1 /*
2 * Copyright (c) 2000, 2013, 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.*;
29 import java.net.*;
30 import java.nio.channels.*;
31
32
33 // Make a server-socket channel look like a server socket.
34 //
35 // The methods in this class are defined in exactly the same order as in
36 // java.net.ServerSocket so as to simplify tracking future changes to that
37 // class.
38 //
39
40 public class ServerSocketAdaptor // package-private
41 extends ServerSocket
42 {
43
44 // The channel being adapted
45 private final ServerSocketChannelImpl ssc;
46
47 // Timeout "option" value for accepts
48 private volatile int timeout;
49
50 public static ServerSocket create(ServerSocketChannelImpl ssc) {
51 try {
52 return new ServerSocketAdaptor(ssc);
53 } catch (IOException x) {
54 throw new Error(x);
55 }
56 }
57
58 // ## super will create a useless impl
59 private ServerSocketAdaptor(ServerSocketChannelImpl ssc)
60 throws IOException
61 {
62 this.ssc = ssc;
63 }
64
65
66 public void bind(SocketAddress local) throws IOException {
67 bind(local, 50);
68 }
69
70 public void bind(SocketAddress local, int backlog) throws IOException {
71 if (local == null)
72 local = new InetSocketAddress(0);
73 try {
74 ssc.bind(local, backlog);
75 } catch (Exception x) {
76 Net.translateException(x);
77 }
78 }
79
80 public InetAddress getInetAddress() {
81 if (!ssc.isBound())
82 return null;
83 return Net.getRevealedLocalAddress(ssc.localAddress()).getAddress();
84
85 }
86
87 public int getLocalPort() {
88 if (!ssc.isBound())
89 return -1;
90 return Net.asInetSocketAddress(ssc.localAddress()).getPort();
91 }
92
93
94 public Socket accept() throws IOException {
95 synchronized (ssc.blockingLock()) {
96 try {
97 if (!ssc.isBound())
98 throw new NotYetBoundException();
99 if (timeout == 0) {
100 SocketChannel sc = ssc.accept();
101 if (sc == null && !ssc.isBlocking())
102 throw new IllegalBlockingModeException();
103 return sc.socket();
104 }
105
106 ssc.configureBlocking(false);
107 try {
108 SocketChannel sc;
109 if ((sc = ssc.accept()) != null)
110 return sc.socket();
111 long to = timeout;
112 for (;;) {
113 if (!ssc.isOpen())
114 throw new ClosedChannelException();
115 long st = System.currentTimeMillis();
116 int result = ssc.poll(Net.POLLIN, to);
117 if (result > 0 && ((sc = ssc.accept()) != null))
118 return sc.socket();
119 to -= System.currentTimeMillis() - st;
120 if (to <= 0)
121 throw new SocketTimeoutException();
122 }
123 } finally {
124 if (ssc.isOpen())
125 ssc.configureBlocking(true);
126 }
127
128 } catch (Exception x) {
129 Net.translateException(x);
130 assert false;
131 return null; // Never happens
132 }
133 }
134 }
135
136 public void close() throws IOException {
137 ssc.close();
138 }
139
140 public ServerSocketChannel getChannel() {
141 return ssc;
142 }
143
144 public boolean isBound() {
145 return ssc.isBound();
146 }
147
148 public boolean isClosed() {
149 return !ssc.isOpen();
150 }
151
152 public void setSoTimeout(int timeout) throws SocketException {
153 this.timeout = timeout;
154 }
155
156 public int getSoTimeout() throws SocketException {
157 return timeout;
158 }
159
160 public void setReuseAddress(boolean on) throws SocketException {
161 try {
162 ssc.setOption(StandardSocketOptions.SO_REUSEADDR, on);
163 } catch (IOException x) {
164 Net.translateToSocketException(x);
165 }
166 }
167
168 public boolean getReuseAddress() throws SocketException {
169 try {
170 return ssc.getOption(StandardSocketOptions.SO_REUSEADDR).booleanValue();
171 } catch (IOException x) {
172 Net.translateToSocketException(x);
173 return false; // Never happens
174 }
175 }
176
177 public String toString() {
178 if (!isBound())
179 return "ServerSocket[unbound]";
180 return "ServerSocket[addr=" + getInetAddress() +
181 // ",port=" + getPort() +
182 ",localport=" + getLocalPort() + "]";
183 }
184
185 public void setReceiveBufferSize(int size) throws SocketException {
186 // size 0 valid for ServerSocketChannel, invalid for ServerSocket
187 if (size <= 0)
188 throw new IllegalArgumentException("size cannot be 0 or negative");
189 try {
190 ssc.setOption(StandardSocketOptions.SO_RCVBUF, size);
191 } catch (IOException x) {
192 Net.translateToSocketException(x);
193 }
194 }
195
196 public int getReceiveBufferSize() throws SocketException {
197 try {
198 return ssc.getOption(StandardSocketOptions.SO_RCVBUF).intValue();
199 } catch (IOException x) {
200 Net.translateToSocketException(x);
201 return -1; // Never happens
202 }
203 }
204
205 }