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https://issues.apache.org/jira/browse/CXF-5762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14240692#comment-14240692
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Prosenjit Roy commented on CXF-5762:
------------------------------------
We are using CXF 2.7.10 and http core nio 4.2.4 and experiencing same issue on
production (Solaris). But we couldn't replicate same in any of our development
environments (windows, solaris, ubuntu).
When a client read time-out happens in production, it causes associated
connection to be blocked due to open IOSession and it keeps trying to send
bytes to server. Therefore we see a loop of "produce content" from the logs.
Upon analyzing logs and digging more it seems that while a time-out occurs due
to response delay from server (i.e. response time exceeds client's receive time
out) BaseIOReactor is not able to close the active IOSession and hence not
allowing to release the connection back to free pool.
We yet to figure out what is the root cause for this abnormal behavior and
therefore any help will be much appreciated.
> Connection leak after SocketTimeoutException using Asynchronous Client HTTP
> Transport
> -------------------------------------------------------------------------------------
>
> Key: CXF-5762
> URL: https://issues.apache.org/jira/browse/CXF-5762
> Project: CXF
> Issue Type: Bug
> Components: Transports
> Affects Versions: 2.7.11
> Environment: SunOS 5.10 Generic_147440-25 sun4v sparc
> SUNW,SPARC-Enterprise-T5120, 64bit
> Reporter: Przemysław Ołtarzewski
>
> We are using CXF with Async HTTP Transport to call web services of another
> system (about 15000 requests per day). Some messages sent each day end in
> SocketTimeoutException. About 15-30 out of them cause connection leak (logs
> provided below).
> {noformat}
> 2014.05.23 08:27:26.801
> org.apache.cxf.services.SubscriberLineManagerPortTypeService.SubscriberLineManagerPortTypePort.SubscriberLineManagerPortType
> INFO [HLAPI-68] AbstractLoggingInterceptor:239 Outbound Message
> ---------------------------
> ID: 277
> Address:
> http://10.250.32.140:8082/HighLevelApiWS-2.4/services/SubscriberLineManager
> Encoding: UTF-8
> Http-Method: POST
> Content-Type: text/xml
> Headers: {Accept=[*/*], Connection=[Keep-Alive], SOAPAction=["urn:getAll"]}
> Payload: <?xml version="1.0" encoding="UTF-8"?>
> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";>
> <soap:Body>
> <ns2:getAll
> xmlns="http://pojo.web.api.icc.services.osp.in.alcatel.com/xsd";
> xmlns:ns2="http://implementation.web.api.icc.services.osp.in.alcatel.com";
> xmlns:ns3="http://web.api.icc.services.osp.in.alcatel.com/xsd";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
> <ns2:subscriberLineId>
> <ceSepGroupName xsi:nil="true"/>
> <communityId xsi:nil="true"/>
> <platformName xsi:nil="true"/>
> <serviceRetailerName>HEYAH</serviceRetailerName>
> <subscriberLineId>0048888522289</subscriberLineId>
> <subscriberLineIdType>1</subscriberLineIdType>
> <validityDate xsi:nil="true"/>
> </ns2:subscriberLineId>
> <ns2:additionalParameters>
> <chargingCommand xsi:nil="true"/>
> <depth>1</depth>
> <extCorrelationIdentifier>71001465||</extCorrelationIdentifier>
> </ns2:additionalParameters>
> </ns2:getAll>
> </soap:Body>
> </soap:Envelope>
> --------------------------------------
> 2014.05.23 08:27:26.802
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduitFactory$3 DEBUG
> [HLAPI-68] DefaultAsyncRequestDirector:208 [exchange: 277] start execution
> 2014.05.23 08:27:26.803
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduitFactory$3 DEBUG
> [HLAPI-68] DefaultAsyncRequestDirector:625 [exchange: 277] Request connection
> for {}->http://10.250.32.140:8082
> 2014.05.23 08:27:26.804
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduitFactory$2 DEBUG
> [HLAPI-68] PoolingClientAsyncConnectionManager:172 Connection request:
> [route: {}->http://10.250.32.140:8082][total kept alive: 2; route allocated:
> 2 of 1000; total allocated: 2 of 5000]
> 2014.05.23 08:27:26.805
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduitFactory$2 DEBUG
> [HLAPI-68] PoolingClientAsyncConnectionManager$InternalPoolEntryCallback:297
> Connection leased: [id: 72][route: {}->http://10.250.32.140:8082][total kept
> alive: 1; route allocated: 2 of 1000; total allocated: 2 of 5000]
> 2014.05.23 08:27:26.805
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduitFactory$3 DEBUG
> [HLAPI-68] DefaultAsyncRequestDirector:558 [exchange: 277] Connection
> allocated: [id:72][route:{}->http://10.250.32.140:8082][state:null]
> 2014.05.23 08:27:46.838 org.apache.cxf.phase.PhaseInterceptorChain WARN
> [HLAPI-68] LogUtils:452 Interceptor for
> {http://implementation.web.api.icc.services.osp.in.alcatel.com}SubscriberLineM
> anagerPortTypeService#{http://implementation.web.api.icc.services.osp.in.alcatel.com}getAll
> has thrown exception, unwinding now
> org.apache.cxf.interceptor.Fault: Could not send Message.
