"sync"

	"github.com/minio/minio/internal/hash/sha256"
	xioutil "github.com/minio/minio/internal/ioutil"
	"github.com/tinylib/msgp/msgp"
)

//go:generate stringer -type=HandlerID -output=handlers_string.go -trimprefix=Handler msg.go $GOFILE

// HandlerID is a handler identifier.
// It is used to determine request routing on the server.
// Handlers can be registered with a static subroute.

func (i HandlerID) String() string {
	if i >= HandlerID(len(_HandlerID_index)-1) {
		return "HandlerID(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _HandlerID_name[_HandlerID_index[i]:_HandlerID_index[i+1]]

}

// RegisterSingleHandler will register a stateless handler that serves
// []byte -> ([]byte, error) requests.
// subroutes are joined with "/" to a single subroute.
func (m *Manager) RegisterSingleHandler(id HandlerID, h SingleHandlerFn, subroute ...string) error {
	if !id.valid() {
		return ErrUnknownHandler
	}
	s := strings.Join(subroute, "/")
	if debugPrint {

// Request allows to do a single remote request.
// 'req' will not be used after the call and caller can reuse.
// If no deadline is set on ctx, a 1-minute deadline will be added.
func (c *Connection) Request(ctx context.Context, h HandlerID, req []byte) ([]byte, error) {
	if !h.valid() {
		return nil, ErrUnknownHandler
	}
	if c.State() != StateConnected {
		return nil, ErrDisconnected
	}
	// Create mux client and call.

		LastPong:  time.Now().Unix(),
		BaseFlags: parent.baseFlags,
	}
}

// roundtrip performs a roundtrip, returning the first response.
// This cannot be used concurrently.
func (m *muxClient) roundtrip(h HandlerID, req []byte) ([]byte, error) {
	if m.init {
		return nil, errors.New("mux client already used")
	}
	m.init = true
	m.singleResp = true
	msg := message{
		Op:         OpRequest,
		MuxID:      m.MuxID,

				return nil
			},
			OutCapacity: 1,
			InCapacity:  1,
		}))
	}
	register(local)
	register(remote)

	// local to remote
	testHandler := func(t *testing.T, handler HandlerID) {
		remoteConn := local.Connection(remoteHost)
		const testPayload = "Hello Grid World!"

		ctx, cancel := context.WithCancel(context.Background())