Introduction - If you have any usage issues, please Google them yourself
Since version 2.0 was reflected in the chat will be repeated, and I found this issue when testing both on several win2000+ iis5.0, so I have no way to find the error code. So I decided to start writing this 3.0 version. To avoid the problem using again, completely different the version 3.0 Version 2.0 algorithm, hoping to avoid this problem. 3.0 advice friends, will take the and classification authority functions, different levels have different functions.