| /** |
| * 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.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.Socket; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Default implementation of {@link KrbTransport} using TCP in block mode. |
| */ |
| public class KrbTcpTransport |
| extends AbstractKrbTransport implements KrbTransport { |
| private Socket socket; |
| private DataOutputStream outputStream; |
| private DataInputStream inputStream; |
| private byte[] messageBuffer; // for message body |
| |
| public KrbTcpTransport(Socket socket) throws IOException { |
| this.socket = socket; |
| this.outputStream = new DataOutputStream(socket.getOutputStream()); |
| this.inputStream = new DataInputStream(socket.getInputStream()); |
| this.messageBuffer = new byte[4 * 1024 * 1024]; // TODO. |
| } |
| |
| |
| @Override |
| public void sendMessage(ByteBuffer message) throws IOException { |
| outputStream.write(message.array()); // TODO: may not be backed by array |
| } |
| |
| @Override |
| public ByteBuffer receiveMessage() throws IOException { |
| int msgLen = inputStream.readInt(); |
| if (msgLen > 0) { |
| if (msgLen > messageBuffer.length) { |
| throw new IOException("Recv buffer overflowed, too large message?"); |
| } |
| inputStream.readFully(messageBuffer, 0, msgLen); |
| return ByteBuffer.wrap(messageBuffer, 0, msgLen); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public boolean isTcp() { |
| return true; |
| } |
| |
| @Override |
| public InetAddress getRemoteAddress() { |
| return socket.getInetAddress(); |
| } |
| |
| @Override |
| public void release() { |
| try { |
| socket.close(); |
| } catch (IOException e) { //NOPMD |
| // System.err.println(e); // NOOP |
| } |
| } |
| } |