Thomas Papke created CAMEL-12510:
------------------------------------
Summary: Camel servlet component throw "IOException: Stream
closed" during route processing
Key: CAMEL-12510
URL: https://issues.apache.org/jira/browse/CAMEL-12510
Project: Camel
Issue Type: Bug
Components: camel-servlet
Affects Versions: 2.21.0
Reporter: Thomas Papke
If i just build a simple Route like this to proxy a incoming Get request to
external host:
{code:java}
@Override
public void configure() throws Exception {
from(format("servlet://%s?httpMethodRestrict=GET&servletName=%s",
RETRIEVE_PATH, servletName))
.process((exchange) -> {
exchange.getOut().setHeader(Exchange.HTTP_URI,
"https://some.external.system/";);
}).to("https4:something");
}
{code}
The following exception is thrown:
{code:java}
org.apache.camel.RuntimeCamelException: java.io.IOException: Stream closed
at
org.apache.camel.http.common.HttpMessage.createBody(HttpMessage.java:80)
at org.apache.camel.impl.MessageSupport.getBody(MessageSupport.java:54)
at
org.apache.camel.processor.DefaultExchangeFormatter.getBodyTypeAsString(DefaultExchangeFormatter.java:468)
at
org.apache.camel.processor.DefaultExchangeFormatter.format(DefaultExchangeFormatter.java:126)
at
org.apache.camel.processor.CamelLogProcessor.process(CamelLogProcessor.java:88)
at
org.apache.camel.component.log.LogProducer.process(LogProducer.java:40)
at
org.apache.camel.processor.SendProcessor.process(SendProcessor.java:148)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:138)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:101)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:97)
at
org.apache.camel.http.common.CamelServlet.doService(CamelServlet.java:208)
at
org.apache.camel.http.common.CamelServlet.service(CamelServlet.java:78)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:110)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:106)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Stream closed
at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:346)
at
org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:152)
at org.apache.camel.util.IOHelper.copy(IOHelper.java:202)
at org.apache.camel.util.IOHelper.copy(IOHelper.java:174)
at org.apache.camel.util.IOHelper.copyAndCloseInput(IOHelper.java:234)
at org.apache.camel.util.IOHelper.copyAndCloseInput(IOHelper.java:230)
at
org.apache.camel.http.common.HttpHelper.readResponseBodyFromInputStream(HttpHelper.java:245)
at
org.apache.camel.http.common.HttpHelper.readRequestBodyFromServletRequest(HttpHelper.java:196)
at
org.apache.camel.http.common.DefaultHttpBinding.parseBody(DefaultHttpBinding.java:577)
at
org.apache.camel.http.common.HttpMessage.createBody(HttpMessage.java:78)
... 60 more
{code}
*Workaround / Additional notice:*
* If I rewrite my example route to work without a processor,
{{.setHeader(Exchange.HTTP_URI, constant("https://some.external.system/";))}}
everything works, so it seems to be an issue with the processor handling.
Nevertheless, processor logic should also work.
* even if i use a simple
{{to("log:com.mycompany.order?showAll=true&multiline=true")}} the issue occurs
as well. So it has nothing to with the camel-http4 producer.
* Adding "mapHttpMessageBody=false" to the servlet definition seems to be a
proper workaround for my example, since I only proxy GET requests which never
have a body in the request.
* I already debug into the camel code, but i am not 100% sure if this is the
correct place to fix:
{{org.apache.camel.http.common.DefaultHttpBinding.parseBody(HttpMessage)}} -
here it might make sense to skip body parsing for certain HTTP methods (e.g.
GET)
*Additional notice:*
I found two quiet similar issues on the mailing list:
[http://camel.465427.n5.nabble.com/Stream-closed-exception-when-using-camel-as-http-proxy-with-tomcat-servlet-tt5809653.html#none]
[http://camel.465427.n5.nabble.com/IOException-Stream-closed-when-forwarding-HTTP-request-td5796802.html]
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