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package org.mule.providers.udp; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.impl.MuleMessage; |
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import org.mule.providers.AbstractMessageReceiver; |
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import org.mule.providers.udp.i18n.UdpMessages; |
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import org.mule.umo.UMOComponent; |
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import org.mule.umo.UMOException; |
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import org.mule.umo.UMOMessage; |
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import org.mule.umo.endpoint.UMOEndpoint; |
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import org.mule.umo.lifecycle.Disposable; |
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import org.mule.umo.lifecycle.InitialisationException; |
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import org.mule.umo.provider.UMOConnector; |
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import org.mule.umo.provider.UMOMessageAdapter; |
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import org.mule.umo.transformer.UMOTransformer; |
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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.InetAddress; |
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import java.net.SocketTimeoutException; |
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import java.net.URI; |
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import java.net.UnknownHostException; |
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|
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import javax.resource.spi.work.Work; |
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import javax.resource.spi.work.WorkException; |
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import javax.resource.spi.work.WorkManager; |
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|
42 | 0 | public class UdpMessageReceiver extends AbstractMessageReceiver implements Work |
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{ |
44 | 0 | protected DatagramSocket socket = null; |
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protected InetAddress inetAddress; |
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protected int bufferSize; |
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private URI uri; |
48 | 0 | protected UMOTransformer responseTransformer = null; |
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|
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public UdpMessageReceiver(UMOConnector connector, UMOComponent component, UMOEndpoint endpoint) |
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throws InitialisationException |
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{ |
53 | 0 | super(connector, component, endpoint); |
54 | 0 | bufferSize = ((UdpConnector)connector).getReceiveBufferSize(); |
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|
56 | 0 | uri = endpoint.getEndpointURI().getUri(); |
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|
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try |
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{ |
60 | 0 | if(!"null".equalsIgnoreCase(uri.getHost())) |
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{ |
62 | 0 | inetAddress = InetAddress.getByName(uri.getHost()); |
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} |
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} |
65 | 0 | catch (UnknownHostException e) |
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{ |
67 | 0 | throw new InitialisationException(UdpMessages.failedToLocateHost(uri), e, this); |
68 | 0 | } |
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|
70 | 0 | responseTransformer = getResponseTransformer(); |
71 | 0 | } |
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|
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protected void doConnect() throws Exception |
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{ |
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try |
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{ |
77 | 0 | socket = ((UdpConnector)connector).getSocket(endpoint); |
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} |
79 | 0 | catch (Exception e) |
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{ |
81 | 0 | throw new InitialisationException(UdpMessages.failedToBind(uri), e, this); |
82 | 0 | } |
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|
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try |
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{ |
86 | 0 | getWorkManager().scheduleWork(this, WorkManager.INDEFINITE, null, connector); |
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} |
88 | 0 | catch (WorkException e) |
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{ |
90 | 0 | throw new InitialisationException(CoreMessages.failedToScheduleWork(), e, this); |
91 | 0 | } |
92 | 0 | } |
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|
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protected void doDisconnect() throws Exception |
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{ |
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|
97 | 0 | disposing.set(true); |
98 | 0 | if (socket != null) |
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{ |
100 | 0 | socket.close(); |
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} |
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|
103 | 0 | } |
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|
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protected void doStart() throws UMOException |
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{ |
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|
108 | 0 | } |
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|
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protected void doStop() throws UMOException |
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{ |
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|
113 | 0 | } |
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|
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protected UMOTransformer getResponseTransformer() throws InitialisationException |
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{ |
117 | 0 | UMOTransformer transformer = component.getDescriptor().getResponseTransformer(); |
118 | 0 | if (transformer == null) |
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{ |
120 | 0 | return connector.getDefaultResponseTransformer(); |
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} |
122 | 0 | return transformer; |
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} |
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|
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protected DatagramSocket createSocket(URI uri, InetAddress inetAddress) throws IOException |
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{ |
127 | 0 | return new DatagramSocket(uri.getPort(), inetAddress); |
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} |
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|
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|
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|
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|
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public DatagramSocket getSocket() |
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{ |
135 | 0 | return socket; |
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} |
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|
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protected DatagramPacket createPacket() |
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{ |
140 | 0 | DatagramPacket packet = new DatagramPacket(new byte[bufferSize], bufferSize); |
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|
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|
