This article explains the TCP state machine, details the four-way handshake, analyzes why the TIME_WAIT state lasts for two MSL intervals, and illustrates two critical problems caused by delayed packets and missing ACKs, providing examples and code snippets for deeper understanding.
The article walks through every step from typing a URL to final page rendering, detailing URL parsing, DNS lookup, TCP three‑way handshake and termination, HTTP request/response structure, congestion and flow control mechanisms, and the browser’s DOM, CSS, layout and painting processes.
This article explains the TCP socket programming interface, detailing server and client API functions, their purposes, the three‑way handshake, state transitions, data transmission, segmentation, sticky‑packet issues, and the four‑way termination process, providing code examples and diagrams for clear understanding.
This article explains why TCP requires a three‑way handshake to establish connections and a four‑step termination process, using a relatable video‑call scenario and detailed protocol diagrams to illustrate the underlying mechanisms and practical rules for confirming audio transmission.
