1 /* 2 * Copyright (c) 2007, 2015, 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 || (name.equals(ExtendedSocketOptions.SO_REUSEPORT)))) { 49 super.setOption(name, value); 50 } else { 51 if (isClosed()) { 52 throw new SocketException("Socket closed"); 53 } 54 if (name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) { 55 checkSetOptionPermission(name); 56 checkValueType(value, SocketFlow.class); 57 setFlowOption(getFileDescriptor(), (SocketFlow)value); 58 } else { 59 checkValueType(value, Boolean.class); 60 setReusePortOption(getFileDescriptor(), ((Boolean)value).booleanValue()); 61 } 62 } 63 } 64 65 @SuppressWarnings("unchecked") 66 protected <T> T getOption(SocketOption<T> name) throws IOException { 67 if (!(name.equals(ExtendedSocketOptions.SO_FLOW_SLA) 68 || (name.equals(ExtendedSocketOptions.SO_REUSEPORT)))) { 69 return super.getOption(name); 70 } 71 if (isClosed()) { 72 throw new SocketException("Socket closed"); 73 } 74 if (name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) { 75 checkGetOptionPermission(name); 76 SocketFlow flow = SocketFlow.create(); 77 getFlowOption(getFileDescriptor(), flow); 78 return (T)flow; 79 } 80 return (T)getReusePortOption(getFileDescriptor()); 81 } 82 83 protected Set<SocketOption<?>> supportedOptions() { 84 HashSet<SocketOption<?>> options = new HashSet<>( 85 super.supportedOptions()); 86 87 if (flowSupported()) { 88 options.add(ExtendedSocketOptions.SO_FLOW_SLA); 89 } 90 if (reuseportSupported()) { 91 options.add(ExtendedSocketOptions.SO_REUSEPORT); 92 } 93 return options; 94 } 95 96 protected void socketSetOption(int opt, Object val) throws SocketException { 97 try { 98 socketSetOption0(opt, val); 99 } catch (SocketException se) { 100 if (!connected) 101 throw se; 102 } 103 } 104 105 protected synchronized native void bind0(int lport, InetAddress laddr) 106 throws SocketException; 107 108 protected native void send(DatagramPacket p) throws IOException; 109 110 protected synchronized native int peek(InetAddress i) throws IOException; 111 112 protected synchronized native int peekData(DatagramPacket p) throws IOException; 113 114 protected synchronized native void receive0(DatagramPacket p) 115 throws IOException; 116 117 protected native void setTimeToLive(int ttl) throws IOException; 118 119 protected native int getTimeToLive() throws IOException; 120 121 @Deprecated 122 protected native void setTTL(byte ttl) throws IOException; 123 124 @Deprecated 125 protected native byte getTTL() throws IOException; 126 127 protected native void join(InetAddress inetaddr, NetworkInterface netIf) 128 throws IOException; 129 130 protected native void leave(InetAddress inetaddr, NetworkInterface netIf) 131 throws IOException; 132 133 protected native void datagramSocketCreate() throws SocketException; 134 135 protected native void datagramSocketClose(); 136 137 protected native void socketSetOption0(int opt, Object val) 138 throws SocketException; 139 140 protected native Object socketGetOption(int opt) throws SocketException; 141 142 protected native void connect0(InetAddress address, int port) throws SocketException; 143 144 protected native void disconnect0(int family); 145 146 native int dataAvailable(); 147 148 /** 149 * Perform class load-time initializations. 150 */ 151 private static native void init(); 152 }