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Date: Fri, 21 Aug 2015 00:36:50 +0530
Message-ID: 
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Subject: Re: intermittent org.apache.http.ConnectionClosedException:
From: Shushant Arora <shushantarora09@gmail.com>
To: HttpClient User Discussion <httpclient-users@hc.apache.org>
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A doubt regarding async client - does it sends the request on same
connection before waiting for repose of previous request on same connection
? Or it will reuse the connection only when first request's response has
arrived or request timeouts ?

Since I doubt connection close is not  coming because of server rather
client machine tcp socket connections limit - Same http client with same
pool size to same same server is working fine but giving connection close
exception on another machine.


When I saw the value of sysctl net.ipv4.ip_local_port_range
On machine where exceptions are coming its
net.ipv4.ip_local_port_range = 32768 61000
but on another machibe its net.ipv4.ip_local_port_range = 1024     65500

On Thu, Aug 20, 2015 at 8:40 PM, Oleg Kalnichevski <olegk@apache.org> wrote:

> On Thu, 2015-08-20 at 20:31 +0530, Shushant Arora wrote:
> > but its failing my job .Is there any eviction policy I should be handling
> > or its automatically taken care of evicting the closed connections.
> >
>
> You have not been listening, have you? The server closes the connection
> on its end _prematurely_.
>
> Oleg
>
> > On Thu, Aug 20, 2015 at 8:02 PM, Oleg Kalnichevski <olegk@apache.org>
> wrote:
> >
> > > On Thu, 2015-08-20 at 20:00 +0530, Shushant Arora wrote:
> > > > Unplugging is not possible.
> > > >
> > > > How to capture the exception in code and detect if a connection is
> > > closed -
> > > > don't use it in further requests and create new one in pool (set to
> max
> > > > connnection pool)?
> > > >
> > >
> > > HttpClient manages persistent connections internally and automatically
> > > discards connections that cannot be re-used.
> > >
> > > Oleg
> > >
> > >
> > > > On Thu, Aug 20, 2015 at 7:55 PM, Oleg Kalnichevski <olegk@apache.org
> >
> > > wrote:
> > > >
> > > > > On Thu, 2015-08-20 at 19:55 +0530, Shushant Arora wrote:
> > > > > > how to avoid this exception - how to handle this.
> > > > > >
> > > > >
> > > > > Unplugging your computer from the network will reliably eliminate
> the
> > > > > problem.
> > > > >
> > > > > Oleg
> > > > >
> > > > > > On Thu, Aug 20, 2015 at 7:45 PM, Oleg Kalnichevski <
> olegk@apache.org
> > > >
> > > > > wrote:
> > > > > >
> > > > > > > On Thu, 2015-08-20 at 19:43 +0530, Shushant Arora wrote:
> > > > > > > > Hi
> > > > > > > >
> > > > > > > > I am using HttpAsyncClients and
> > > PoolingNHttpClientConnectionManager .
> > > > > > > > Getting below exception when I increase no of http clients on
> > > > > machine.
> > > > > > > What
> > > > > > > > could be the reason and solution for this.
> > > > > > > >
> > > > > > > >
> > > > > > > > org.apache.http.ConnectionClosedException: Connection closed
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.nio.protocol.HttpAsyncRequestExecutor.endOfInput(HttpAsyncRequestExecutor.java:321)
> > > > > > > >         at
> > > > > > >
> > > > > > > The opposite endpoint closed the connection on its end without
> > > > > correctly
> > > > > > > completing the message.
> > > > > > >
> > > > > > > Oleg
> > > > > > >
> > > > > > >
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:263)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:81)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:39)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:116)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:164)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:339)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:317)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:278)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:106)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:590)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.SessionInputBufferImpl.fill(SessionInputBufferImpl.java:206)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.codecs.AbstractMessageParser.fillBuffer(AbstractMessageParser.java:138)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:243)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:81)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:39)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:116)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:164)
> > > > > > > >         at
> > > > > > > >
> > > > > > >
> > > > >
> > >
> org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:3
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
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