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https://issues.apache.org/jira/browse/HTTPCORE-758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17768526#comment-17768526
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Karthik Bandi commented on HTTPCORE-758:
----------------------------------------
If you agree that this is a bug, I would like to request you to provide a fix
asap, I know it is a corner case but we do see this issue on some environments
blocking the business.
Otherwise, if you don't see this a bug, can you please help me what's the
trigger for the issue? What can be done to prevent the underlying socket issues?
Thanks in Advance,
Karthik
> Requests stuck in IOReactor queue due to fatal exceptions while creating IO
> dispatchers
> ---------------------------------------------------------------------------------------
>
> Key: HTTPCORE-758
> URL: https://issues.apache.org/jira/browse/HTTPCORE-758
> Project: HttpComponents HttpCore
> Issue Type: Bug
> Components: HttpCore NIO
> Affects Versions: 4.4.13
> Environment: Library & version: Apache httpasyncclient - 4.1.4,
> httpcore: 4.4.13,httpcore-nio: 4.4.10
> Operating System: Windows
> Runtime Environment: Java 1.8
> Reporter: Karthik Bandi
> Priority: Blocker
>
> Hi team,
> Requests are stuck in the requestQueue of IO Reactor
> (DefaultConnectingIOReactor) but not processed due to abnormal termination of
> I/O Reactor thread that processes the requests (started as part of calling
> the start() in CloseableHttpAsyncClientBase).
> I've enabled http logging and collected the following error logs:
> {code:java}
> DEBUG 2023-09-18 10:16:38,706Z [parallel_; tid=11876601] [
> o.a.http.impl.nio.client.MainClientExec] : [exchange: 47975] start execution
> DEBUG 2023-09-18 10:16:38,706Z [parallel_; tid=11876601] [
> o.a.h.client.protocol.RequestAddCookies] : CookieSpec selected: standard
> DEBUG 2023-09-18 10:16:38,706Z [parallel_; tid=11876601] [
> o.a.h.client.protocol.RequestAuthCache] : Auth cache not set in the context
> DEBUG 2023-09-18 10:16:38,706Z [parallel_; tid=11876601]
> [o.a.h.i.n.client.InternalHttpAsyncClient] : [exchange: 47975] Request
> connection for {s}-> xxxxxxxxxxxxxxxxxxxxx
> DEBUG 2023-09-18 10:16:38,706Z [parallel_; tid=11876601]
> [.n.c.PoolingNHttpClientConnectionManager] : Connection request: [route:
> {s}->xxxxxxxxxxxxxxxxxxxxxxxxx][total kept alive: 0; route allocated: 0 of 2;
> total allocated: 0 of 20]
> ERROR 2023-09-18 10:16:38,757Z [ pool-48041-thread-1]
> [o.a.h.i.n.client.InternalHttpAsyncClient] : I/O reactor terminated abnormally
> org.apache.http.nio.reactor.IOReactorException: Failure opening selector
> at
> org.apache.http.impl.nio.reactor.AbstractIOReactor.<init>(AbstractIOReactor.java:103)
> at
> org.apache.http.impl.nio.reactor.BaseIOReactor.<init>(BaseIOReactor.java:85)
> at
> org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:318)
> at
> org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:221)
> at
> org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64)
> at java.lang.Thread.run(Thread.java:750)
> Caused by: java.io.IOException: Unable to establish loopback connection
> at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:94)
> at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:61)
> at java.security.AccessController.doPrivileged(Native Method)
> at sun.nio.ch.PipeImpl.<init>(PipeImpl.java:171)
> at sun.nio.ch.SelectorProviderImpl.openPipe(SelectorProviderImpl.java:50)
> at java.nio.channels.Pipe.open(Pipe.java:155)
> at sun.nio.ch.WindowsSelectorImpl.<init>(WindowsSelectorImpl.java:142)
> at
> sun.nio.ch.WindowsSelectorProvider.openSelector(WindowsSelectorProvider.java:44)
> at java.nio.channels.Selector.open(Selector.java:227)
> at
> org.apache.http.impl.nio.reactor.AbstractIOReactor.<init>(AbstractIOReactor.java:101)
> ... 5 common frames omitted
> Caused by: java.net.SocketException: Socket operation on nonsocket: bind
> at sun.nio.ch.Net.bind0(Native Method)
> at sun.nio.ch.Net.bind(Net.java:461)
> at sun.nio.ch.Net.bind(Net.java:453)
> at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:222)
> at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:85)
> at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:78)
> at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(PipeImpl.java:121)
> at sun.nio.ch.PipeImpl$Initializer.run(PipeImpl.java:76)
> ... 14 common frames omitted{code}
> I would like to know what is the cause for underlying exception:
> {code:java}
> Caused by: java.net.SocketException: Socket operation on nonsocket: bind{code}
> Is it environment issue that can be fixed with any configuration changes on
> Windows system?
> If it is non-recoverable exception, why would the HttpAsyncClient doesn't
> shutdown the connection manager and all relevant components and respond back
> to the caller by calling the callback methods?
> Finally, Can I expect a fix for apache team on this issue? thanks.
> Same issue is reported in [Apache :: Requests stuck in queue due to
> termination of I/O Reactor
> (apachelounge.com)|https://www.apachelounge.com/viewtopic.php?t=9113]
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