1 /*

     2  * Copyright (c) 2019, 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 

    26 package sun.nio.ch;

    27 

    28 import java.io.InputStream;

    29 import java.io.OutputStream;

    30 import java.net.InetAddress;

    31 import java.net.SocketAddress;

    32 import java.net.SocketImpl;

    33 import java.net.SocketOption;

    34 import java.security.AccessController;

    35 import java.security.PrivilegedAction;

    36 import java.util.Set;

    37 

    38 /**

    39  * Dummy SocketImpl for use by the socket adaptors. All methods are overridden

    40  * to throw an error.

    41  */

    42 

    43 class DummySocketImpl extends SocketImpl {

    44     private static final PrivilegedAction<SocketImpl> NEW = DummySocketImpl::new;

    45 

    46     private DummySocketImpl() { }

    47 

    48     static SocketImpl create() {

    49         return AccessController.doPrivileged(NEW);

    50     }

    51 

    52     private static <T> T shouldNotGetHere() {

    53         throw new InternalError("Should not get here");

    54     }

    55 

    56     @Override

    57     protected void create(boolean stream) {

    58         shouldNotGetHere();

    59     }

    60 

    61     @Override

    62     protected void connect(SocketAddress remote, int millis) {

    63         shouldNotGetHere();

    64     }

    65 

    66     @Override

    67     protected void connect(String host, int port) {

    68         shouldNotGetHere();

    69     }

    70 

    71     @Override

    72     protected void connect(InetAddress address, int port) {

    73         shouldNotGetHere();

    74     }

    75 

    76     @Override

    77     protected void bind(InetAddress host, int port) {

    78         shouldNotGetHere();

    79     }

    80 

    81     @Override

    82     protected void listen(int backlog) {

    83         shouldNotGetHere();

    84     }

    85 

    86     @Override

    87     protected void accept(SocketImpl si) {

    88         shouldNotGetHere();

    89     }

    90 

    91     @Override

    92     protected InputStream getInputStream() {

    93         return shouldNotGetHere();

    94     }

    95     @Override

    96     protected OutputStream getOutputStream() {

    97         return shouldNotGetHere();

    98     }

    99     @Override

   100     protected int available() {

   101         return shouldNotGetHere();

   102     }

   103 

   104     @Override

   105     protected void close() {

   106         shouldNotGetHere();

   107     }

   108 

   109     @Override

   110     protected Set<SocketOption<?>> supportedOptions() {

   111         return shouldNotGetHere();

   112     }

   113 

   114     @Override

   115     protected <T> void setOption(SocketOption<T> opt, T value) {

   116         shouldNotGetHere();

   117     }

   118 

   119     @Override

   120     protected <T> T getOption(SocketOption<T> opt) {

   121         return shouldNotGetHere();

   122     }

   123 

   124     @Override

   125     public void setOption(int opt, Object value) {

   126         shouldNotGetHere();

   127     }

   128 

   129     @Override

   130     public Object getOption(int opt) {

   131         return shouldNotGetHere();

   132     }

   133 

   134     @Override

   135     protected void shutdownInput() {

   136         shouldNotGetHere();

   137     }

   138 

   139     @Override

   140     protected void shutdownOutput() {

   141         shouldNotGetHere();

   142     }

   143 

   144     @Override

   145     protected boolean supportsUrgentData() {

   146         return shouldNotGetHere();

   147     }

   148 

   149     @Override

   150     protected void sendUrgentData(int data) {

   151         shouldNotGetHere();

   152     }

   153 }