1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.net; 19 20 import java.net.DatagramSocket; 21 import java.net.InetAddress; 22 import java.net.SocketException; 23 24 /*** 25 * The DatagramSocketFactory interface provides a means for the 26 * programmer to control the creation of datagram sockets and 27 * provide his own DatagramSocket implementations for use by all 28 * classes derived from 29 * {@link org.apache.commons.net.DatagramSocketClient} 30 * . 31 * This allows you to provide your own DatagramSocket implementations and 32 * to perform security checks or browser capability requests before 33 * creating a DatagramSocket. 34 * <p> 35 * <p> 36 * @author Daniel F. Savarese 37 ***/ 38 39 public interface DatagramSocketFactory 40 { 41 42 /*** 43 * Creates a DatagramSocket on the local host at the first available port. 44 * <p> 45 * @exception SocketException If the socket could not be created. 46 ***/ 47 public DatagramSocket createDatagramSocket() throws SocketException; 48 49 /*** 50 * Creates a DatagramSocket on the local host at a specified port. 51 * <p> 52 * @param port The port to use for the socket. 53 * @exception SocketException If the socket could not be created. 54 ***/ 55 public DatagramSocket createDatagramSocket(int port) throws SocketException; 56 57 /*** 58 * Creates a DatagramSocket at the specified address on the local host 59 * at a specified port. 60 * <p> 61 * @param port The port to use for the socket. 62 * @param laddr The local address to use. 63 * @exception SocketException If the socket could not be created. 64 ***/ 65 public DatagramSocket createDatagramSocket(int port, InetAddress laddr) 66 throws SocketException; 67 }