As TheMaartian writes, I have just tried to help. My original question was not to lean you from your DIY but to understand the purpose. And depending from the answer may be give some useful comment. You answer is a bit hard to interpret, but at least it is clear working solution to remotely switch Sonar transport is not the (primary) target.
Then you have mentioned you want implement some feedback. Since I do not know either you understand that process, I have pointed you to the information you "wish to know before you start".
I wish you all the best with your project and I am not going to bother you again.
PS I do not need to "drive traffic" to my site. In fact I pay for the traffic myself. The site has no ads, and no commercial software. The only purpose of it is help Sonar users to deal with Control Surfaces. And I logically thought that since you are going to build one, some information can be helpful.