The endpoint refactor findings doc relegated TCP+TLS to a 'sibling
accept loop' that duplicated the endpoint's dispatch logic at the
assembly layer. That was ADR-010 Amendment 1's workaround for the
endpoint being welded to quinn — not a deliberate design.
The endpoint now exposes a public dispatch() method so every transport
(quinn, iroh, TCP+TLS, future SSH, future WebTransport) calls the same
dispatch path: handler lookup, build_auth_context, spawn. The
transport-specific parts (ALPN extraction, fingerprint extraction,
Connection construction, no-handler close) happen before dispatch is
called. No duplicated logic at the assembly layer.
Also: the acme-tls/1 guard is quinn-specific (ACME challenges arrive
over QUIC); a TCP+TLS listener serving HTTPS does not advertise
acme-tls/1. build_auth_context becomes a private helper called by
dispatch, not a standalone function.