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phase~1 min readUpdated 2026-06-30#phase#orientation

Phase 00 · Orientation

This atlas assumes Low-Level Atlas I and Low-Level Atlas II are done. It is organized as a build queue across seven phases, converging on one real-time chat built in milestones — not a set of fundamentals to read about.

Related notes

Low-LevelMust KnowThe load-bearing ideas of this atlas, and where each one lives.Low-LevelPhase 01 · TCP from ScratchRaw BSD sockets to the bone — the handshake, Nagle, buffers, backpressure, and real network errors.Low-LevelPhase 02 · Design Your Own ProtocolFraming, binary serialization, versioning, and heartbeats over raw TCP — before adopting WebSocket.Low-LevelPhase 03 · WebSocket, for RealRFC 6455 implemented by hand in C — handshake, frame format, control frames, fragmentation, close.