Create pass through with Mule ESB 2.2.1

StackOverflow https://stackoverflow.com/questions/2094757

  •  21-09-2019
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Question

I'm attempting to set up a config file for Mule ESB 2.2.1 that routes incoming requests to another box. This seems straight forward, but I am getting connection refused exceptions and I'm not sure why.

Here is the model from my Mule configuration file:

<model name="ProxySample">
    <service name="HttpProxyService">
        <inbound>
            <http:inbound-endpoint address="http://localhost:8787" synchronous="true"/>
        </inbound>
        <outbound>
            <pass-through-router>
                <outbound-endpoint address="http://server2.xyz.com:8080#[header:http.request]" synchronous="true"/>
            </pass-through-router>
        </outbound>
    </service>
</model>

I am browsing to http://localhost:8787/my-site in my browser, thinking that it will route to http://server2.xyz.com:8080/my-site, but I get a connection refused error.

Here is the console output from the Mule server:

**********************************************************************
* Mule ESB and Integration Platform                                  *
* Version: 2.2.1 Build: 14422                                        *
* MuleSource, Inc.                                                   *
* For more information go to http://mule.mulesource.org              *
*                                                                    *
* Server started: 1/19/10 10:43 AM                                   *
* Server ID: 6802537d-0511-11df-bb89-710580f6c729                    *
* JDK: 1.6.0_18 (mixed mode, sharing)                                *
* OS encoding: UTF-8, Mule encoding: UTF-8                           *
* OS: Windows XP - Service Pack 3 (5.1, x86)                         *
* Host:                                      *
*                                                                    *
* Agents Running: None                                               *
**********************************************************************
INFO  2010-01-19 10:43:50,681 [connector.http.0.receiver.2] org.mule.transport.http.HttpClientMessageDispatcher: Connected: endpoint.outbound.http://localhost:8080#[header:http.request]
ERROR 2010-01-19 10:43:54,665 [connector.http.0.receiver.2] org.mule.DefaultExceptionStrategy: 
********************************************************************************
Message               : Failed to route event via endpoint: org.mule.endpoint.DynamicURIOutboundEndpoint@6645e149. Message payload is of type: GetMethod
Type                  : org.mule.api.transport.DispatchException
Code                  : MULE_ERROR-42999
Payload               : org.apache.commons.httpclient.methods.GetMethod@d67067
JavaDoc               : http://www.mulesource.org/docs/site/current2/apidocs/org/mule/api/transport/DispatchException.html
********************************************************************************
Exception stack is:
1. Connection refused: connect (java.net.ConnectException)
  java.net.PlainSocketImpl:-2 (null)
2. Failed to route event via endpoint: org.mule.endpoint.DynamicURIOutboundEndpoint@6645e149. Message payload is of type: GetMethod (org.mule.api.transport.DispatchException)
  org.mule.transport.http.HttpClientMessageDispatcher:127 (http://www.mulesource.org/docs/site/current2/apidocs/org/mule/api/transport/DispatchException.html)
********************************************************************************
Root Exception stack trace:
java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:525)
    at java.net.Socket.connect(Socket.java:475)
    at java.net.Socket.<init>(Socket.java:372)
    at java.net.Socket.<init>(Socket.java:246)
    at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)
    at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)
    at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
    at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
    at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
    at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
    at org.mule.transport.http.HttpClientMessageDispatcher.execute(HttpClientMessageDispatcher.java:120)
    at org.mule.transport.http.HttpClientMessageDispatcher.doSend(HttpClientMessageDispatcher.java:258)
    at org.mule.transport.AbstractMessageDispatcher.send(AbstractMessageDispatcher.java:163)
    at org.mule.transport.AbstractConnector.send(AbstractConnector.java:2016)
    at org.mule.endpoint.DynamicURIOutboundEndpoint.send(DynamicURIOutboundEndpoint.java:178)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:327)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:213)
    at org.mule.routing.outbound.AbstractOutboundRouter$2.doInTransaction(AbstractOutboundRouter.java:152)
    at org.mule.transaction.TransactionTemplate.execute(TransactionTemplate.java:99)
    at org.mule.routing.outbound.AbstractOutboundRouter.send(AbstractOutboundRouter.java:159)
    at org.mule.routing.outbound.ChainingRouter.route(ChainingRouter.java:123)
    at org.mule.routing.outbound.DefaultOutboundRouterCollection$1.doInTransaction(DefaultOutboundRouterCollection.java:88)
    at org.mule.transaction.TransactionTemplate.execute(TransactionTemplate.java:45)
    at org.mule.routing.outbound.DefaultOutboundRouterCollection.route(DefaultOutboundRouterCollection.java:93)
    at org.mule.service.AbstractService.sendToOutboundRouter(AbstractService.java:892)
    at org.mule.model.seda.SedaService.doSend(SedaService.java:258)
    at org.mule.service.AbstractService.sendEvent(AbstractService.java:500)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:354)
    at org.mule.routing.inbound.DefaultInboundRouterCollection.send(DefaultInboundRouterCollection.java:228)
    at org.mule.routing.inbound.DefaultInboundRouterCollection.route(DefaultInboundRouterCollection.java:188)
    at org.mule.transport.AbstractMessageReceiver$DefaultInternalMessageListener.onMessage(AbstractMessageReceiver.java:364)
    at org.mule.transport.AbstractMessageReceiver.routeMessage(AbstractMessageReceiver.java:252)
    at org.mule.transport.AbstractMessageReceiver.routeMessage(AbstractMessageReceiver.java:193)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.doRequest(HttpMessageReceiver.java:273)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.processRequest(HttpMessageReceiver.java:227)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.run(HttpMessageReceiver.java:190)
    at org.mule.work.WorkerContext.run(WorkerContext.java:310)
    at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061)
    at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
    at java.lang.Thread.run(Thread.java:619)

