TCP Finite State Machine

參考資料

• https://developer.mozilla.org/en-US/docs/Glossary/State_machine
• https://youtu.be/D26sUZ6DHNQ?si=fz1oL9dIwIuoaLMQ
• https://www.cs.montana.edu/courses/spring2004/440/topics/15-transport/lectures/slideset2.pdf