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|
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|
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|
146 | 0 | return packet; |
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} |
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|
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public void run() |
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{ |
151 | 0 | while (!disposing.get()) |
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{ |
153 | 0 | if (connector.isStarted()) |
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{ |
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|
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try |
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{ |
158 | 0 | DatagramPacket packet = createPacket(); |
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try |
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{ |
161 | 0 | socket.receive(packet); |
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|
163 | 0 | if (logger.isTraceEnabled()) |
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{ |
165 | 0 | logger.trace("Received packet on: " + uri); |
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} |
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|
168 | 0 | Work work = createWork(packet); |
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try |
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{ |
171 | 0 | getWorkManager().scheduleWork(work, WorkManager.INDEFINITE, null, connector); |
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} |
173 | 0 | catch (WorkException e) |
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{ |
175 | 0 | logger.error("Udp receiver interrupted: " + e.getMessage(), e); |
176 | 0 | } |
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} |
178 | 0 | catch (SocketTimeoutException e) |
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{ |
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|
181 | 0 | } |
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|
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} |
184 | 0 | catch (Exception e) |
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{ |
186 | 0 | if (!connector.isDisposed() && !disposing.get()) |
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{ |
188 | 0 | logger.debug("Accept failed on socket: " + e, e); |
189 | 0 | handleException(e); |
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} |
191 | 0 | } |
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} |
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} |
194 | 0 | } |
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|
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public void release() |
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{ |
198 | 0 | dispose(); |
199 | 0 | } |
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|
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protected void doDispose() |
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{ |
203 | 0 | if (socket != null && !socket.isClosed()) |
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{ |
205 | 0 | logger.debug("Closing Udp connection: " + uri); |
206 | 0 | socket.close(); |
207 | 0 | logger.info("Closed Udp connection: " + uri); |
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} |
209 | 0 | } |
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|
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protected Work createWork(DatagramPacket packet) throws IOException |
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{ |
213 | 0 | return new UdpWorker(new DatagramSocket(0), packet); |
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} |
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|
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protected class UdpWorker implements Work, Disposable |
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{ |
218 | 0 | private DatagramSocket socket = null; |
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private DatagramPacket packet; |
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|
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public UdpWorker(DatagramSocket socket, DatagramPacket packet) |
222 | 0 | { |
223 | 0 | this.socket = socket; |
224 | 0 | this.packet = packet; |
225 | 0 | } |
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|
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public void release() |
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{ |
229 | 0 | dispose(); |
230 | 0 | } |
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|
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public void dispose() |
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{ |
234 | 0 | if (socket != null && !socket.isClosed()) |
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{ |
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try |
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{ |
238 | 0 | socket.close(); |
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} |
240 | 0 | catch (Exception e) |
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{ |
242 | 0 | logger.error("Socket close failed", e); |
243 | 0 | } |
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} |
245 | 0 | socket = null; |
246 | 0 | } |
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|
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|
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|
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|
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public void run() |
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{ |
253 | 0 | UMOMessage returnMessage = null; |
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try |
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{ |
256 | 0 | UMOMessageAdapter adapter = connector.getMessageAdapter(packet); |
257 | 0 | returnMessage = routeMessage(new MuleMessage(adapter), endpoint.isSynchronous()); |
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|
259 | 0 | if (returnMessage != null) |
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{ |
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byte[] data; |
262 | 0 | if (responseTransformer != null) |
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{ |
264 | 0 | Object response = responseTransformer.transform(returnMessage.getPayload()); |
265 | 0 | if (response instanceof byte[]) |
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{ |
267 | 0 | data = (byte[])response; |
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} |
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else |
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{ |
271 | 0 | data = response.toString().getBytes(); |
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} |
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} |
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else |
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{ |
276 | 0 | data = returnMessage.getPayloadAsBytes(); |
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} |
278 | 0 | DatagramPacket result = new DatagramPacket(data, data.length, packet.getAddress(), |
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packet.getPort()); |
280 | 0 | socket.send(result); |
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} |
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} |
283 | 0 | catch (Exception e) |
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{ |
285 | 0 | if (!disposing.get()) |
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{ |
287 | 0 | handleException(e); |
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} |
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} |
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finally |
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{ |
292 | 0 | dispose(); |
293 | 0 | } |
294 | 0 | } |
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} |
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} |