protected abstract Request peekKey() throws IOException;
    protected abstract void doSend( Request request ) throws IOException;
    protected abstract void doRecv( Response response ) throws IOException;
    protected abstract void doSkip() throws IOException;

    public synchronized void sendrecv( Request request,
                    Response response,

        return bufferIndex - start;
    }


    @Override
    protected int readBytesWireFormat ( byte[] buffer, int bufferIndex ) {
        // handled special in SmbTransport.doRecv()
        return 0;
    }


    @Override
    public String toString () {
        return new String(

        bufferIndex += 12; // 10 reserved

        return bufferIndex - start;
    }
    int readBytesWireFormat( byte[] buffer, int bufferIndex ) {
        // handled special in SmbTransport.doRecv()
        return 0;
    }
    public String toString() {
        return new String( "SmbComReadAndXResponse[" +
            super.toString() +
            ",dataCompactionMode=" + dataCompactionMode +

	ch2 := make(chan Maskable, 1)
	ch3 := make(chan Maskable, 1)
	doneCh := make(chan struct{})
	defer close(doneCh)
	if err := ps.Subscribe(MaskAll, ch1, doneCh, nil); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if err := ps.Subscribe(MaskAll, ch2, doneCh, nil); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if err := ps.Subscribe(MaskAll, ch3, doneCh, nil); err == nil {
		t.Fatalf("unexpected nil err")
	}
}

func StreamItems[I any](store Store[I], target Target, doneCh <-chan struct{}, logger logger) {
	go func() {
		keyCh := replayItems(store, doneCh, logger, target.Name())
		sendItems(target, keyCh, doneCh, logger)
	}()

		enc := json.NewEncoder(&buf)
		for {
			select {
			case <-doneCh:
				return
			case v, ok := <-subChT:
				if !ok {
					return
				}
				buf.Reset()
				err := enc.Encode(v)
				if err != nil {
					return
				}

				select {
				case subCh <- append(GetByteBuffer()[:0], buf.Bytes()...):
					continue
				case <-doneCh:
					return
				}
			}
		}
	}()

		}

		if !done {
			// Drain channel.
			for range s.responses {
			}
		}
	}()
	doneCh := s.ctx.Done()
	for {
		select {
		case <-doneCh:
			if err := context.Cause(s.ctx); !errors.Is(err, errStreamEOF) {
				return err
			}
			// Fall through to be sure we have returned all responses.
			doneCh = nil
		case resp, ok := <-s.responses:
			if !ok {
				done = true
				return nil
			}

			entry := lastN[(cnt+i)%last]
			if (entry == log.Info{}) {
				continue
			}
			select {
			case subCh <- entry:
			case <-doneCh:
				return nil
			}
		}
	}
	return sys.pubsub.Subscribe(madmin.LogMaskAll, subCh, doneCh, filter)
}

// Init if HTTPConsoleLoggerSys is valid, always returns nil right now
func (sys *HTTPConsoleLoggerSys) Init(_ context.Context) error {
	return nil

func (listener *httpListener) start() {
	// Closure to send acceptResult to acceptCh.
	// It returns true if the result is sent else false if returns when doneCh is closed.
	send := func(result acceptResult) bool {
		select {
		case listener.acceptCh <- result:
			// Successfully written to acceptCh
			return true
		case <-listener.ctx.Done():
			return false
		}
	}