1/*
2 * Copyright (c) 2009, 2010, 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
26package sun.net;
27
28import java.net.InetAddress;
29import java.io.FileDescriptor;
30import java.io.IOException;
31import java.security.AccessController;
32import java.security.PrivilegedAction;
33import sun.security.action.GetPropertyAction;
34
35/**
36 * Defines static methods to be invoked prior to binding or connecting TCP sockets.
37 */
38
39public final class NetHooks {
40
41    // Android-removed: Android doesn't support Session Description Protocol (SDP).
42    /*
43    /**
44     * A provider with hooks to allow sockets be converted prior to binding or
45     * connecting a TCP socket.
46     *
47     * <p> Concrete implementations of this class should define a zero-argument
48     * constructor and implement the abstract methods specified below.
49     *
50    public static abstract class Provider {
51        /**
52         * Initializes a new instance of this class.
53         *
54        protected Provider() {}
55
56        /**
57         * Invoked prior to binding a TCP socket.
58         *
59        public abstract void implBeforeTcpBind(FileDescriptor fdObj,
60                                               InetAddress address,
61                                               int port)
62            throws IOException;
63
64        /**
65         * Invoked prior to connecting an unbound TCP socket.
66         *
67        public abstract void implBeforeTcpConnect(FileDescriptor fdObj,
68                                                 InetAddress address,
69                                                 int port)
70            throws IOException;
71    }
72    */
73
74    /**
75     * For now, we load the SDP provider on Solaris. In the future this may
76     * be changed to use the ServiceLoader facility to allow the deployment of
77     * other providers.
78     */
79    // Android-removed: Android doesn't support Session Description Protocol (SDP).
80    // private static final Provider provider = new sun.net.sdp.SdpProvider();
81
82    /**
83     * Invoke prior to binding a TCP socket.
84     */
85    public static void beforeTcpBind(FileDescriptor fdObj,
86                                     InetAddress address,
87                                     int port)
88        throws IOException
89    {
90        // Android-removed: Android doesn't support Session Description Protocol (SDP).
91        // provider.implBeforeTcpBind(fdObj, address, port);
92    }
93
94    /**
95     * Invoke prior to connecting an unbound TCP socket.
96     */
97    public static void beforeTcpConnect(FileDescriptor fdObj,
98                                        InetAddress address,
99                                        int port)
100        throws IOException
101    {
102        // Android-removed: No SDP support
103        // provider.implBeforeTcpConnect(fdObj, address, port);
104    }
105}
106