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From Oleg Kalnichevski <ol...@apache.org>
Subject Re: Intermittent ConnectionClosedException with httpasynclient.
Date Sun, 27 Oct 2013 10:04:40 GMT
On Thu, 2013-10-24 at 23:39 -0700, Jaikit Savla wrote:
> Also one thing which is puzzling me is that most of the time (95%) this exception is
returned in 0 - 1ms. 


This can usually happen when a persistent connection expires while being
leased from the pool. This can happen. The only way way to mitigate this
problem is to pro-actively evict persistent connections from the pool
after a certain period of inactivity. I would also strongly advise
upgrading to the latest SVN snapshot.


> On Thursday, October 24, 2013 11:33 PM, Jaikit Savla <jaikit.savla@yahoo.com> wrote:
> Hello Mates,
> I am using Apache Async Httpclient 4.0 BETA3
> Intermittently I am receiving ConnectionClosedException in my async failed callback.
Looking at the async httpclient code - it returns ConnectionClosedException when data read
is -1. Doc also says that "Signals that the connection has been closed unexpectedly.". Trying
to understand at which end (server or client) connection was closed ? Can this be related
to any tcp setting on client or server side which might be causing this ? 
> Is it possible to detect this and retry request ?
> Appreciate any pointers.
> Thanks
> stack trace:
> org.apache.http.ConnectionClosedException: Connection closed
> at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.endOfInput(HttpAsyncRequestExecutor.java:261)
> at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:186)
> at org.apache.http.impl.nio.DefaultHttpClientIODispatch.onInputReady(DefaultHttpClientIODispatch.java:125)
> at org.apache.http.impl.nio.DefaultHttpClientIODispatch.onInputReady(DefaultHttpClientIODispatch.java:50)
> at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:112)
> at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:160)
> at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:342)
> at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:320)
> at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:280)
> at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:106)

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