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From "Jan Bracker" <jan.brac...@googlemail.com>
Subject Re: IllegalStateException when sending a new request with a HttpClient that allready sent an aborted request.
Date Fri, 18 Apr 2008 20:32:41 GMT
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.

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/httpcomponents/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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