- TlsConfig.applicationProtocols(String...) sets the listener's negotiable
ALPN protocol list via SSLParameters, inherited by every accepted socket
like clientAuth — works on both keystore() and ofContext(), untouched
unless called. Enables TLS-ALPN-01 (RFC 8737) style on-demand cert
issuance: a custom KeyManager can read the already-resolved protocol via
engine/socket getHandshakeApplicationProtocol() inside
chooseEngineServerAlias/chooseServerAlias, since ALPN is resolved during
ClientHello/ServerHello, always before Certificate production.
- Request gains isSecure()/sslSession(), threaded through RequestParser from
the accepted SSLSocket exactly like remoteAddress() — reference-only,
zero per-request allocation. sslSession() defers to SSLSocket#getSession()
lazily, so it's a cached-field read (handshake already completed by the
time a handler can call it), never a forced handshake.
- WebSocketSession.isSecure()/sslSession() delegate to the upgrading
Request rather than tracking the socket a second time.
- Documents TLS end-to-end in README.md (listeners, TlsConfig, SNI, ALPN,
mTLS, Request/WebSocketSession accessors).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>