新为如下：

   +-------+-------------------------------+----------------+
   | Value | Description                   | Reference      |
   +-------+-------------------------------+----------------+
   | 100   | Continue                      | Section 6.2.1  |
   | 101   | Switching Protocols           | Section 6.2.2  |
   | 200   | OK                            | Section 6.3.1  |
   | 201   | Created                       | Section 6.3.2  |
   | 202   | Accepted                      | Section 6.3.3  |
   | 203   | Non-Authoritative Information | Section 6.3.4  |
   | 204   | No Content                    | Section 6.3.5  |
   | 205   | Reset Content                 | Section 6.3.6  |
   | 300   | Multiple Choices              | Section 6.4.1  |
   | 301   | Moved Permanently             | Section 6.4.2  |
   | 302   | Found                         | Section 6.4.3  |
   | 303   | See Other                     | Section 6.4.4  |
   | 305   | Use Proxy                     | Section 6.4.5  |
   | 306   | (Unused)                      | Section 6.4.6  |
   | 307   | Temporary Redirect            | Section 6.4.7  |
   | 400   | Bad Request                   | Section 6.5.1  |
   | 402   | Payment Required              | Section 6.5.2  |
   | 403   | Forbidden                     | Section 6.5.3  |
   | 404   | Not Found                     | Section 6.5.4  |
   | 405   | Method Not Allowed            | Section 6.5.5  |
   | 406   | Not Acceptable                | Section 6.5.6  |
   | 408   | Request Timeout               | Section 6.5.7  |
   | 409   | Conflict                      | Section 6.5.8  |
   | 410   | Gone                          | Section 6.5.9  |
   | 411   | Length Required               | Section 6.5.10 |
   | 413   | Payload Too Large             | Section 6.5.11 |
   | 414   | URI Too Long                  | Section 6.5.12 |
   | 415   | Unsupported Media Type        | Section 6.5.13 |
   | 417   | Expectation Failed            | Section 6.5.14 |
   | 426   | Upgrade Required              | Section 6.5.15 |
   | 500   | Internal Server Error         | Section 6.6.1  |
   | 501   | Not Implemented               | Section 6.6.2  |
   | 502   | Bad Gateway                   | Section 6.6.3  |
   | 503   | Service Unavailable           | Section 6.6.4  |
   | 504   | Gateway Timeout               | Section 6.6.5  |
   | 505   | HTTP Version Not Supported    | Section 6.6.6  |
   +-------+-------------------------------+----------------+