> at
> org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:64)
> at
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
> at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:570)
> at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:479)
> at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:382)
> at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:335)
> at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:96)
> at
> org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:135)
> at $Proxy88.getAll(Unknown Source)
> at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> pl.infovide.inconfig.bep.backend.hlapi.HlapiCommunicator.send(HlapiCommunicator.java:212)
> at
> pl.infovide.inconfig.bep.backend.hlapi.HlapiBackend.send(HlapiBackend.java:26)
> at
> pl.infovide.inconfig.bep.backend.unified.UnifiedBackendImpl.forwardRequest(UnifiedBackendImpl.java:230)
> at
> pl.infovide.inconfig.bep.backend.unified.UnifiedBackendImpl.access$000(UnifiedBackendImpl.java:34)
> at
> pl.infovide.inconfig.bep.backend.unified.UnifiedBackendImpl$SenderTask.run(UnifiedBackendImpl.java:316)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.net.SocketTimeoutException: SocketTimeoutException invoking
> http://10.250.32.140:8082/HighLevelApiWS-2.4/services/SubscriberLineManager:
> Read Timeout
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.mapException(HTTPConduit.java:1347)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1331)
> at
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduit$AsyncWrappedOutputStream.close(AsyncHTTPConduit.java:383)
> at
> org.apache.cxf.io.CacheAndWriteOutputStream.postClose(CacheAndWriteOutputStream.java:56)
> at
> org.apache.cxf.io.CachedOutputStream.close(CachedOutputStream.java:223)
> at
> org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:56)
> at
> org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:632)
> at
> org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
> ... 19 common frames omitted
> Caused by: java.net.SocketTimeoutException: Read Timeout
> at
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduit$AsyncWrappedOutputStream.getHttpResponse(AsyncHTTPConduit.java:583)
> at
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduit$AsyncWrappedOutputStream.getResponseCode(AsyncHTTPConduit.java:674)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:1543)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponse(HTTPConduit.java:1513)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1318)
> ... 25 common frames omitted
> {noformat}
> The connection allocated (id: 72) is never released to the connection pool.
> The main detail about scenario that causes the connection leak is no further
> activity during the exchange after connection allocation. In particular,
> there is no indication that the request processing has even started - the
> following line is missing from log (copied from correct exchange):
> {noformat}
> 2014.05.23 12:15:32.372
> org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduitFactory$3 DEBUG
> [I/O dispatcher 18] DefaultAsyncRequestDirector:313 [exchange: 5144] Attempt
> 1 to execute request
> {noformat}
> In other cases with the same exception, there are some bytes sent / events
> set on the exchange etc. and the connection is correctly aborted afterwards,
> but in this specific case the connection just leaks silently. Leaked
> connections accumulate in the pool and after some time make it unusable.
> Relevant configuration parameters:
> ReceiveTimeout=20000
> ConnectionTimeout=20000
> use.async.http.conduit=true
> Keep-alive time is 5000 ms.
> The problem is critical since with pool size of 1000 connections per route
> and using a single route, we are forced to restart our service every 1-2
> months and are unable to provide high availability requested by our business
> client.
> A workaround for us would be to use the default, synchronous HTTP Transport,
> however we have noticed that sometimes it attempts to send a request via a
> connection that is already half-closed by the server side. Has this issue
> been diagnosed / fixed?
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