#fixed code
                              public void send(PeerMessage message) throws IllegalStateException {
    logger.trace("Sending msg {} to {}", message.getType(), this);
    if (this.isConnected()) {
      ByteBuffer data = message.getData();
      data.rewind();
      connectionManager.offerWrite(new WriteTask(socketChannel, data, new WriteListener() {
        @Override
        public void onWriteFailed(String message, Throwable e) {
          logger.debug(message, e);
          unbind(true);
        }

        @Override
        public void onWriteDone() {
        }
      }), 1, TimeUnit.SECONDS);
    } else {
      logger.info("Attempting to send a message to non-connected peer {}!", this);
      unbind(true);
    }
  }
#vulnerable code 
                              public void send(PeerMessage message) throws IllegalStateException {
    logger.trace("Sending msg {} to {}", message.getType(), this);
    if (this.isConnected()) {
      ByteBuffer data = message.getData();
      data.rewind();
      boolean writeTaskAdded = connectionManager.offerWrite(new WriteTask(socketChannel, data, new WriteListener() {
        @Override
        public void onWriteFailed(String message, Throwable e) {
          logger.debug(message, e);
          unbind(true);
        }

        @Override
        public void onWriteDone() {
        }
      }), 1, TimeUnit.SECONDS);
      if (!writeTaskAdded) {
        unbind(true);
      }
    } else {
      logger.info("Attempting to send a message to non-connected peer {}!", this);
      unbind(true);
    }
  } 
                            #location 6 
                            #vulnerability type THREAD_SAFETY_VIOLATION