Camel REST DSL - Premature end of Content-Length delimited message body - apache-camel

Question

I'm using Camel Rest DSL to build endpoints to use as proxies between different networks.
I have created 2 endpoints. Below the code:
First:
restConfiguration().host("localhost").component("undertow").bindingMode(RestBindingMode.off);
rest("/endpoint?{1param}&{2param}")
.get("/")
.route().routeId("Ednpoint1")
.autoStartup(true)
.setProperty("uri", simple("http4://0.0.0.0:8080/endpoint?1param=${header.1param}&2param=${header.2param}"))
.setHeader(Exchange.HTTP_METHOD, constant("GET"))
.removeHeaders("CamelHttp*")
.toD("${header.uri}").endRest().responseMessage().message("${body}");
Second:
restConfiguration().host("localhost").component("undertow").bindingMode(RestBindingMode.off);
rest("/endpoint?{param1}&{param2}")
.get("/")
.route().routeId("Endpoint2")
.autoStartup(true)
.setProperty("uri", simple("http4://endpoint-destionation/service?dhi=${header.param1}&dhf=${header.param2}"))
.setHeader(Exchange.HTTP_METHOD, constant("GET"))
.removeHeaders("*")
.toD("${header.uri}").endRest().responseMessage().message("${body}");
I'm currently getting the following error:
org.apache.http.ConnectionClosedException: Premature end of Content-Length delimited message body (expected: 146541; received: 54482
at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:180)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:137)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:150)
at org.apache.camel.util.IOHelper.copy(IOHelper.java:219)
at org.apache.camel.util.IOHelper.copy(IOHelper.java:174)
at org.apache.camel.util.IOHelper.copy(IOHelper.java:170)
at org.apache.camel.component.http4.HttpProducer.doExtractResponseBodyAsStream(HttpProducer.java:414)
at org.apache.camel.component.http4.HttpProducer.extractResponseBody(HttpProducer.java:397)
at org.apache.camel.component.http4.HttpProducer.populateResponse(HttpProducer.java:242)
at org.apache.camel.component.http4.HttpProducer.process(HttpProducer.java:203)
at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
at org.apache.camel.processor.SendDynamicProcessor$1.doInAsyncProducer(SendDynamicProcessor.java:178)
at org.apache.camel.impl.ProducerCache.doInAsyncProducer(ProducerCache.java:445)
at org.apache.camel.processor.SendDynamicProcessor.process(SendDynamicProcessor.java:160)
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.component.undertow.UndertowConsumer.handleRequest(UndertowConsumer.java:126)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
at java.lang.Thread.run(Thread.java:748)
Is there a way to bypass this problem with camel? Thanks!

Answer 1

Found the issue.
In my case, I use Wildfly 13 to deploy my Camel Routes.
The problem is with the field Send Buffer inside HTTP Listener Undertow component.
Configuration⇒Subsystems⇒Web (Undertow)⇒Server ⇒default-server
Listener⇒HTTP Listener
I change to value to 10000000 (KBytes), and now is working fine.