https://nalar.dev/tags/protocol-semantics/ Recent content in Protocol Semantics on Nalar Hugo en-us Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/http-103-early-hints-separate-speculation-from-final-response-semantics/ Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/http-103-early-hints-separate-speculation-from-final-response-semantics/ <p>An HTTP server can emit a <code>103 Early Hints</code> informational response before it has produced the final response. A client may act on suitable fields in that interim message, such as starting a preload named by <code>Link</code>, even though the eventual status code, header fields, and representation are still pending.</p> <p>This creates a deliberate split between speculative work and authoritative response semantics. The interim response can move selected preparation earlier in time, but it cannot stand in for the final response or determine its meaning.</p>