server

type CertManager struct {
	// contains filtered or unexported fields
}

type Listener interface {
	// Proto returns the transport tag — "udp", "tcp", "tls", "doh",
	// "doh3", "doq" — used for logging and metrics.
	Proto() string

	// Addr returns the configured bind address.
	Addr() string

	// Bind acquires the underlying socket (and any TLS material it
	// needs) synchronously. A non-nil return means the listener is
	// not ready to serve.
	Bind(ctx context.Context) error

	// Serve blocks until Shutdown is called or the socket is closed.
	// It must only be called after a successful Bind.
	Serve(ctx context.Context) error

	// Shutdown releases the underlying socket. Safe to call before
	// Serve or after Serve has already returned.
	Shutdown(ctx context.Context) error

	// Critical reports whether a Bind failure on this listener should
	// abort server startup. Plain DNS (UDP+TCP on cfg.Bind) is
	// critical; optional services (TLS, DoH, DoH3, DoQ) are not —
	// a missing cert or misconfigured addr only disables that service.
	Critical() bool

	// Serving reports whether the Serve loop is currently active.
	// This is stricter than "Bind succeeded": QUIC-based listeners
	// (DoH3, DoQ) complete their real startup inside Serve, so a
	// listener can be bound but not actually serving if Serve
	// returned an error during its own setup phase.
	Serving() bool
}

type Server struct {
	// contains filtered or unexported fields
}