/*
* @(#)DatagramPacket.java 1.5 96/01/11 Pavani Diwanji
*
* Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
package java.net;
/**
* A class that represents a datagram packet containing packet data, packet
* length, internet addresses and port.
* @author Pavani Diwanji
*/
public final
class DatagramPacket {
private byte[] buf;
private int length;
private InetAddress address;
private int port;
/**
* This constructor is used to create a DatagramPacket object used
* for receiving datagrams.
* @param ibuf is where packet data is to be received.
* @param ilength is the number of bytes to be received.
*/
public DatagramPacket(byte ibuf[], int ilength) {
if (ilength > ibuf.length) {
throw new IllegalArgumentException("illegal length");
}
buf = ibuf;
length = ilength;
address = null;
port = -1;
}
/**
* This constructor is used construct the DatagramPacket to be sent.
* @param ibuf contains the packet data.
* @param ilength contains the packet length
* @param iaddr and iport contains destination ip addr and port number.
*/
public DatagramPacket(byte ibuf[], int ilength,
InetAddress iaddr, int iport) {
if (ilength > ibuf.length) {
throw new IllegalArgumentException("illegal length");
}
buf = ibuf;
length = ilength;
address = iaddr;
port = iport;
}
public InetAddress getAddress() {
return address;
}
public int getPort() {
return port;
}
public byte[] getData() {
return buf;
}
public int getLength() {
return length;
}
}