
From Claude with some prompting
This image explains how packets are controlled and transmitted using TCP (Transmission Control Protocol), which is a reliable communication protocol.
The key points are:
- TCP is reliable and provides connection/ordering of packets.
- Connection state is managed using SYN/FIN/RST packets to establish, maintain, and tear down connections.
- Packets are organized into an ordered sequence using sequence numbers (SEQ).
- Acknowledgments (ACK) with the packet’s SEQ number indicate successful transmission.
The image also raises two main questions:
- How much data can be sent right now based on the current network state? (Flow Control)
- If there is a problem, how to control congestion? (Congestion Control)
The image suggests that condition/flow checking should be performed, and then appropriate action taken for transmitting the most data possible on the current network state while handling potential congestion situations.