Hello Vlad,
I really don't know. In my case, I don't specify the things in a such low level way, I just say every thing in high level and I gave the responsibility of defining the communication with TransMaster to the developer.
One BIG mistake that you are doing is to use HTTP to communicate with TransMaster,
you should use HTTPS.
Now all you need to do is relax, do the part 3 and wait.
Best Regards
Samuel