- /*
- * Copyright 2001-2004 The Apache Software Foundation
- *
- * Licensed 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.commons.net;
- import java.io.IOException;
- import java.net.DatagramPacket;
- import java.net.InetAddress;
-
- /***
- * The DiscardUDPClient class is a UDP implementation of a client for the
- * Discard protocol described in RFC 863. To use the class,
- * just open a local UDP port
- * with <a href="org.apache.commons.net.DatagramSocketClient.html#open"> open </a>
- * and call <a href="#send"> send </a> to send datagrams to the server
- * After you're done sending discard data, call
- * <a href="org.apache.commons.net.DatagramSocketClient.html#close"> close() </a>
- * to clean up properly.
- * <p>
- * <p>
- * @author Daniel F. Savarese
- * @see DiscardTCPClient
- ***/
-
- public class DiscardUDPClient extends DatagramSocketClient
- {
- /*** The default discard port. It is set to 9 according to RFC 863. ***/
- public static final int DEFAULT_PORT = 9;
-
- DatagramPacket _sendPacket;
-
- public DiscardUDPClient()
- {
- _sendPacket = new DatagramPacket(new byte[0], 0);
- }
-
-
- /***
- * Sends the specified data to the specified server at the specified port.
- * <p>
- * @param data The discard data to send.
- * @param length The length of the data to send. Should be less than
- * or equal to the length of the data byte array.
- * @param host The address of the server.
- * @param port The service port.
- * @exception IOException If an error occurs during the datagram send
- * operation.
- ***/
- public void send(byte[] data, int length, InetAddress host, int port)
- throws IOException
- {
- _sendPacket.setData(data);
- _sendPacket.setLength(length);
- _sendPacket.setAddress(host);
- _sendPacket.setPort(port);
- _socket_.send(_sendPacket);
- }
-
-
- /***
- * Same as
- * <code>send(data, length, host. DiscardUDPClient.DEFAULT_PORT)</code>.
- ***/
- public void send(byte[] data, int length, InetAddress host)
- throws IOException
- {
- send(data, length, host, DEFAULT_PORT);
- }
-
-
- /***
- * Same as
- * <code>send(data, data.length, host. DiscardUDPClient.DEFAULT_PORT)</code>.
- ***/
- public void send(byte[] data, InetAddress host) throws IOException
- {
- send(data, data.length, host, DEFAULT_PORT);
- }
-
- }
-