code: public static void flipBuffers(WsByteBuffer[] buffers, int totalSize) {
          int size = 0;
          boolean overLimit = false;
          for (int i = 0; i < buffers.length && null != buffers[i]; i++) {
              if (overLimit) {
                  buffers[i].limit(buffers[i].position());
              } else {
                  buffers[i].flip();
                  size += buffers[i].remaining();
                  overLimit = (size >= totalSize);
              }
          }
      }
docs: Flip the input list of buffers, walking through the list until the flipped
  amount equals the input total size, mark the rest of the buffers as empty.
  
  @param buffers
  @param totalSize