author | alanb |
Thu, 08 Feb 2018 10:55:21 +0000 | |
changeset 48761 | 74c1fa26435a |
parent 47216 | 71c04702a3d5 |
child 49001 | ce06058197a4 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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package sun.nio.ch; |
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||
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import java.io.IOException; |
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import java.net.DatagramPacket; |
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import java.net.DatagramSocket; |
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import java.net.DatagramSocketImpl; |
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import java.net.InetAddress; |
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import java.net.InetSocketAddress; |
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import java.net.NetworkInterface; |
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import java.net.SocketAddress; |
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import java.net.SocketException; |
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import java.net.SocketOption; |
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import java.net.SocketTimeoutException; |
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import java.net.StandardSocketOptions; |
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import java.nio.ByteBuffer; |
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import java.nio.channels.ClosedChannelException; |
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import java.nio.channels.DatagramChannel; |
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import java.nio.channels.IllegalBlockingModeException; |
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||
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// Make a datagram-socket channel look like a datagram socket. |
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// |
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// The methods in this class are defined in exactly the same order as in |
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// java.net.DatagramSocket so as to simplify tracking future changes to that |
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// class. |
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// |
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||
53 |
public class DatagramSocketAdaptor |
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extends DatagramSocket |
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{ |
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||
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// The channel being adapted |
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private final DatagramChannelImpl dc; |
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||
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// Timeout "option" value for receives |
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private volatile int timeout; |
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|
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// ## super will create a useless impl |
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64 |
private DatagramSocketAdaptor(DatagramChannelImpl dc) throws IOException { |
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65 |
// Invoke the DatagramSocketAdaptor(SocketAddress) constructor, |
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// passing a dummy DatagramSocketImpl object to aovid any native |
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// resource allocation in super class and invoking our bind method |
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// before the dc field is initialized. |
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super(dummyDatagramSocket); |
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this.dc = dc; |
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} |
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||
73 |
public static DatagramSocket create(DatagramChannelImpl dc) { |
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try { |
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return new DatagramSocketAdaptor(dc); |
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} catch (IOException x) { |
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throw new Error(x); |
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} |
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} |
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80 |
||
81 |
private void connectInternal(SocketAddress remote) |
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82 |
throws SocketException |
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{ |
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InetSocketAddress isa = Net.asInetSocketAddress(remote); |
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85 |
int port = isa.getPort(); |
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86 |
if (port < 0 || port > 0xFFFF) |
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throw new IllegalArgumentException("connect: " + port); |
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88 |
if (remote == null) |
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throw new IllegalArgumentException("connect: null address"); |
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if (isClosed()) |
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return; |
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try { |
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dc.connect(remote); |
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} catch (Exception x) { |
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Net.translateToSocketException(x); |
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} |
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} |
