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From Michele Mazzucco <Michele.Mazzu...@ncl.ac.uk>
Subject Re: AbstractHTTPSender not releasing connection
Date Fri, 04 May 2007 14:11:45 GMT
Dims,

please see here
https://issues.apache.org/jira/browse/AXIS2-2593


Michele

On Fri, 2007-05-04 at 09:59 -0400, Davanum Srinivas wrote:
> Michele,
> 
> Here's what is see in the http client code:
> http://svn.apache.org/repos/asf/jakarta/commons/proper/httpclient/trunk/src/java/org/apache/commons/httpclient/MultiThreadedHttpConnectionManager.java
> 
>    /** The default maximum number of connections allowed per host */
>     public static final int DEFAULT_MAX_HOST_CONNECTIONS = 2;   // Per
> RFC 2616 sec 8.1.4
> 
>     /** The default maximum number of connections allowed overall */
>     public static final int DEFAULT_MAX_TOTAL_CONNECTIONS = 20;
> 
> Could the new threads being created because the old ones are still in
> progress? can you bump up the default limits and try?
> 
> -- dims
> 
> On 5/4/07, Michele Mazzucco <Michele.Mazzucco@ncl.ac.uk> wrote:
> > Dims,
> >
> > even if the HttpClient is cached new connections are created every 3/4
> > requests.
> >
> > Michele
> >
> > On Fri, 2007-05-04 at 09:44 -0400, Davanum Srinivas wrote:
> > > Kamaljeet,
> > >
> > > can you try the 2nd option here:
> > > http://wso2.org/library/87
> > >
> > > -- dims
> > >
> > > On 5/4/07, Kang, Kamaljeet K. <Kamal.K.Kang@tellabs.com> wrote:
> > > > Hi,
> > > >
> > > > I turned the HttpClient log on and from the log it looks like new
> > > > connection is created for every request. I am sending request every 1
> > > > sec so connection shouldn't idle out. I think, AbstractHTTPSender is not
> > > > releasing the connection back to the pool so
> > > > 'MultiThreadedHttpConnectionManager cleanup' thread is trashing it after
> > > > 1 use.
> > > >
> > > >
> > > >
> > > > >>>>>>>> Log
> > > >
> > > > 04-May 08:11:22,184 DEBUG httpclient.MultiThreadedHttpConnectionManager
> > > > [PRIMARY_SUBSCRIBER_FAULT_TOPIC] - Unable to get a connection,
> > > > waiting..., hostConfig=HostConfiguration[host=http://localhost:8081]
> > > > **********ProbCause*****PROP_TEST
> > > > 04-May 08:52:15,369 DEBUG httpclient.MultiThreadedHttpConnectionManager
> > > > [MultiThreadedHttpConnectionManager cleanup] - Connection reclaimed by
> > > > garbage collector,
> > > > hostConfig=HostConfiguration[host=http://localhost:8081]
> > > > 04-May 08:52:15,369 DEBUG httpclient.MultiThreadedHttpConnectionManager
> > > > [MultiThreadedHttpConnectionManager cleanup] - enter
> > > > HttpConnectionManager.ConnectionPool.getHostPool(HostConfiguration)
> > > > 04-May 08:52:15,369 DEBUG httpclient.MultiThreadedHttpConnectionManager
> > > > [MultiThreadedHttpConnectionManager cleanup] - enter
> > > > HttpConnectionManager.ConnectionPool.getHostPool(HostConfiguration)
> > > > 04-May 08:52:15,369 DEBUG httpclient.MultiThreadedHttpConnectionManager
> > > > [MultiThreadedHttpConnectionManager cleanup] - Notifying thread waiting
> > > > on host pool, hostConfig=HostConfiguration[host=http://localhost:8081]
> > > > 04-May 08:52:15,369 DEBUG httpclient.MultiThreadedHttpConnectionManager
> > > > [PRIMARY_SUBSCRIBER_FAULT_TOPIC] - enter
> > > > HttpConnectionManager.ConnectionPool.getHostPool(HostConfiguration)
> > > > 04-May 08:52:15,369 DEBUG httpclient.MultiThreadedHttpConnectionManager
> > > > [PRIMARY_SUBSCRIBER_FAULT_TOPIC] - Allocating new connection,
> > > > hostConfig=HostConfiguration[host=http://localhost:8081]
> > > > 04-May 08:52:15,369 DEBUG httpclient.HttpMethodDirector
> > > > [PRIMARY_SUBSCRIBER_FAULT_TOPIC] - Attempt number 1 to process request
> > > >
> > > >
> > > >
> > > > Thanks
> > > >
> > > > Kamal
> > > >
> > > > -----Original Message-----
> > > > From: Michele Mazzucco [mailto:Michele.Mazzucco@ncl.ac.uk]
> > > > Sent: Friday, May 04, 2007 4:22 AM
> > > > To: axis-user@ws.apache.org
> > > > Subject: Re: AbstractHTTPSender not releasing connection
> > > >
> > > > Hi Kamal,
> > > >
> > > > HttpClient by default uses persistent (keep alive) connections, however
> > > > every few requests a new connection is created.
> > > >
> > > > Michele
> > > >
> > > > On Thu, 2007-05-03 at 16:15 -0400, Kang, Kamaljeet K. wrote:
> > > > > Hi,
> > > > >
> > > > > As per HTTPClient documentation if you are using
> > > > > MultiThreadedhttpConnectionManager then for every
> > > > > HttpClient.executeMethod there has to be corresponding
> > > > > 'releaseConnection' call. I do not see AbstractHttpSender releasing
> > > > > connection anywhere in the code. Is this the reason why even after
> > > > using
> > > > > REUSE_HTTP_CLIENT, we see new HTTP connection created for every
> > > > > request/response?
> > > > >
> > > > >
> > > > >
> > > > > Thanks
> > > > >
> > > > > Kamal
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> 


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