********************************************************************************

INFO  2010-01-19 10:43:54,665 [connector.http.0.receiver.2] org.mule.transaction.TransactionTemplate: Exception Caught in Transaction template.  Handing off to exception handler: org.mule.service.DefaultServiceExceptionStrategy@1412e75
ERROR 2010-01-19 10:43:54,665 [connector.http.0.receiver.2] org.mule.service.DefaultServiceExceptionStrategy: 
********************************************************************************
Message               : Failed to route event via endpoint: org.mule.endpoint.DynamicURIOutboundEndpoint@6645e149. Message payload is of type: GetMethod
Type                  : org.mule.api.transport.DispatchException
Code                  : MULE_ERROR-42999
Payload               : org.apache.commons.httpclient.methods.GetMethod@d67067
JavaDoc               : http://www.mulesource.org/docs/site/current2/apidocs/org/mule/api/transport/DispatchException.html
********************************************************************************
Exception stack is:
1. Connection refused: connect (java.net.ConnectException)
  java.net.PlainSocketImpl:-2 (null)
2. Failed to route event via endpoint: org.mule.endpoint.DynamicURIOutboundEndpoint@6645e149. Message payload is of type: GetMethod (org.mule.api.transport.DispatchException)
  org.mule.transport.http.HttpClientMessageDispatcher:127 (http://www.mulesource.org/docs/site/current2/apidocs/org/mule/api/transport/DispatchException.html)
********************************************************************************
Root Exception stack trace:
java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:525)
    at java.net.Socket.connect(Socket.java:475)
    at java.net.Socket.<init>(Socket.java:372)
    at java.net.Socket.<init>(Socket.java:246)
    at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)
    at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)
    at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
    at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
    at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
    at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
    at org.mule.transport.http.HttpClientMessageDispatcher.execute(HttpClientMessageDispatcher.java:120)
    at org.mule.transport.http.HttpClientMessageDispatcher.doSend(HttpClientMessageDispatcher.java:258)
    at org.mule.transport.AbstractMessageDispatcher.send(AbstractMessageDispatcher.java:163)
    at org.mule.transport.AbstractConnector.send(AbstractConnector.java:2016)
    at org.mule.endpoint.DynamicURIOutboundEndpoint.send(DynamicURIOutboundEndpoint.java:178)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:327)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:213)
    at org.mule.routing.outbound.AbstractOutboundRouter$2.doInTransaction(AbstractOutboundRouter.java:152)
    at org.mule.transaction.TransactionTemplate.execute(TransactionTemplate.java:99)
    at org.mule.routing.outbound.AbstractOutboundRouter.send(AbstractOutboundRouter.java:159)
    at org.mule.routing.outbound.ChainingRouter.route(ChainingRouter.java:123)
    at org.mule.routing.outbound.DefaultOutboundRouterCollection$1.doInTransaction(DefaultOutboundRouterCollection.java:88)
    at org.mule.transaction.TransactionTemplate.execute(TransactionTemplate.java:45)
    at org.mule.routing.outbound.DefaultOutboundRouterCollection.route(DefaultOutboundRouterCollection.java:93)
    at org.mule.service.AbstractService.sendToOutboundRouter(AbstractService.java:892)
    at org.mule.model.seda.SedaService.doSend(SedaService.java:258)
    at org.mule.service.AbstractService.sendEvent(AbstractService.java:500)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:354)
    at org.mule.routing.inbound.DefaultInboundRouterCollection.send(DefaultInboundRouterCollection.java:228)
    at org.mule.routing.inbound.DefaultInboundRouterCollection.route(DefaultInboundRouterCollection.java:188)
    at org.mule.transport.AbstractMessageReceiver$DefaultInternalMessageListener.onMessage(AbstractMessageReceiver.java:364)
    at org.mule.transport.AbstractMessageReceiver.routeMessage(AbstractMessageReceiver.java:252)
    at org.mule.transport.AbstractMessageReceiver.routeMessage(AbstractMessageReceiver.java:193)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.doRequest(HttpMessageReceiver.java:273)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.processRequest(HttpMessageReceiver.java:227)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.run(HttpMessageReceiver.java:190)
    at org.mule.work.WorkerContext.run(WorkerContext.java:310)
    at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061)
    at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
    at java.lang.Thread.run(Thread.java:619)

