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)
  47         throws IOException
  48     {
  49         if (!name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) {
  50             super.setOption(name, value);
  51         } else {
  52             if (isClosed()) {
  53                 throw new SocketException("Socket closed");
  54             }
  55             setSecurityCheck(name);
  56             checkValueType(value, SocketFlow.class);
  57             setFlowOption(getFileDescriptor(), (SocketFlow)value);
  58         }
  59     }
  60 
  61     protected <T> T getOption(SocketOption<T> name) throws IOException
  62     {
  63         if (!name.equals(ExtendedSocketOptions.SO_FLOW_SLA)) {
  64             return super.getOption(name);
  65         }
  66         if (isClosed()) {
  67             throw new SocketException("Socket closed");
  68         }
  69         getSecurityCheck(name);
  70         SocketFlow flow = SocketFlow.create();
  71         getFlowOption(getFileDescriptor(), flow);
  72         return (T)flow;
  73     }
  74 
  75     protected Set<SocketOption<?>> supportedOptions()
  76     {
  77         HashSet<SocketOption<?>> options = new HashSet(
  78             super.supportedOptions());
  79 
  80         if (flowSupported()) {
  81             options.add(ExtendedSocketOptions.SO_FLOW_SLA);
  82         }
  83         return options;
  84     }
  85 
  86     protected synchronized native void bind0(int lport, InetAddress laddr)
  87         throws SocketException;
  88 
  89     protected native void send(DatagramPacket p) throws IOException;
  90 
  91     protected synchronized native int peek(InetAddress i) throws IOException;
  92 
  93     protected synchronized native int peekData(DatagramPacket p) throws IOException;
  94 
  95     protected synchronized native void receive0(DatagramPacket p)
  96         throws IOException;
  97 
  98     protected native void setTimeToLive(int ttl) throws IOException;
  99 
 100     protected native int getTimeToLive() throws IOException;
 101 
 102     @Deprecated
 103     protected native void setTTL(byte ttl) throws IOException;
 104 
 105     @Deprecated
 106     protected native byte getTTL() throws IOException;
 107 
 108     protected native void join(InetAddress inetaddr, NetworkInterface netIf)
 109         throws IOException;
 110 
 111     protected native void leave(InetAddress inetaddr, NetworkInterface netIf)
 112         throws IOException;
 113 
 114     protected native void datagramSocketCreate() throws SocketException;
 115 
 116     protected native void datagramSocketClose();
 117 
 118     protected native void socketSetOption(int opt, Object val)
 119         throws SocketException;
 120 
 121     protected native Object socketGetOption(int opt) throws SocketException;
 122 
 123     protected native void connect0(InetAddress address, int port) throws SocketException;
 124 
 125     protected native void disconnect0(int family);
 126 
 127     /**
 128      * Perform class load-time initializations.
 129      */
 130     private native static void init();
 131 }