com.groupbyinc.common.util.net.discard.DiscardUDPClient Maven / Gradle / Ivy
/*
* 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.commons.net.discard;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.InetAddress;
import org.apache.commons.net.DatagramSocketClient;
/***
* 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 {@link org.apache.commons.net.DatagramSocketClient#open open }
* and call {@link #send send } to send datagrams to the server
* After you're done sending discard data, call
* {@link org.apache.commons.net.DatagramSocketClient#close close() }
* to clean up properly.
*
*
* @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.
*
* @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
* send(data, length, host. DiscardUDPClient.DEFAULT_PORT).
***/
public void send(byte[] data, int length, InetAddress host)
throws IOException
{
send(data, length, host, DEFAULT_PORT);
}
/***
* Same as
* send(data, data.length, host. DiscardUDPClient.DEFAULT_PORT).
***/
public void send(byte[] data, InetAddress host) throws IOException
{
send(data, data.length, host, DEFAULT_PORT);
}
}