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package org.mule.transport.udp; |
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import org.mule.api.MuleEvent; |
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import org.mule.api.MuleException; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.config.MuleProperties; |
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import org.mule.api.construct.FlowConstruct; |
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import org.mule.api.endpoint.InboundEndpoint; |
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import org.mule.api.lifecycle.CreateException; |
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import org.mule.api.lifecycle.Disposable; |
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import org.mule.api.transport.Connector; |
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import org.mule.api.transport.PropertyScope; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.transport.AbstractMessageReceiver; |
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import org.mule.transport.ConnectException; |
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import org.mule.transport.udp.i18n.UdpMessages; |
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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.SocketAddress; |
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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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import java.util.List; |
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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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|
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import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicBoolean; |
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|
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|
45 | 0 | public class UdpMessageReceiver extends AbstractMessageReceiver implements Work |
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{ |
47 | 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; |
51 | 0 | protected List responseTransformers = null; |
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|
53 | 0 | protected final AtomicBoolean disposing = new AtomicBoolean(false); |
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|
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public UdpMessageReceiver(Connector connector, FlowConstruct flowConstruct, InboundEndpoint endpoint) |
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throws CreateException |
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{ |
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|
59 | 0 | super(connector, flowConstruct, endpoint); |
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|
61 | 0 | bufferSize = ((UdpConnector) connector).getReceiveBufferSize(); |
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|
63 | 0 | uri = endpoint.getEndpointURI().getUri(); |
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|
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try |
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{ |
67 | 0 | if (!"null".equalsIgnoreCase(uri.getHost())) |
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{ |
69 | 0 | inetAddress = InetAddress.getByName(uri.getHost()); |
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} |
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} |
72 | 0 | catch (UnknownHostException e) |
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{ |
74 | 0 | throw new CreateException(UdpMessages.failedToLocateHost(uri), e, this); |
75 | 0 | } |
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|
77 | 0 | responseTransformers = getResponseTransformers(); |
78 | 0 | } |
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|
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@Override |
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protected void doConnect() throws Exception |
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{ |
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try |
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{ |
85 | 0 | socket = ((UdpConnector) connector).getServerSocket(endpoint); |
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} |
87 | 0 | catch (Exception e) |
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{ |
89 | 0 | throw new ConnectException(UdpMessages.failedToBind(uri), e, this); |
90 | 0 | } |
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|
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try |
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{ |
94 | 0 | getWorkManager().scheduleWork(this, WorkManager.INDEFINITE, null, connector); |
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} |
96 | 0 | catch (WorkException e) |
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{ |
98 | 0 | throw new ConnectException(CoreMessages.failedToScheduleWork(), e, this); |
99 | 0 | } |
100 | 0 | } |
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|
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@Override |
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protected void doDisconnect() throws Exception |
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{ |
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|
106 | 0 | disposing.set(true); |
107 | 0 | if (socket != null) |
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{ |
109 | 0 | socket.close(); |
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} |
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|
112 | 0 | } |
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|
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@Override |
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protected void doStart() throws MuleException |
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{ |
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|
118 | 0 | } |
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|
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@Override |
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protected void doStop() throws MuleException |
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{ |
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|
124 | 0 | } |
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|
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protected List getResponseTransformers() |
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{ |
128 | 0 | List transformers = endpoint.getResponseTransformers(); |
129 | 0 | if (transformers == null) |
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{ |
131 | 0 | return connector.getDefaultResponseTransformers(endpoint); |
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} |
133 | 0 | return transformers; |
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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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{ |
138 | 0 | return new DatagramSocket(uri.getPort(), inetAddress); |
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} |
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|
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|
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public DatagramSocket getSocket() |
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{ |
144 | 0 | return socket; |
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} |
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|
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protected DatagramPacket createPacket() |
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{ |
149 | 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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|
155 | 0 | return packet; |
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} |
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|
