001package ball.upnp.ssdp; 002/*- 003 * ########################################################################## 004 * UPnP/SSDP Implementation Classes 005 * %% 006 * Copyright (C) 2013 - 2022 Allen D. Ball 007 * %% 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 * ########################################################################## 020 */ 021import java.io.IOException; 022import java.net.InetSocketAddress; 023import java.net.MulticastSocket; 024import lombok.ToString; 025 026/** 027 * SSDP discovery {@link MulticastSocket} implementation. 028 * 029 * {@bean.info} 030 * 031 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball} 032 */ 033@ToString 034public class SSDPMulticastSocket extends MulticastSocket { 035 private static final String ADDRESS = "239.255.255.250"; 036 private static final int PORT = 1900; 037 038 /** 039 * SSDP IPv4 multicast {@link InetSocketAddress}. 040 */ 041 public static final InetSocketAddress INET_SOCKET_ADDRESS = new InetSocketAddress(ADDRESS, PORT); 042 043 /** 044 * Sole constructor. 045 */ 046 public SSDPMulticastSocket() throws IOException { 047 super(PORT); 048 049 setReuseAddress(true); 050 setLoopbackMode(false); 051 setTimeToLive(2); 052 joinGroup(INET_SOCKET_ADDRESS.getAddress()); 053 } 054}