Mule Context missing when receiving a message on TCP inbound endpoint

• User impact:

  High
• Configuration:

  Hide

  CLIENT CONFIGURATION
  --------------------

  <?xml version="1.0" encoding="UTF-8"?>
  <mule xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:spring="http://www.springframework.org/schema/beans" xmlns:vm="http://www.mulesoft.org/schema/mule/vm"
  xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns:http="http://www.mulesoft.org/schema/mule/http"
  xmlns:tcp="http://www.mulesoft.org/schema/mule/tcp"
  xmlns:client="http://www.mulesoft.org/schema/mule/client" xmlns:cxf="http://www.mulesoft.org/schema/mule/cxf"
  xmlns:management="http://www.mulesoft.org/schema/mule/management"
  xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting"
  xmlns:sxc="http://www.mulesoft.org/schema/mule/sxc" xmlns:mule-xml="http://www.mulesoft.org/schema/mule/xml"
  xsi:schemaLocation="
  http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/3.2/mule.xsd
  http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/3.2/mule-vm.xsd
  http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/3.2/mule-jms.xsd
  http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/3.2/mule-http.xsd
  http://www.mulesoft.org/schema/mule/tcp http://www.mulesoft.org/schema/mule/tcp/3.2/mule-tcp.xsd
  http://www.mulesoft.org/schema/mule/client http://www.mulesoft.org/schema/mule/client/3.2/mule-client.xsd
  http://www.mulesoft.org/schema/mule/cxf http://www.mulesoft.org/schema/mule/cxf/3.2/mule-cxf.xsd
  http://www.mulesoft.org/schema/mule/management http://www.mulesoft.org/schema/mule/management/3.2/mule-management.xsd
  http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/3.2/mule-scripting.xsd
  http://www.mulesoft.org/schema/mule/sxc http://www.mulesoft.org/schema/mule/sxc/3.2/mule-sxc.xsd
  http://www.mulesoft.org/schema/mule/xml http://www.mulesoft.org/schema/mule/xml/3.2/mule-xml.xsd
  http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <tcp:connector name="tcpConnector" validateConnections="false">
  <tcp:safe-protocol payloadOnly="false" />
  </tcp:connector>
  <model name="tcp-test">
  <service name="client">
  <inbound>
  <http:inbound-endpoint address="http://localhost:8080/service" ></http:inbound-endpoint>
  </inbound>
  <outbound>
  <pass-through-router>
  <tcp:outbound-endpoint address="tcp://localhost:8200/tcpeventprocessor"
  exchange-pattern="request-response"/>
  </pass-through-router>
  </outbound>
  </service>
  </model>
  </mule>

  SERVER CONFIGURATION
  --------------------

  <?xml version="1.0" encoding="UTF-8"?>
  <mule xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:spring="http://www.springframework.org/schema/beans" xmlns:vm="http://www.mulesoft.org/schema/mule/vm"
  xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns:tcp="http://www.mulesoft.org/schema/mule/tcp"
  xmlns:client="http://www.mulesoft.org/schema/mule/client" xmlns:cxf="http://www.mulesoft.org/schema/mule/cxf"
  xmlns:management="http://www.mulesoft.org/schema/mule/management"
  xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting"
  xmlns:sxc="http://www.mulesoft.org/schema/mule/sxc" xmlns:mule-xml="http://www.mulesoft.org/schema/mule/xml"
  xsi:schemaLocation="
  http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/3.2/mule.xsd
  http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/3.2/mule-vm.xsd
  http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/3.2/mule-jms.xsd
  http://www.mulesoft.org/schema/mule/tcp http://www.mulesoft.org/schema/mule/tcp/3.2/mule-tcp.xsd
  http://www.mulesoft.org/schema/mule/client http://www.mulesoft.org/schema/mule/client/3.2/mule-client.xsd
  http://www.mulesoft.org/schema/mule/cxf http://www.mulesoft.org/schema/mule/cxf/3.2/mule-cxf.xsd
  http://www.mulesoft.org/schema/mule/management http://www.mulesoft.org/schema/mule/management/3.2/mule-management.xsd
  http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/3.2/mule-scripting.xsd
  http://www.mulesoft.org/schema/mule/sxc http://www.mulesoft.org/schema/mule/sxc/3.2/mule-sxc.xsd
  http://www.mulesoft.org/schema/mule/xml http://www.mulesoft.org/schema/mule/xml/3.2/mule-xml.xsd
  http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <tcp:connector name="tcpConnector" validateConnections="false">
  <tcp:safe-protocol payloadOnly="false" />
  </tcp:connector>

  <model name="tcp-test2">
  <service name="server">
  <inbound>
  <tcp:inbound-endpoint address="tcp://localhost:8200/tcpeventprocessor" exchange-pattern="request-response" />
  </inbound>
  <echo-component/>
  </service>
  </model>
  </mule>