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||
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public void bind(SocketAddress local) throws SocketException { |
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try { |
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if (local == null) |
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local = new InetSocketAddress(0); |
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dc.bind(local); |
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} catch (Exception x) { |
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Net.translateToSocketException(x); |
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} |
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} |
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||
109 |
public void connect(InetAddress address, int port) { |
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110 |
try { |
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connectInternal(new InetSocketAddress(address, port)); |
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} catch (SocketException x) { |
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// Yes, j.n.DatagramSocket really does this |
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} |
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} |
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public void connect(SocketAddress remote) throws SocketException { |
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if (remote == null) |
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throw new IllegalArgumentException("Address can't be null"); |
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120 |
connectInternal(remote); |
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} |
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||
123 |
public void disconnect() { |
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124 |
try { |
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125 |
dc.disconnect(); |
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126 |
} catch (IOException x) { |
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127 |
throw new Error(x); |
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128 |
} |
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129 |
} |
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130 |
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131 |
public boolean isBound() { |
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return dc.localAddress() != null; |
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} |
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135 |
public boolean isConnected() { |
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return dc.remoteAddress() != null; |
2 | 137 |
} |
138 |
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139 |
public InetAddress getInetAddress() { |
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140 |
return (isConnected() |
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141 |
? Net.asInetSocketAddress(dc.remoteAddress()).getAddress() |
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142 |
: null); |
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143 |
} |
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144 |
||
145 |
public int getPort() { |
|
146 |
return (isConnected() |
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147 |
? Net.asInetSocketAddress(dc.remoteAddress()).getPort() |
|
148 |
: -1); |
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149 |
} |
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150 |
||
151 |
public void send(DatagramPacket p) throws IOException { |
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152 |
synchronized (dc.blockingLock()) { |
|
153 |
if (!dc.isBlocking()) |
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154 |
throw new IllegalBlockingModeException(); |
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155 |
try { |
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synchronized (p) { |
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157 |
ByteBuffer bb = ByteBuffer.wrap(p.getData(), |
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158 |
p.getOffset(), |
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p.getLength()); |
|
160 |
if (dc.isConnected()) { |
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161 |
if (p.getAddress() == null) { |
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162 |
// Legacy DatagramSocket will send in this case |
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// and set address and port of the packet |
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InetSocketAddress isa = (InetSocketAddress) |
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dc.remoteAddress(); |
2 | 166 |
p.setPort(isa.getPort()); |
167 |
p.setAddress(isa.getAddress()); |
|
168 |
dc.write(bb); |
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} else { |
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// Target address may not match connected address |
|
171 |
dc.send(bb, p.getSocketAddress()); |
|
172 |
} |
|
173 |
} else { |
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174 |
// Not connected so address must be valid or throw |
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175 |
dc.send(bb, p.getSocketAddress()); |
|
176 |
} |
|
177 |
} |
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178 |
} catch (IOException x) { |
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179 |
Net.translateException(x); |
|
180 |
} |
|
181 |
} |
|
182 |
} |
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183 |
||
184 |
// Must hold dc.blockingLock() |
|
185 |
// |
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private SocketAddress receive(ByteBuffer bb) throws IOException { |
2 | 187 |
if (timeout == 0) { |
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188 |
return dc.receive(bb); |
2 | 189 |
} |
190 |
||
191 |
dc.configureBlocking(false); |
