Need help in writing a radius client

[Abhinay Sinha]

Hi,

I am planning to write an ISP billing server and gateway which
communicates with a RADIUS server for AAA work. Can anybody please
help me with the following:

1. I need an open source library for client. I found radiusclient-ng.
Is it sufficient for work.

2. Can anybody please help me find some better documentation for
working me with the library, i.e. details regarding its API, cause the
docs provided with the library are minimal?

3. Can I get some sample code for client anywhere?

Thanks in advance

Abhinay