Flexible, configurable, universal dual server switching and backup。 双机热备，灵活可以配置，通用于任何windows软件。
file tip:
AB.txt -server role
public ip.txt -your public ip
restServer.bat -your bat script,use for rest your software
setip1.bat -set your original server ip
setip3.bat -set your public server ip
you must have 3 ip