1 /* 2 * Copyright (c) 2007, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package java.net; 26 27 import java.io.IOException; 28 import java.util.Set; 29 import java.util.HashSet; 30 import sun.net.ext.ExtendedSocketOptions; 31 32 /* 33 * On Unix systems we simply delegate to native methods. 34 * 35 * @author Chris Hegarty 36 */ 37 38 class PlainDatagramSocketImpl extends AbstractPlainDatagramSocketImpl 39 { 40 static { 41 init(); 42 } 43 44 protected void socketSetOption(int opt, Object val) throws SocketException { 45 if (opt == SocketOptions.SO_REUSEPORT && 46 !supportedOptions().contains(StandardSocketOptions.SO_REUSEPORT)) { 47 throw new UnsupportedOperationException("unsupported option"); 48 } 49 try { 50 socketSetOption0(opt, val); 51 } catch (SocketException se) { 52 if (!connected) 53 throw se; 54 } 55 } 56 57 protected synchronized native void bind0(int lport, InetAddress laddr) 58 throws SocketException; 59 60 protected native void send(DatagramPacket p) throws IOException; 61 62 protected synchronized native int peek(InetAddress i) throws IOException; 63 64 protected synchronized native int peekData(DatagramPacket p) throws IOException; 65 66 protected synchronized native void receive0(DatagramPacket p) 67 throws IOException; 68 69 protected native void setTimeToLive(int ttl) throws IOException; 70 71 protected native int getTimeToLive() throws IOException; 72 73 @Deprecated 74 protected native void setTTL(byte ttl) throws IOException; 75 76 @Deprecated 77 protected native byte getTTL() throws IOException; 78 79 protected native void join(InetAddress inetaddr, NetworkInterface netIf) 80 throws IOException; 81 82 protected native void leave(InetAddress inetaddr, NetworkInterface netIf) 83 throws IOException; 84 85 protected native void datagramSocketCreate() throws SocketException; 86 87 protected native void datagramSocketClose(); 88 89 protected native void socketSetOption0(int opt, Object val) 90 throws SocketException; 91 92 protected native Object socketGetOption(int opt) throws SocketException; 93 94 protected native void connect0(InetAddress address, int port) throws SocketException; 95 96 protected native void disconnect0(int family); 97 98 native int dataAvailable(); 99 100 /** 101 * Perform class load-time initializations. 102 */ 103 private static native void init(); 104 }