1 /* 2 * Copyright (c) 2007,2011, 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 @SuppressWarnings("unchecked") 60 protected <T> T getOption(SocketOption<T> name) throws IOException { 61 if (!name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) { 62 return super.getOption(name); 63 } 64 if (isClosed()) { 65 throw new SocketException("Socket closed"); 66 } 67 checkGetOptionPermission(name); 68 SocketFlow flow = SocketFlow.create(); 69 getFlowOption(getFileDescriptor(), flow); 70 return (T)flow; 71 } 72 73 protected Set<SocketOption<?>> supportedOptions() { 74 HashSet<SocketOption<?>> options = new HashSet<>( 75 super.supportedOptions()); 76 77 if (flowSupported()) { 78 options.add(ExtendedSocketOptions.SO_FLOW_SLA); 79 } 80 return options; 81 } 82 83 protected void socketSetOption(int opt, Object val) throws SocketException { 84 try { 85 socketSetOption0(opt, val); 86 } catch (SocketException se) { 87 if (!connected) 88 throw se; 89 } 90 } 91 92 protected synchronized native void bind0(int lport, InetAddress laddr) 93 throws SocketException; 94 95 protected native void send(DatagramPacket p) throws IOException; 96 97 protected synchronized native int peek(InetAddress i) throws IOException; 98 99 protected synchronized native int peekData(DatagramPacket p) throws IOException; 100 101 protected synchronized native void receive0(DatagramPacket p) 102 throws IOException; 103 104 protected native void setTimeToLive(int ttl) throws IOException; 105 106 protected native int getTimeToLive() throws IOException; 107 108 @Deprecated 109 protected native void setTTL(byte ttl) throws IOException; 110 111 @Deprecated 112 protected native byte getTTL() throws IOException; 113 114 protected native void join(InetAddress inetaddr, NetworkInterface netIf) 115 throws IOException; 116 117 protected native void leave(InetAddress inetaddr, NetworkInterface netIf) 118 throws IOException; 119 120 protected native void datagramSocketCreate() throws SocketException; 121 122 protected native void datagramSocketClose(); 123 124 protected native void socketSetOption0(int opt, Object val) 125 throws SocketException; 126 127 protected native Object socketGetOption(int opt) throws SocketException; 128 129 protected native void connect0(InetAddress address, int port) throws SocketException; 130 131 protected native void disconnect0(int family); 132 133 /** 134 * Perform class load-time initializations. 135 */ 136 private native static void init(); 137 }