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DatagramSocketImpl.java
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1998-09-22
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/*
* @(#)DatagramSocketImpl.java 1.11 98/07/01
*
* Copyright 1995-1998 by Sun Microsystems, Inc.,
* 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
* All rights reserved.
*
* This software is the confidential and proprietary information
* of Sun Microsystems, Inc. ("Confidential Information"). You
* shall not disclose such Confidential Information and shall use
* it only in accordance with the terms of the license agreement
* you entered into with Sun.
*/
package java.net;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.InterruptedIOException;
/**
* Abstract datagram and multicast socket implementation base class.
* @author Pavani Diwanji
* @since JDK1.1
*/
public abstract class DatagramSocketImpl implements SocketOptions {
protected int localPort;
/**
* The file descriptor object
* @since JDK1.1
*/
protected FileDescriptor fd;
/**
* Creates a datagram socket
* @since JDK1.1
*/
protected abstract void create() throws SocketException;
/**
* Binds a datagram socket to a local port and address.
* @since JDK1.1
*/
protected abstract void bind(int lport, InetAddress laddr) throws SocketException;
/**
* Sends a datagram packet. The packet contains the data and the
* destination address to send the packet to.
* @param packet to be sent.
* @since JDK1.1
*/
protected abstract void send(DatagramPacket p) throws IOException;
/**
* Peek at the packet to see who it is from.
* @param return the address which the packet came from.
* @since JDK1.1
*/
protected abstract int peek(InetAddress i) throws IOException;
/**
* Receive the datagram packet.
* @param Packet Received.
* @since JDK1.1
*/
protected abstract void receive(DatagramPacket p) throws IOException;
/**
* Set the TTL (time-to-live) option.
* @param TTL to be set.
* @since JDK1.1
*/
protected abstract void setTTL(byte ttl) throws IOException;
/**
* Retrieve the TTL (time-to-live) option.
* @since JDK1.1
*/
protected abstract byte getTTL() throws IOException;
/**
* Join the multicast group.
* @param multicast address to join.
* @since JDK1.1
*/
protected abstract void join(InetAddress inetaddr) throws IOException;
/**
* Leave the multicast group.
* @param multicast address to leave.
* @since JDK1.1
*/
protected abstract void leave(InetAddress inetaddr) throws IOException;
/**
* Close the socket.
* @since JDK1.1
*/
protected abstract void close();
/**
* Get the local port.
* @since JDK1.1
*/
protected int getLocalPort() {
return localPort;
}
/**
* Get the datagram socket file descriptor
* @since JDK1.1
*/
protected FileDescriptor getFileDescriptor() {
return fd;
}
}