I'm doing an HTTP forward in a Camel Processor and getting a Stream closed
error as shown in the stack trace below. This used to work when using Camel
2.13.2, but it is no longer working now we're running Camel 2.17.1. I've
also tried 2.17.6 and 2.18.3 with the same result. The stack trace below is
when using 2.18.3.
The application runs on Tomcat 8.0.30, JDK 8.
Route configuration:
from("servlet:///?matchOnUriPrefix=true")
.to("restInboundRequestTransformer") // This is the Processor that
is performing the forward.
...
Forwarding:
httpReq.getRequestDispatcher(requestURI).forward(httpReq, httpRsp);
ex.setProperty(Exchange.ROUTE_STOP, Boolean.TRUE);
https://issues.apache.org/jira/browse/CAMEL-10425 is very similar, but
indicates it is fixed in Camel 2.18.1.
This seems like a bug in Camel, but I'd appreciate any advice on whether
there is a better way for forwarding an HTTP request than what I'm doing.
org.apache.camel.RuntimeCamelException: java.io.IOException: Stream closed
at
org.apache.camel.http.common.HttpMessage.createBody(HttpMessage.java:74)
at org.apache.camel.impl.MessageSupport.getBody(MessageSupport.java:47)
at
org.apache.camel.http.common.DefaultHttpBinding.readBody(DefaultHttpBinding.java:184)
at
org.apache.camel.http.common.DefaultHttpBinding.readRequest(DefaultHttpBinding.java:107)
at org.apache.camel.http.common.HttpMessage.<init>(HttpMessage.java:52)
at
org.apache.camel.http.common.CamelServlet.doService(CamelServlet.java:169)
at
org.apache.camel.http.common.CamelServlet.service(CamelServlet.java:74)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:719)
at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:465)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:390)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:317)
at
com.mycompany.camel.processor.RestInboundRequestTransformer.process(RestInboundRequestTransformer.java:98)
at
org.apache.camel.impl.ProcessorEndpoint.onExchange(ProcessorEndpoint.java:103)
at
org.apache.camel.impl.ProcessorEndpoint$1.process(ProcessorEndpoint.java:71)
at
org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
at
org.apache.camel.processor.SendProcessor.process(SendProcessor.java:145)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:542)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:197)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:120)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:83)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:197)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:97)
at
org.apache.camel.http.common.CamelServlet.doService(CamelServlet.java:195)
at
org.apache.camel.http.common.CamelServlet.service(CamelServlet.java:74)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at
org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:106)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1096)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:674)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: Stream closed
at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:372)
at
org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:156)
at org.apache.camel.util.IOHelper.copy(IOHelper.java:196)
at org.apache.camel.util.IOHelper.copy(IOHelper.java:169)
at org.apache.camel.util.IOHelper.copyAndCloseInput(IOHelper.java:218)
at org.apache.camel.util.IOHelper.copyAndCloseInput(IOHelper.java:214)
at
org.apache.camel.http.common.HttpHelper.readResponseBodyFromInputStream(HttpHelper.java:244)
at
org.apache.camel.http.common.HttpHelper.readRequestBodyFromServletRequest(HttpHelper.java:195)
at
org.apache.camel.http.common.DefaultHttpBinding.parseBody(DefaultHttpBinding.java:572)
at
org.apache.camel.http.common.HttpMessage.createBody(HttpMessage.java:72)
... 52 more
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