********************************************************************************

ERROR 2010-01-19 10:43:54,665 [connector.http.0.receiver.2] org.mule.service.DefaultServiceExceptionStrategy: 
********************************************************************************
Message               : Failed to route event via endpoint: org.mule.endpoint.DynamicURIOutboundEndpoint@6645e149. Message payload is of type: GetMethod
Type                  : org.mule.api.transport.DispatchException
Code                  : MULE_ERROR-42999
Payload               : org.apache.commons.httpclient.methods.GetMethod@d67067
JavaDoc               : http://www.mulesource.org/docs/site/current2/apidocs/org/mule/api/transport/DispatchException.html
********************************************************************************
Exception stack is:
1. Connection refused: connect (java.net.ConnectException)
  java.net.PlainSocketImpl:-2 (null)
2. Failed to route event via endpoint: org.mule.endpoint.DynamicURIOutboundEndpoint@6645e149. Message payload is of type: GetMethod (org.mule.api.transport.DispatchException)
  org.mule.transport.http.HttpClientMessageDispatcher:127 (http://www.mulesource.org/docs/site/current2/apidocs/org/mule/api/transport/DispatchException.html)
********************************************************************************
Root Exception stack trace:
java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:525)
    at java.net.Socket.connect(Socket.java:475)
    at java.net.Socket.<init>(Socket.java:372)
    at java.net.Socket.<init>(Socket.java:246)
    at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)
    at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)
    at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
    at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
    at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
    at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
    at org.mule.transport.http.HttpClientMessageDispatcher.execute(HttpClientMessageDispatcher.java:120)
    at org.mule.transport.http.HttpClientMessageDispatcher.doSend(HttpClientMessageDispatcher.java:258)
    at org.mule.transport.AbstractMessageDispatcher.send(AbstractMessageDispatcher.java:163)
    at org.mule.transport.AbstractConnector.send(AbstractConnector.java:2016)
    at org.mule.endpoint.DynamicURIOutboundEndpoint.send(DynamicURIOutboundEndpoint.java:178)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:327)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:213)
    at org.mule.routing.outbound.AbstractOutboundRouter$2.doInTransaction(AbstractOutboundRouter.java:152)
    at org.mule.transaction.TransactionTemplate.execute(TransactionTemplate.java:99)
    at org.mule.routing.outbound.AbstractOutboundRouter.send(AbstractOutboundRouter.java:159)
    at org.mule.routing.outbound.ChainingRouter.route(ChainingRouter.java:123)
    at org.mule.routing.outbound.DefaultOutboundRouterCollection$1.doInTransaction(DefaultOutboundRouterCollection.java:88)
    at org.mule.transaction.TransactionTemplate.execute(TransactionTemplate.java:45)
    at org.mule.routing.outbound.DefaultOutboundRouterCollection.route(DefaultOutboundRouterCollection.java:93)
    at org.mule.service.AbstractService.sendToOutboundRouter(AbstractService.java:892)
    at org.mule.model.seda.SedaService.doSend(SedaService.java:258)
    at org.mule.service.AbstractService.sendEvent(AbstractService.java:500)
    at org.mule.DefaultMuleSession.sendEvent(DefaultMuleSession.java:354)
    at org.mule.routing.inbound.DefaultInboundRouterCollection.send(DefaultInboundRouterCollection.java:228)
    at org.mule.routing.inbound.DefaultInboundRouterCollection.route(DefaultInboundRouterCollection.java:188)
    at org.mule.transport.AbstractMessageReceiver$DefaultInternalMessageListener.onMessage(AbstractMessageReceiver.java:364)
    at org.mule.transport.AbstractMessageReceiver.routeMessage(AbstractMessageReceiver.java:252)
    at org.mule.transport.AbstractMessageReceiver.routeMessage(AbstractMessageReceiver.java:193)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.doRequest(HttpMessageReceiver.java:273)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.processRequest(HttpMessageReceiver.java:227)
    at org.mule.transport.http.HttpMessageReceiver$HttpWorker.run(HttpMessageReceiver.java:190)
    at org.mule.work.WorkerContext.run(WorkerContext.java:310)
    at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061)
    at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
    at java.lang.Thread.run(Thread.java:619)

********************************************************************************
Was it helpful?

Solution

My project wasn't cleaning correctly in Eclipse. Once I ran the correct configuration file, the example above worked as intended.

OTHER TIPS

That should definitelly work, if you wan't to make the service more readable, you can also write the implicit component : 

<model name="ProxySample">
    <service name="HttpProxyService">
        <inbound>
            <http:inbound-endpoint address="http://localhost:8787" synchronous="true"/>
        </inbound>

        <bridge-component />

        <outbound>
            <pass-through-router>
                <outbound-endpoint address="http://server2.xyz.com:8080#[header:http.request]" synchronous="true"/>
            </pass-through-router>
        </outbound>
    </service>
</model>
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