该源码包含了rasapi32的全部功能，方便实现在windows下的拨号，如pppoe拨号等 这个也是一个不可多得的参考资料-The source code contains all of the features of rasapi32 to facilitate the achievement of the dial-up in the windows, such as the pppoe dial-up, etc. This is a rare reference

ras source code can used to dial up -ras dial up connection