const char task1_name[] = "/job:localhost/replica:0/task:1/device:CPU:0";
  const char task2_name[] = "/job:localhost/replica:0/task:2/device:CPU:0";

  // Create one variable per task.
  TFE_TensorHandle* h0 = TestVariable(ctx, 1.0, task1_name);
  TFE_TensorHandle* h1 = TestVariable(ctx, 2.0, task2_name);
  TFE_TensorHandle* h2 = TestVariable(ctx, 3.0, task0_name);

func (c *Connection) shouldConnect() bool {
	// The remote should have the opposite result.
	h0 := xxh3.HashString(c.Local + c.Remote)
	h1 := xxh3.HashString(c.Remote + c.Local)
	if h0 == h1 {
		return c.Local < c.Remote
	}
	return h0 < h1
}

func (c *Connection) send(ctx context.Context, msg []byte) error {
	select {
	case <-ctx.Done():