| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.kerby.kerberos.kerb.transport; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.DatagramChannel; |
| import java.util.concurrent.ArrayBlockingQueue; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Default implementation of {@link KrbTransport} using UDP. |
| */ |
| public class KdcUdpTransport extends KrbUdpTransport { |
| private BlockingQueue<ByteBuffer> bufferQueue = new ArrayBlockingQueue<>(2); |
| |
| public KdcUdpTransport(DatagramChannel channel, InetSocketAddress remoteAddress) throws IOException { |
| super(remoteAddress); |
| setChannel(channel); |
| } |
| |
| @Override |
| public synchronized ByteBuffer receiveMessage() throws IOException { |
| long timeout = 1000; // TODO: configurable or option |
| ByteBuffer message; |
| try { |
| message = bufferQueue.poll(timeout, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| throw new IOException(e); |
| } |
| return message; |
| } |
| |
| protected synchronized void onRecvMessage(ByteBuffer message) { |
| if (message != null) { |
| bufferQueue.add(message); |
| } |
| } |
| } |