Application Layer Core HTTP Processing Transport Layer 1. USER INPUT 2. STATE MERGE 3. COMPILE 4. NETWORK USER INTENT URL & Params (Request Obj) SESSION STATE Cookies & Auth PREPARED REQUEST Raw HTTP String / Bytes HTTP ADAPTER Transport Config URLLIB3 POOL TCP/TLS Connections Initial request containing URL, headers, and payload. Persistent state across requests, injecting cookies & auth. Merged and byte-compiled data, exactly as it will hit the wire. Resolves connection routing, proxies, and retries. Manages reusable sockets for efficient network transport.