Developer Builds HTTP Server From Scratch in Go to Demystify Web Internals

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A developer has documented building an HTTP server from scratch using Go, aiming to explain how HTTP works beneath the surface. The project begins with TCP/IP fundamentals, explaining how the Internet Protocol breaks data into small packets and routes them between machines using IP addresses and DNS. TCP sits on top of IP to ensure reliable, ordered delivery of packets and uses port numbers to direct data to the correct application. While TCP reliably transfers raw bytes between client and server, it has no understanding of what those bytes mean, leaving higher-level protocols like HTTP to define structure and boundaries between requests. The author notes that the underlying concepts are language-agnostic and can be applied in any language capable of opening a network socket.

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