1 /* 2 * Copyright (c) 2007, 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 java.util.Collections; 31 import jdk.net.*; 32 import static sun.net.ExtendedOptionsImpl.*; 33 34 /* 35 * On Unix systems we simply delegate to native methods. 36 * 37 * @author Chris Hegarty 38 */ 39 40 class PlainDatagramSocketImpl extends AbstractPlainDatagramSocketImpl 41 { 42 static { 43 init(); 44 } 45 46 protected <T> void setOption(SocketOption<T> name, T value) throws IOException { 47 if (!name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) { 48 super.setOption(name, value); 49 } else { 50 if (isClosed()) { 51 throw new SocketException("Socket closed"); 52 } 53 checkSetOptionPermission(name); 54 checkValueType(value, SocketFlow.class); 55 setFlowOption(getFileDescriptor(), (SocketFlow)value); 56 } 57 } 58 59 protected <T> T getOption(SocketOption<T> name) throws IOException { 60 if (!name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) { 61 return super.getOption(name); 62 } 63 if (isClosed()) { 64 throw new SocketException("Socket closed"); 65 } 66 checkGetOptionPermission(name); 67 SocketFlow flow = SocketFlow.create(); 68 getFlowOption(getFileDescriptor(), flow); 69 return (T)flow; 70 } 71 72 protected synchronized native void bind0(int lport, InetAddress laddr) 73 throws SocketException; 74 75 protected native void send(DatagramPacket p) throws IOException; 76 77 protected synchronized native int peek(InetAddress i) throws IOException; 78 79 protected synchronized native int peekData(DatagramPacket p) throws IOException; 80 81 protected synchronized native void receive0(DatagramPacket p) 82 throws IOException; 83 84 protected native void setTimeToLive(int ttl) throws IOException; 85 86 protected native int getTimeToLive() throws IOException; 87 88 protected native void setTTL(byte ttl) throws IOException; 89 90 protected native byte getTTL() throws IOException; 91 92 protected native void join(InetAddress inetaddr, NetworkInterface netIf) 93 throws IOException; 94 95 protected native void leave(InetAddress inetaddr, NetworkInterface netIf) 96 throws IOException; 97 98 protected native void datagramSocketCreate() throws SocketException; 99 100 protected native void datagramSocketClose(); 101 102 protected native void socketSetOption(int opt, Object val) 103 throws SocketException; 104 105 protected native Object socketGetOption(int opt) throws SocketException; 106 107 protected native void connect0(InetAddress address, int port) throws SocketException; 108 109 protected native void disconnect0(int family); 110 111 /** 112 * Perform class load-time initializations. 113 */ 114 private native static void init(); 115 }