Thanks for your inputs. You are right, I am going to focus on making the protocol working successfully. I am thinking of recovery mechanism as a part of future research. I am going through the ws-at specs and the book. Soon will come up with a design based on the approach we discussed earlier. I will need some help as inputs from you once I complete the design on my end. I will keep in mind about the complexity of state machines. I have few more questions but will post those once I am in the process of setting up the workspace.
Thanks & Regards,