Liangxu Linux

Jun 2, 2024 · Fundamentals

Mastering TCP: Handshakes, Flow Control, Congestion Control & More

This comprehensive guide covers TCP fundamentals—including differences from UDP, the three‑way and four‑way handshakes, half‑open queues and SYN flood attacks, header fields, Fast Open, timestamps, RTO calculation, flow and congestion control, Nagle algorithm, delayed ACKs, and keep‑alive mechanisms—providing clear explanations and practical examples for engineers.