I am working with Eastrall's files, their Rhisis project, I have never handled network packages, and although I have managed to understand most of the system's operation, I still do not know how to understand the structure of the package sent in client and the response package, only that I need to understand, the logic that would entail would not be any problem, but I have never handled network packages so it is a completely new area, could someone help me? How or where can I go to understand the structure of the Request / Answer package depending on the Header?