[prev in list] [next in list] [prev in thread] [next in thread] 

List:       httpclient-users
Subject:    Re: Releasing Connection
From:       Matt Narrell <matt.narrell () gmail ! com>
Date:       2012-02-01 0:20:32
Message-ID: E2B57044-ADAC-4769-8818-A1194C6F3404 () gmail ! com
[Download RAW message or body]

Releasing the connection is managed by the aptly named ConnectionManager.  Consuming \
the entity (ultimately closing the InputStream) indicates that your usage of the \
current connection is complete.  The ConnectionManager will then decide what to do \
with the connection.  Read section 2.2 of [2] where connection persistence is \
discussed.  It's highly likely that your ConnectionManager is keeping this connection \
open for future requests.

If you must have the connection released, take a look at setting a \
ConnectionKeepAliveStrategy on the HttpClient.  Set the KeepAliveDuration to -1, and \
ensure you clean up your entities.

mn

On Jan 31, 2012, at 9:07 AM, Mohit Anchlia wrote:

> On Tue, Jan 31, 2012 at 8:24 AM, Matt Narrell <matt.narrell@gmail.com> wrote:
> > You must consume the HttpEntity in every case, even if there is an exception, or \
> > you will leak connections from your ConnectionManager's pool. 
> > You can consume entities via:
> > 
> > * Calling any of the EntityUtils.* methods.
> 
> But from looking at the code it looks like thatr
> "EntityUtils.toByteArray(entity), " also closes the stream. Does that
> release connection?
> > * Using a org.apache.http.impl.client.BasicResponseHandler (or any \
> > org.apache.http.client.ResponseHandler implementation that consumes the \
> >                 HttpEntity).
> > * Calling abort() on the HttpUriRequest in case of an exception.
> > See [1] for more information.
> > 
> > Do not call releaseConnection explicitly (unless you're implementing a \
> > ConnectionManager or working at low levels).  Doing so may conflict with any \
> > Keep-Alive strategies or connection persistence you might use.  See [2], section \
> > 2.8 for more information. 
> > [1] http://hc.apache.org/httpcomponents-client-ga/tutorial/html/fundamentals.html
> > [2] http://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html
> > 
> > On Jan 30, 2012, at 10:33 AM, Mohit Anchlia wrote:
> > 
> > > HttpClient 4.1.2 - I am using Multithreaded connection manager. Do I
> > > need to explicitly call releaseConnection on this?
> > > 
> > > Also, after every http request I am calling
> > > EntityUtils.toByteArray(entity), would it release connection or is
> > > this the right way to release connection?
> > > 
> > > I am seeing some wierd behaviour and want to undersand this little more.
> > > 
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> > > For additional commands, e-mail: httpclient-users-help@hc.apache.org
> > > 
> > 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> For additional commands, e-mail: httpclient-users-help@hc.apache.org
> 


---------------------------------------------------------------------
To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
For additional commands, e-mail: httpclient-users-help@hc.apache.org


[prev in list] [next in list] [prev in thread] [next in thread]