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192 |
try { |
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SocketAddress sender; |
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if ((sender = dc.receive(bb)) != null) |
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195 |
return sender; |
2 | 196 |
long to = timeout; |
197 |
for (;;) { |
|
198 |
if (!dc.isOpen()) |
|
199 |
throw new ClosedChannelException(); |
|
200 |
long st = System.currentTimeMillis(); |
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201 |
int result = dc.poll(Net.POLLIN, to); |
48761 | 202 |
if (result > 0 && ((result & Net.POLLIN) != 0)) { |
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203 |
if ((sender = dc.receive(bb)) != null) |
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|
204 |
return sender; |
2 | 205 |
} |
206 |
to -= System.currentTimeMillis() - st; |
|
207 |
if (to <= 0) |
|
208 |
throw new SocketTimeoutException(); |
|
209 |
} |
|
210 |
} finally { |
|
48761 | 211 |
try { |
2 | 212 |
dc.configureBlocking(true); |
48761 | 213 |
} catch (ClosedChannelException e) { } |
2 | 214 |
} |
215 |
} |
|
216 |
||
217 |
public void receive(DatagramPacket p) throws IOException { |
|
218 |
synchronized (dc.blockingLock()) { |
|
219 |
if (!dc.isBlocking()) |
|
220 |
throw new IllegalBlockingModeException(); |
|
221 |
try { |
|
222 |
synchronized (p) { |
|
223 |
ByteBuffer bb = ByteBuffer.wrap(p.getData(), |
|
224 |
p.getOffset(), |
|
225 |
p.getLength()); |
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|
226 |
SocketAddress sender = receive(bb); |
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|
227 |
p.setSocketAddress(sender); |
2 | 228 |
p.setLength(bb.position() - p.getOffset()); |
229 |
} |
|
230 |
} catch (IOException x) { |
|
231 |
Net.translateException(x); |
|
232 |
} |
|
233 |
} |
|
234 |
} |
|
235 |
||
236 |
public InetAddress getLocalAddress() { |
|
237 |
if (isClosed()) |
|
238 |
return null; |
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239 |
SocketAddress local = dc.localAddress(); |
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|
240 |
if (local == null) |
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|
241 |
local = new InetSocketAddress(0); |
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|
242 |
InetAddress result = ((InetSocketAddress)local).getAddress(); |
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|
243 |
SecurityManager sm = System.getSecurityManager(); |
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|
244 |
if (sm != null) { |
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|
245 |
try { |
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|
246 |
sm.checkConnect(result.getHostAddress(), -1); |
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|
247 |
} catch (SecurityException x) { |
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|
248 |
return new InetSocketAddress(0).getAddress(); |
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|
249 |
} |
2 | 250 |
} |
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|
251 |
return result; |
2 | 252 |
} |
253 |
||
254 |
public int getLocalPort() { |
|
255 |
if (isClosed()) |
|
256 |
return -1; |
|
257 |
try { |
|
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|
258 |
SocketAddress local = dc.getLocalAddress(); |
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|
259 |
if (local != null) { |
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|
260 |
return ((InetSocketAddress)local).getPort(); |
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|
261 |
} |
2 | 262 |
} catch (Exception x) { |
263 |
} |
|
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|
264 |
return 0; |
2 | 265 |
} |
266 |
||
267 |
public void setSoTimeout(int timeout) throws SocketException { |
|
268 |
this.timeout = timeout; |
|
269 |
} |
|
270 |
||
271 |
public int getSoTimeout() throws SocketException { |
|
272 |
return timeout; |
|
273 |
} |
|
274 |
||
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|
275 |
private void setBooleanOption(SocketOption<Boolean> name, boolean value) |
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|
276 |
throws SocketException |
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|
277 |
{ |
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|
278 |
try { |
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|
279 |
dc.setOption(name, value); |
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|
280 |
} catch (IOException x) { |
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|
281 |
Net.translateToSocketException(x); |
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|
282 |
} |
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|
283 |
} |
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|
284 |
|
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|
285 |
private void setIntOption(SocketOption<Integer> name, int value) |
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|
286 |
throws SocketException |
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|
287 |
{ |
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|
288 |
try { |
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|
289 |
dc.setOption(name, value); |
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|
290 |
} catch (IOException x) { |
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|
291 |
Net.translateToSocketException(x); |
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|
292 |
} |
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|
293 |
} |
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|
294 |
|
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|
295 |
private boolean getBooleanOption(SocketOption<Boolean> name) throws SocketException { |
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|
296 |
try { |
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|
297 |
return dc.getOption(name).booleanValue(); |
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|
298 |
} catch (IOException x) { |
