//
// We name it with the "h2" prefix to stay out of the "http2" prefix
// namespace used by x/tools/cmd/bundle for h2_bundle.go.
type h2Transport interface {
	CloseIdleConnections()
}

func (t *Transport) hasCustomTLSDialer() bool {
	return t.DialTLS != nil || t.DialTLSContext != nil
}

var http2client = godebug.New("http2client")

// onceSetNextProtoDefaults initializes TLSNextProto.