  Show

  CLIENT CONFIGURATION -------------------- <?xml version="1.0" encoding="UTF-8"?> <mule xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:spring="http://www.springframework.org/schema/beans" xmlns:vm="http://www.mulesoft.org/schema/mule/vm" xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:tcp="http://www.mulesoft.org/schema/mule/tcp" xmlns:client="http://www.mulesoft.org/schema/mule/client" xmlns:cxf="http://www.mulesoft.org/schema/mule/cxf" xmlns:management="http://www.mulesoft.org/schema/mule/management" xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting" xmlns:sxc="http://www.mulesoft.org/schema/mule/sxc" xmlns:mule-xml="http://www.mulesoft.org/schema/mule/xml" xsi:schemaLocation=" http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/3.2/mule.xsd http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/3.2/mule-vm.xsd http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/3.2/mule-jms.xsd http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/3.2/mule-http.xsd http://www.mulesoft.org/schema/mule/tcp http://www.mulesoft.org/schema/mule/tcp/3.2/mule-tcp.xsd http://www.mulesoft.org/schema/mule/client http://www.mulesoft.org/schema/mule/client/3.2/mule-client.xsd http://www.mulesoft.org/schema/mule/cxf http://www.mulesoft.org/schema/mule/cxf/3.2/mule-cxf.xsd http://www.mulesoft.org/schema/mule/management http://www.mulesoft.org/schema/mule/management/3.2/mule-management.xsd http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/3.2/mule-scripting.xsd http://www.mulesoft.org/schema/mule/sxc http://www.mulesoft.org/schema/mule/sxc/3.2/mule-sxc.xsd http://www.mulesoft.org/schema/mule/xml http://www.mulesoft.org/schema/mule/xml/3.2/mule-xml.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <tcp:connector name="tcpConnector" validateConnections="false"> <tcp:safe-protocol payloadOnly="false" /> </tcp:connector> <model name="tcp-test"> <service name="client"> <inbound> <http:inbound-endpoint address="http://localhost:8080/service" ></http:inbound-endpoint> </inbound> <outbound> <pass-through-router> <tcp:outbound-endpoint address="tcp://localhost:8200/tcpeventprocessor" exchange-pattern="request-response"/> </pass-through-router> </outbound> </service> </model> </mule> SERVER CONFIGURATION -------------------- <?xml version="1.0" encoding="UTF-8"?> <mule xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:spring="http://www.springframework.org/schema/beans" xmlns:vm="http://www.mulesoft.org/schema/mule/vm" xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns:tcp="http://www.mulesoft.org/schema/mule/tcp" xmlns:client="http://www.mulesoft.org/schema/mule/client" xmlns:cxf="http://www.mulesoft.org/schema/mule/cxf" xmlns:management="http://www.mulesoft.org/schema/mule/management" xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting" xmlns:sxc="http://www.mulesoft.org/schema/mule/sxc" xmlns:mule-xml="http://www.mulesoft.org/schema/mule/xml" xsi:schemaLocation=" http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/3.2/mule.xsd http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/3.2/mule-vm.xsd http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/3.2/mule-jms.xsd http://www.mulesoft.org/schema/mule/tcp http://www.mulesoft.org/schema/mule/tcp/3.2/mule-tcp.xsd http://www.mulesoft.org/schema/mule/client http://www.mulesoft.org/schema/mule/client/3.2/mule-client.xsd http://www.mulesoft.org/schema/mule/cxf http://www.mulesoft.org/schema/mule/cxf/3.2/mule-cxf.xsd http://www.mulesoft.org/schema/mule/management http://www.mulesoft.org/schema/mule/management/3.2/mule-management.xsd http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/3.2/mule-scripting.xsd http://www.mulesoft.org/schema/mule/sxc http://www.mulesoft.org/schema/mule/sxc/3.2/mule-sxc.xsd http://www.mulesoft.org/schema/mule/xml http://www.mulesoft.org/schema/mule/xml/3.2/mule-xml.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <tcp:connector name="tcpConnector" validateConnections="false"> <tcp:safe-protocol payloadOnly="false" /> </tcp:connector> <model name="tcp-test2"> <service name="server"> <inbound> <tcp:inbound-endpoint address="tcp://localhost:8200/tcpeventprocessor" exchange-pattern="request-response" /> </inbound> <echo-component/> </service> </model> </mule>
• Log Output:

  Hide

  ERROR 2012-06-11 13:21:59,847 [tcpConnector.receiver.02] org.mule.exception.DefaultSystemExceptionStrategy: Caught exception in Exception Strategy:
  ********************************************************************************
  Message : Failed to transform from "byte[]" to "Object"
  Type : org.mule.api.transformer.TransformerException
  Code : MULE_ERROR-65110
  JavaDoc : http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transformer/TransformerException.html
  Transformer : ByteArrayToMuleMessage{this=4a4de3fe, name='null', ignoreBadInput=false, returnClass=SimpleDataType{type=org.mule.api.MuleMessage, mimeType='*/*'}, sourceTypes=[SimpleDataType{type=[B, mimeType='*/*'}, SimpleDataType{type=java.io.InputStream, mimeType='*/*'}]}
  ********************************************************************************
  Exception stack is:
  1. The MuleContext must not be null (java.lang.IllegalArgumentException)
    org.mule.util.SerializationUtils:30 (null)
  2. Failed to transform from "byte[]" to "Object" (org.mule.api.transformer.TransformerException)
    org.mule.transformer.simple.ByteArrayToSerializable:58 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transformer/TransformerException.html)
  ********************************************************************************
  Root Exception stack trace:
  java.lang.IllegalArgumentException: The MuleContext must not be null
  at org.mule.util.SerializationUtils.deserialize(SerializationUtils.java:30)
  at org.mule.transformer.simple.ByteArrayToSerializable.doTransform(ByteArrayToSerializable.java:52)
  at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:423)
  at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:375)
  at org.mule.transformer.wire.TransformerPairWireFormat.read(TransformerPairWireFormat.java:62)
  at org.mule.transport.tcp.protocols.MuleMessageWorker.doRead(MuleMessageWorker.java:71)
  at org.mule.transport.tcp.protocols.MuleMessageSafeProtocol.read(MuleMessageSafeProtocol.java:38)
  at org.mule.transport.tcp.TcpMessageReceiver$TcpWorker.getNextMessage(TcpMessageReceiver.java:364)
  at org.mule.transport.AbstractReceiverResourceWorker.doRun(AbstractReceiverResourceWorker.java:44)
  at org.mule.transport.AbstractReceiverWorker.run(AbstractReceiverWorker.java:63)
  at org.mule.work.WorkerContext.run(WorkerContext.java:310)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
  at java.lang.Thread.run(Thread.java:679)

  Show

  ERROR 2012-06-11 13:21:59,847 [tcpConnector.receiver.02] org.mule.exception.DefaultSystemExceptionStrategy: Caught exception in Exception Strategy: ******************************************************************************** Message : Failed to transform from "byte[]" to "Object" Type : org.mule.api.transformer.TransformerException Code : MULE_ERROR-65110 JavaDoc : http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transformer/TransformerException.html Transformer : ByteArrayToMuleMessage{this=4a4de3fe, name='null', ignoreBadInput=false, returnClass=SimpleDataType{type=org.mule.api.MuleMessage, mimeType='*/*'}, sourceTypes=[SimpleDataType{type=[B, mimeType='*/*'}, SimpleDataType{type=java.io.InputStream, mimeType='*/*'}]} ******************************************************************************** Exception stack is: 1. The MuleContext must not be null (java.lang.IllegalArgumentException)   org.mule.util.SerializationUtils:30 (null) 2. Failed to transform from "byte[]" to "Object" (org.mule.api.transformer.TransformerException)   org.mule.transformer.simple.ByteArrayToSerializable:58 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transformer/TransformerException.html) ******************************************************************************** Root Exception stack trace: java.lang.IllegalArgumentException: The MuleContext must not be null at org.mule.util.SerializationUtils.deserialize(SerializationUtils.java:30) at org.mule.transformer.simple.ByteArrayToSerializable.doTransform(ByteArrayToSerializable.java:52) at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:423) at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:375) at org.mule.transformer.wire.TransformerPairWireFormat.read(TransformerPairWireFormat.java:62) at org.mule.transport.tcp.protocols.MuleMessageWorker.doRead(MuleMessageWorker.java:71) at org.mule.transport.tcp.protocols.MuleMessageSafeProtocol.read(MuleMessageSafeProtocol.java:38) at org.mule.transport.tcp.TcpMessageReceiver$TcpWorker.getNextMessage(TcpMessageReceiver.java:364) at org.mule.transport.AbstractReceiverResourceWorker.doRun(AbstractReceiverResourceWorker.java:44) at org.mule.transport.AbstractReceiverWorker.run(AbstractReceiverWorker.java:63) at org.mule.work.WorkerContext.run(WorkerContext.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:679)
• Similar Issues:

  None

Scenario: Mule application with outbound TCP endpoint (client) and Mule application with inbound TCP endpoint (server). The TCP connector is configured as follows at both ends.

<tcp:connector name="tcpConnector" validateConnections="false">
<tcp:safe-protocol payloadOnly="false" />
</tcp:connector>

Note that payloadOnly="false". When a message is received by the TCP inbound endpoint, Mule throws an exception stating that the Mule Context must not be null. When payloadOnly is set to false, the receiving program expects an entire Mule Message. In the class TransformerPairWireFormat, Mule creates a Transformer called inboundTransformer which is called to effect this transformation. It seems as though this transformer is not being initialised properly. In fact when the execution of the stack trace passes through this class, the Mule Context of the inboundTransformer is already null. This causes the exception further down the stack trace.