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public void run() |
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{ |
160 | 0 | while (!disposing.get()) |
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{ |
162 | 0 | if (connector.isStarted()) |
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{ |
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|
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try |
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{ |
167 | 0 | DatagramPacket packet = createPacket(); |
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try |
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{ |
170 | 0 | if (logger.isDebugEnabled()) |
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{ |
172 | 0 | logger.debug("Receiving packet on " + uri); |
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} |
174 | 0 | socket.receive(packet); |
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|
176 | 0 | if (logger.isTraceEnabled()) |
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{ |
178 | 0 | logger.trace("Received packet on: " + uri); |
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} |
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|
181 | 0 | Work work = createWork(packet); |
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try |
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{ |
184 | 0 | getWorkManager().scheduleWork(work, WorkManager.INDEFINITE, null, connector); |
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} |
186 | 0 | catch (WorkException e) |
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{ |
188 | 0 | logger.error("Udp receiver interrupted: " + e.getMessage(), e); |
189 | 0 | } |
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} |
191 | 0 | catch (SocketTimeoutException e) |
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{ |
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|
194 | 0 | } |
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|
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} |
197 | 0 | catch (Exception e) |
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{ |
199 | 0 | if (!connector.isDisposed() && !disposing.get()) |
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{ |
201 | 0 | logger.debug("Accept failed on socket: " + e, e); |
202 | 0 | getConnector().getMuleContext().getExceptionListener().handleException(e); |
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} |
204 | 0 | } |
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} |
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} |
207 | 0 | } |
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|
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public void release() |
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{ |
211 | 0 | dispose(); |
212 | 0 | } |
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|
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@Override |
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protected void doDispose() |
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{ |
217 | 0 | if (socket != null && !socket.isClosed()) |
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{ |
219 | 0 | logger.debug("Closing Udp connection: " + uri); |
220 | 0 | socket.close(); |
221 | 0 | logger.info("Closed Udp connection: " + uri); |
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} |
223 | 0 | } |
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|
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protected Work createWork(DatagramPacket packet) throws IOException |
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{ |
227 | 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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{ |
232 | 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) |
236 | 0 | { |
237 | 0 | this.socket = socket; |
238 | 0 | this.packet = packet; |
239 | 0 | } |
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|
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public void release() |
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{ |
243 | 0 | dispose(); |
244 | 0 | } |
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|
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public void dispose() |
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{ |
248 | 0 | if (socket != null && !socket.isClosed()) |
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{ |
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try |
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{ |
252 | 0 | socket.close(); |
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} |
254 | 0 | catch (Exception e) |
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{ |
256 | 0 | logger.error("Socket close failed", e); |
257 | 0 | } |
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} |
259 | 0 | socket = null; |
260 | 0 | } |
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|
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|
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public void run() |
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{ |
265 | 0 | MuleMessage returnMessage = null; |
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try |
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{ |
268 | 0 | MuleMessage message = createMuleMessage(packet, endpoint.getEncoding()); |
269 | 0 | final SocketAddress clientAddress = socket.getRemoteSocketAddress(); |
270 | 0 | if (clientAddress != null) |
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{ |
272 | 0 | message.setProperty(MuleProperties.MULE_REMOTE_CLIENT_ADDRESS, clientAddress, PropertyScope.INBOUND); |
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} |
274 | 0 | MuleEvent event = routeMessage(message); |
275 | 0 | returnMessage = event == null ? null : event.getMessage(); |
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|
277 | 0 | if (returnMessage != null) |
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{ |
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byte[] data; |
280 | 0 | if (responseTransformers != null) |
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{ |
282 | 0 | returnMessage.applyTransformers(event, responseTransformers); |
283 | 0 | Object response = returnMessage.getPayload(); |
284 | 0 | if (response instanceof byte[]) |
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{ |
286 | 0 | data = (byte[]) response; |
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} |
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else |
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{ |
290 | 0 | data = response.toString().getBytes(); |
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} |
292 | 0 | } |
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else |
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{ |
295 | 0 | data = returnMessage.getPayloadAsBytes(); |
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} |
297 | 0 | DatagramPacket result = new DatagramPacket(data, data.length, packet.getAddress(), |
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packet.getPort()); |
299 | 0 | socket.send(result); |
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} |
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} |
302 | 0 | catch (Exception e) |
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{ |
304 | 0 | if (!disposing.get()) |
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{ |
306 | 0 | getConnector().getMuleContext().getExceptionListener().handleException(e); |
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} |
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} |
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finally |
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{ |
311 | 0 | dispose(); |
312 | 0 | } |
313 | 0 | } |
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} |
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} |