Protocol Flow Analysis: Mapping Decision Orbits Against Linear Process Streams
When we diagram a protocol flow, the instinct is to draw arrows in a straight line: step one, step two, step three, done. But real protocols rarely behave that cleanly. A message might need retransmission. A handshake might loop through alternative cipher suites. A transaction might hit a dead end and roll back to a previous state. These are not exceptions to the flow—they are the flow. We call these recurring evaluation loops decision orbits , and they sit in tension with the simpler linear process stream . This guide maps both structures, shows when each fits, and helps you avoid the costly mistake of forcing one shape onto the wrong problem. Where Decision Orbits and Linear Streams Show Up in Real Work Protocol flows appear everywhere: in network handshakes, API orchestration, data ingestion pipelines, and even business process automation.