001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.net;
019    
020    import java.net.DatagramSocket;
021    import java.net.InetAddress;
022    import java.net.SocketException;
023    
024    /***
025     * DefaultDatagramSocketFactory implements the DatagramSocketFactory
026     * interface by simply wrapping the java.net.DatagramSocket
027     * constructors.  It is the default DatagramSocketFactory used by
028     * {@link org.apache.commons.net.DatagramSocketClient}
029     *  implementations.
030     * <p>
031     * <p>
032     * @author Daniel F. Savarese
033     * @see DatagramSocketFactory
034     * @see DatagramSocketClient
035     * @see DatagramSocketClient#setDatagramSocketFactory
036     ***/
037    
038    public class DefaultDatagramSocketFactory implements DatagramSocketFactory
039    {
040    
041        /***
042         * Creates a DatagramSocket on the local host at the first available port.
043         * <p>
044         * @exception SocketException If the socket could not be created.
045         ***/
046        public DatagramSocket createDatagramSocket() throws SocketException
047        {
048            return new DatagramSocket();
049        }
050    
051        /***
052         * Creates a DatagramSocket on the local host at a specified port.
053         * <p>
054         * @param port The port to use for the socket.
055         * @exception SocketException If the socket could not be created.
056         ***/
057        public DatagramSocket createDatagramSocket(int port) throws SocketException
058        {
059            return new DatagramSocket(port);
060        }
061    
062        /***
063         * Creates a DatagramSocket at the specified address on the local host
064         * at a specified port.
065         * <p>
066         * @param port The port to use for the socket.
067         * @param laddr  The local address to use.
068         * @exception SocketException If the socket could not be created.
069         ***/
070        public DatagramSocket createDatagramSocket(int port, InetAddress laddr)
071        throws SocketException
072        {
073            return new DatagramSocket(port, laddr);
074        }
075    }