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|
299 |
Net.translateToSocketException(x); |
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|
300 |
return false; // keep compiler happy |
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|
301 |
} |
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|
302 |
} |
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|
303 |
|
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|
304 |
private int getIntOption(SocketOption<Integer> name) throws SocketException { |
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|
305 |
try { |
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|
306 |
return dc.getOption(name).intValue(); |
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|
307 |
} catch (IOException x) { |
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|
308 |
Net.translateToSocketException(x); |
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|
309 |
return -1; // keep compiler happy |
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|
310 |
} |
2 | 311 |
} |
312 |
||
313 |
public void setSendBufferSize(int size) throws SocketException { |
|
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if (size <= 0) |
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throw new IllegalArgumentException("Invalid send size"); |
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setIntOption(StandardSocketOptions.SO_SNDBUF, size); |
2 | 317 |
} |
318 |
||
319 |
public int getSendBufferSize() throws SocketException { |
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return getIntOption(StandardSocketOptions.SO_SNDBUF); |
2 | 321 |
} |
322 |
||
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public void setReceiveBufferSize(int size) throws SocketException { |
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if (size <= 0) |
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throw new IllegalArgumentException("Invalid receive size"); |
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setIntOption(StandardSocketOptions.SO_RCVBUF, size); |
2 | 327 |
} |
328 |
||
329 |
public int getReceiveBufferSize() throws SocketException { |
|
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return getIntOption(StandardSocketOptions.SO_RCVBUF); |
2 | 331 |
} |
332 |
||
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public void setReuseAddress(boolean on) throws SocketException { |
|
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setBooleanOption(StandardSocketOptions.SO_REUSEADDR, on); |
2 | 335 |
} |
336 |
||
337 |
public boolean getReuseAddress() throws SocketException { |
|
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return getBooleanOption(StandardSocketOptions.SO_REUSEADDR); |
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|
2 | 340 |
} |
341 |
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342 |
public void setBroadcast(boolean on) throws SocketException { |
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setBooleanOption(StandardSocketOptions.SO_BROADCAST, on); |
2 | 344 |
} |
345 |
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346 |
public boolean getBroadcast() throws SocketException { |
|
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return getBooleanOption(StandardSocketOptions.SO_BROADCAST); |
2 | 348 |
} |
349 |
||
350 |
public void setTrafficClass(int tc) throws SocketException { |
|
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setIntOption(StandardSocketOptions.IP_TOS, tc); |
2 | 352 |
} |
353 |
||
354 |
public int getTrafficClass() throws SocketException { |
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return getIntOption(StandardSocketOptions.IP_TOS); |
2 | 356 |
} |
357 |
||
358 |
public void close() { |
|
359 |
try { |
|
360 |
dc.close(); |
|
361 |
} catch (IOException x) { |
|
362 |
throw new Error(x); |
|
363 |
} |
|
364 |
} |
|
365 |
||
366 |
public boolean isClosed() { |
|
367 |
return !dc.isOpen(); |
|
368 |
} |
|
369 |
||
370 |
public DatagramChannel getChannel() { |
|
371 |
return dc; |
|
372 |
} |
|
373 |
||
374 |
/* |
|
375 |
* A dummy implementation of DatagramSocketImpl that can be passed to the |
|
376 |
* DatagramSocket constructor so that no native resources are allocated in |
|
377 |
* super class. |
|
378 |
*/ |
|
379 |
private static final DatagramSocketImpl dummyDatagramSocket |
|
380 |
= new DatagramSocketImpl() |
|
381 |
{ |
|
382 |
protected void create() throws SocketException {} |
|
383 |
||
384 |
protected void bind(int lport, InetAddress laddr) throws SocketException {} |
|
385 |
||
386 |
protected void send(DatagramPacket p) throws IOException {} |
|
387 |
||
388 |
protected int peek(InetAddress i) throws IOException { return 0; } |
|
389 |
||
390 |
protected int peekData(DatagramPacket p) throws IOException { return 0; } |
|
391 |
||
392 |
protected void receive(DatagramPacket p) throws IOException {} |
|
393 |
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@Deprecated |
2 | 395 |
protected void setTTL(byte ttl) throws IOException {} |
396 |
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@Deprecated |
2 | 398 |
protected byte getTTL() throws IOException { return 0; } |
399 |
||
400 |
protected void setTimeToLive(int ttl) throws IOException {} |
|
401 |
||
402 |
protected int getTimeToLive() throws IOException { return 0;} |
|
403 |
||
404 |
protected void join(InetAddress inetaddr) throws IOException {} |
|
405 |
||
406 |
protected void leave(InetAddress inetaddr) throws IOException {} |
|
407 |
||
408 |
protected void joinGroup(SocketAddress mcastaddr, |
|
409 |
NetworkInterface netIf) throws IOException {} |
|
410 |
||
411 |
protected void leaveGroup(SocketAddress mcastaddr, |
|
412 |
NetworkInterface netIf) throws IOException {} |
|
413 |
||
414 |
protected void close() {} |
|
415 |
||
416 |
public Object getOption(int optID) throws SocketException { return null;} |
|
417 |
||
418 |
public void setOption(int optID, Object value) throws SocketException {} |
|
419 |
}; |
|
420 |
} |