Deep Dive into TCP

Everything about TCP, from headers to congestion control

Evan Moon

4 chapters

A series that walks through TCP step by step — from header structure and handshakes to flow control and congestion control — covering the protocol at the heart of the internet.

01
What Information Is Stored in TCP's Header?
From packet switching to checksums — everything about the TCP header
02
How TCP Creates and Terminates Connections: The Handshake
How does TCP guarantee reliable connections?
03
TCP's Flow Control and Error Control
How TCP delivers packets safely — a guide to flow control and error control
04
Sharing the Network Nicely: TCP's Congestion Control
How TCP adjusts window sizes to keep the network in harmony