TCP Reliable 1

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:

  1. TCP is reliable and provides connection/ordering of packets.
  2. Connection state is managed using SYN/FIN/RST packets to establish, maintain, and tear down connections.
  3. Packets are organized into an ordered sequence using sequence numbers (SEQ).
  4. Acknowledgments (ACK) with the packet’s SEQ number indicate successful transmission.

The image also raises two main questions:

  1. How much data can be sent right now based on the current network state? (Flow Control)
  2. 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.

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