package org.eclipse.jetty.websocket;
   
   import java.util.Random;
   
   
   public class RandomMaskGen implements MaskGen
   {
       private final Random _random;
   
      public RandomMaskGen()
      {
          this(new Random());
      }
  
      public RandomMaskGen(Random random)
      {
          _random=random;
      }
  
      public void genMask(byte[] mask)
      {
          // The assumption is that this code is always called
          // with an external lock held to prevent concurrent access
          // Otherwise we need to synchronize on the _random.
          _random.nextBytes(mask);
      }
  }