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List: httpclient-users
Subject: Re: IllegalStateException when sending a new request with a HttpClient that allready sent an aborted
From: "Jan Bracker" <jan.bracker () googlemail ! com>
Date: 2008-04-21 20:39:56
Message-ID: dc949a940804211339q4c0256fam26f082160f659207 () mail ! gmail ! com
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Thank you Oleg, it seems to work correctly now :)
Regards, Jan
2008/4/21, Oleg Kalnichevski <olegk@apache.org>:
>
> On Sat, 2008-04-19 at 12:28 +0200, Jan Bracker wrote:
> > Here the attached java source reproduces the error :)
> > I hope you can fix it.
> >
> > Regards,
> > Jan Bracker
> >
>
>
> Hi Jan,
>
> It turned out to be quite a nasty problem.
>
> https://issues.apache.org/jira/browse/HTTPCLIENT-763
>
> Fixed in SVN trunk. Please re-test your application against the latest
> SVN snapshot.
>
>
> Oleg
>
>
>
> > 2008/4/19, Oleg Kalnichevski <olegk@apache.org>:
> > >
> > > On Fri, 2008-04-18 at 22:32 +0200, Jan Bracker wrote:
> > > > Well, atleast the error doesn't seem have malicious side effects.
> > > > Everything seems to work alltough the error occures and subsequent
> > > > requests (when the previous one was not aborted) don't give the error
> > > > message anymore.
> > > >
> > >
> > >
> > > Jan,
> > >
> > > I'll try to look into the problem in the coming days. It would really
> > > help, though, if you could put together a test case that reproduces the
> > > problem.
> > >
> > >
> > > Oleg
> > >
> > >
> > >
> > > > 2008/4/18, Sam Berlin <sberlin@gmail.com>:
> > > > > I guess that wasn't the problem then. :(
> > > > >
> > > > >
> > > > > Sam
> > > > >
> > > > > On 4/18/08, Jan Bracker <jan.bracker@googlemail.com> wrote:
> > > > > > I just tryed the linked version. When i try to execute a request with
> > > > > > the HttpClient i previously aborted a request from the same exceptions
> > > > > > occures as warning:
> > > > > >
> > > > > > 47492 [Thread-5] WARN
> > > > > > org.apache.http.impl.conn.SingleClientConnManager - Invalid use of
> > > > > > SingleClientConnManager: connection still allocated.
> > > > > > Make sure to release the connection before allocating another one.
> > > > > > java.lang.IllegalStateException: Revoking connection to
> > > > > > HttpRoute[{}->http://www.dfr-software.de:80]
> > > > > > at org.apache.http.impl.conn.SingleClientConnManager.revokeConnection(SingleClientConnManager.java:339)
> > > > > > at org.apache.http.impl.conn.SingleClientConnManager.getConnection(SingleClientConnManager.java:215)
> > > > > > at org.apache.http.impl.conn.SingleClientConnManager$1.getConnection(SingleClientConnManager.java:186)
> > > > > > at org.apache.http.impl.client.DefaultClientRequestDirector.execute(DefaultClientRequestDirector.java:294)
> > > > > > at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:501)
> > > > > > at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:464)
> > > > > > at org.downman.download.http.HttpDownload$HttpDownloader.requestFileInfo(HttpDownload.java:297)
> > > > > > at org.downman.download.http.HttpDownload$HttpDownloader.initializeDownloader(HttpDownload.java:428)
> > > > > > at org.downman.download.http.HttpDownload$HttpDownloader.run(HttpDownload.java:543)
> > > > > > at java.lang.Thread.run(Thread.java:619)
> > > > > >
> > > > > > It seems the exception still occures...
> > > > > >
> > > > > > 2008/4/18, Sam Berlin <sberlin@gmail.com>:
> > > > > > > Ya, 4.0. There's some snapshots available @ people.apache.org, the
> > > > > > > latest of which appears to be:
> > > > > > > http://people.apache.org/repo/m2-snapshot-repository/org/apache/httpcomp \
> > > > > > > onents/httpclient/4.0-alpha4-SNAPSHOT/httpclient-4.0-alpha4-20080417.184048-7.jar
> > > > > > >
> > > > > > > . I can't guarantee they'll work (as the API is in flux), but if your
> > > > > > > code can compile against it and run, and the error goes away, atleast
> > > > > > > we can verify that the bug is indeed fixed for the next alpha release.
> > > > > > >
> > > > > > >
> > > > > > > Sam
> > > > > > >
> > > > > > > On 4/18/08, Jan Bracker <jan.bracker@googlemail.com> wrote:
> > > > > > > > Sorry, i don't have any experience with building maven projects...
> > > > > > > >
> > > > > > > > I forget to say that i'm working with 4.0, not that we missunderstand \
> > > > > > > > :)
> > > > > > > > 2008/4/18, Sam Berlin <sberlin@gmail.com>:
> > > > > > > > > This is likely due to a problem with the last alpha release of
> > > > > > > > > HttpClient. Aborted connections weren't properly released back to
> > > > > > > > > connection managers. It's been fixed, but I'm not sure a new \
> > > > > > > > > release was issued.
