datagramsocketimpl.java

kaffe是一个java虚拟机的源代码。里面包含了一些java例程和标准的java包。

/*
 * Java core library component.
 *
 * Copyright (c) 1997, 1998
 *      Transvirtual Technologies, Inc.  All rights reserved.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file.
 */

package java.net;

import java.io.FileDescriptor;
import java.io.IOException;

abstract public class DatagramSocketImpl
  implements SocketOptions {

protected int localPort;
protected FileDescriptor fd;

public DatagramSocketImpl() {
	localPort = 0;
	fd = new FileDescriptor();
}

protected FileDescriptor getFileDescriptor() {
	return (fd);
}

protected int getLocalPort() {
	return (localPort);
}

abstract protected void bind(int lport, InetAddress laddr) throws SocketException;
abstract protected void close();
abstract protected void create() throws SocketException;
abstract protected byte getTTL() throws IOException;
abstract protected byte getTimeToLive() throws IOException;
abstract protected void join(InetAddress inetaddr) throws IOException;
abstract protected void leave(InetAddress inetaddr) throws IOException;
abstract protected int peek(InetAddress i) throws IOException;
abstract protected void receive(DatagramPacket p) throws IOException;
abstract protected void send(DatagramPacket p) throws IOException;
abstract protected void setTTL(byte ttl) throws IOException;
abstract protected void setTimeToLive(byte ttl) throws IOException;

}