I'm trying to implement a PPTP android client in java for a customer.
The authentication is to be done via MSCHAP-v2 (Security not a concern at this level).
My initial idea was that:
if: I send a Start-Ctrl-Connection-Request to the server (via the default port 1723),
-> it will reply with a Start-Ctrl-Connection-Reply followed by the 16-byte authentication challenge.
I'm able to read a 156-byte Start-Ctrl-Connection-Reply as expected but there's no 16-byte challenge followed.
Now it seems to me that I have to request for the challenge in some other way than sending control-connections.
Any idea on
1- How to request for the auth-challenge? Even the RFC regardingMS-CHAPdoes not give any clue on this.
2- Or am I missing something?
