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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5  * This code is free software; you can redistribute it and/or modify it
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8  * particular file as subject to the "Classpath" exception as provided
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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).
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24  */
25 
26 package java.net;
27 
28 import java.io.IOException;
29 
30 class SocketSecrets {
31 
32     /* accessed by reflection from jdk.net.Sockets */
33 
34     /* obj must be a Socket or ServerSocket */
35 
setOption(Object obj, SocketOption<T> name, T value)36     private static <T> void setOption(Object obj, SocketOption<T> name, T value) throws IOException {
37         SocketImpl impl;
38 
39         if (obj instanceof Socket) {
40             impl = ((Socket)obj).getImpl();
41         } else if (obj instanceof ServerSocket) {
42             impl = ((ServerSocket)obj).getImpl();
43         } else {
44             throw new IllegalArgumentException();
45         }
46         impl.setOption(name, value);
47     }
48 
getOption(Object obj, SocketOption<T> name)49     private static <T> T getOption(Object obj, SocketOption<T> name) throws IOException {
50         SocketImpl impl;
51 
52         if (obj instanceof Socket) {
53             impl = ((Socket)obj).getImpl();
54         } else if (obj instanceof ServerSocket) {
55             impl = ((ServerSocket)obj).getImpl();
56         } else {
57             throw new IllegalArgumentException();
58         }
59         return impl.getOption(name);
60     }
61 
setOption(DatagramSocket s, SocketOption<T> name, T value)62     private static <T> void setOption(DatagramSocket s, SocketOption<T> name, T value) throws IOException {
63         s.getImpl().setOption(name, value);
64     }
65 
getOption(DatagramSocket s, SocketOption<T> name)66     private static <T> T getOption(DatagramSocket s, SocketOption<T> name) throws IOException {
67         return s.getImpl().getOption(name);
68     }
69 
70 }
71