> > > > > > > > >
> > > > > > > > > Is it possible to try building httpclient from source and see if \
> > > > > > > > > the problem still occurs?
> > > > > > > > >
> > > > > > > > > Sam
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > On 4/18/08, Jan Bracker <jan.bracker@googlemail.com> wrote:
> > > > > > > > > > Hello,
> > > > > > > > > >
> > > > > > > > > > when i abort a request and after that, start a new one with my
> > > > > > > > > > DefaultHttpClient i get the following exception:
> > > > > > > > > > 29207 [Thread-3] WARN
> > > > > > > > > > org.apache.http.impl.conn.SingleClientConnManager - Invalid use \
> > > > > > > > > > of
> > > > > > > > > > SingleClientConnManager: connection still allocated.
> > > > > > > > > > Make sure to release the connection before allocating another \
> > > > > > > > > > one.
> > > > > > > > > > java.lang.IllegalStateException: Revoking connection to
> > > > > > > > > > HttpRoute[{}->http://selfhtml.mijabo.de:80]
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.conn.SingleClientConnManager.revokeConnection(SingleClientConnManager.java:345)
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.conn.SingleClientConnManager.getConnection(SingleClientConnManager.java:220)
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.conn.SingleClientConnManager.getConnection(SingleClientConnManager.java:195)
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.client.DefaultClientRequestDirector.allocateConnection(DefaultClientRequestDirector.java:508)
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.client.DefaultClientRequestDirector.execute(DefaultClientRequestDirector.java:293)
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:500)
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:463)
> > > > > > > > > > at \
> > > > > > > > > > org.downman.download.http.HttpDownload$HttpDownloader.requestFileInfo(HttpDownload.java:294)
> > > > > > > > > > at \
> > > > > > > > > > org.downman.download.http.HttpDownload$HttpDownloader.initializeDownloader(HttpDownload.java:423)
> > > > > > > > > > at \
> > > > > > > > > > org.downman.download.http.HttpDownload$HttpDownloader.run(HttpDownload.java:536)
> > > > > > > > > > at java.lang.Thread.run(Thread.java:619)
> > > > > > > > > >
> > > > > > > > > > Allthough it is only a warning I followed the given adivce and \
> > > > > > > > > > tried the following after i abort a request:
> > > > > > > > > > this.REQUEST.abort();
> > > > > > > > > > try {
> > > > > > > > > > this.CLIENT.getConnectionManager().releaseConnection(
> > > > > > > > > > this.CLIENT.getConnectionManager().getConnection(new
> > > > > > > > > > HttpRoute(HttpDownload.this.HOST)));
> > > > > > > > > > }
> > > > > > > > > > catch(InterruptedException e) {
> > > > > > > > > > LOG.warn("Releasing the connection failed for download: "
> > > > > > > > > > + HttpDownload.this.getSource().toString(), e);
> > > > > > > > > > }
> > > > > > > > > >
> > > > > > > > > > After that the warning did not appear anymore after starting a \
> > > > > > > > > > new request, but for some reason this exception appeared as \
> > > > > > > > > > warning when aborting/trying to release the connection:
> > > > > > > > > > 40827 [Thread-3] WARN
> > > > > > > > > > org.apache.http.impl.conn.SingleClientConnManager - Invalid use \
> > > > > > > > > > of
> > > > > > > > > > SingleClientConnManager: connection still allocated.
> > > > > > > > > > Make sure to release the connection before allocating another \
> > > > > > > > > > one.
> > > > > > > > > > java.lang.IllegalStateException: Revoking connection to
> > > > > > > > > > HttpRoute[{}->http://selfhtml.tobias-unger.com:80]
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.conn.SingleClientConnManager.revokeConnection(SingleClientConnManager.java:345)
> > > > > > > > > > at \
> > > > > > > > > > org.apache.http.impl.conn.SingleClientConnManager.getConnection(SingleClientConnManager.java:220)
> > > > > > > > > > at \
> > > > > > > > > > org.downman.download.http.HttpDownload$HttpDownloader.releaseConnection(HttpDownload.java:410)
> > > > > > > > > > at \
> > > > > > > > > > org.downman.download.http.HttpDownload$HttpDownloader.finalizeDownloader(HttpDownload.java:527)
> > > > > > > > > > at \
> > > > > > > > > > org.downman.download.http.HttpDownload$HttpDownloader.run(HttpDownload.java:601)
> > > > > > > > > > at java.lang.Thread.run(Thread.java:619)
> > > > > > > > > >
> > > > > > > > > > It seems to be the same error. I wanted to ask, what am i doing \
> > > > > > > > > > wrong? Is it normal to recieve a warning exception when sending \
> > > > > > > > > > requests after previously aborting one? How can i get rid of this \
> > > > > > > > > > warning?
> > > > > > > > > > As a sidenote: I am reusing one and the same HttpRequest (same
> > > > > > > > > > instance) and HttpClient multiple times.
> > > > > > > > > >
> > > > > > > > > > Regards,
> > > > > > > > > > Jan Bracker
> > > > > > > > > >
> > > > > > > > >
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