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Date: Fri, 14 Aug 2009 14:11:54 +0300
Message-ID: <3b3bfaf80908140411x59b55385s75bbb44e52378f1f@mail.gmail.com>
Subject: Axis2 1.5.1 and the default HttpClient reuse
From: Dobri Kitipov <kdobrik.axis2@googlemail.com>
To: axis-dev@ws.apache.org
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Hi guys,

I read in Axis2 1.5.1 RC anounce that:

"We now share an instance of HTTPClient across each ConfigurationContext
(i.e.
each Axis2 server or ServiceClient) - connection reuse is now automatic.
This
means the REUSE_HTTP_CLIENT flag is no longer necessary or useful, nor is
creating your own MultithreadedHttpConnectionManager."

Since I have done some research and patches in HttpClient reuse area (ref.
https://issues.apache.org/jira/browse/AXIS2-4288) I want to ask for some
more information - like JIRAs involved or mail threads explaining this
change.

I glimpsed at part of the changes in the code related to this and some
questions popped up in my mind:

1) Did we test this for the asynchronous invocation use case? IMHO it is not
that easy to reuse one HttpClient instance in this case. I am pretty sure
there are some JIRAs that discuss this topic.

2) As explained in https://issues.apache.org/jira/browse/AXIS2-4288 we can
have some unwanted behaviour if we cannot associate an explicite HttpState
when we invoke:

httpClient.executeMethod(config, method);

Since this commit is not part of the RC we need to document this.

3) Anyway, depending on 1) we may need to have a property that could be
configured so a separate HttpClient instance is created and used per call -
if needed?

What do you think?
I will appreciate any comments and guide lines.

Thank you,
Dobri

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<br>Hi guys,<br><br>I read in Axis2 1.5.1 RC anounce that:<br><br>&quot;We =
now share an instance of HTTPClient across each ConfigurationContext (i.e.<=
br>each Axis2 server or ServiceClient) - connection reuse is now automatic.=
 This<br>
means the REUSE_HTTP_CLIENT flag is no longer necessary or useful, nor is<b=
r>creating your own MultithreadedHttpConnectionManager.&quot;<br><br>Since =
I have done some research and patches in HttpClient reuse area (ref. <a hre=
f=3D"https://issues.apache.org/jira/browse/AXIS2-4288">https://issues.apach=
e.org/jira/browse/AXIS2-4288</a>) I want to ask for some more information -=
 like JIRAs involved or mail threads explaining this change.<br>
<br>I glimpsed at part of the changes in the code related to this and some =
questions popped up in my mind:<br><br>1) Did we test this for the asynchro=
nous invocation use case? IMHO it is not that easy to reuse one HttpClient =
instance in this case. I am pretty sure there are some JIRAs that discuss t=
his topic.<br>
<br>2) As explained in <a href=3D"https://issues.apache.org/jira/browse/AXI=
S2-4288">https://issues.apache.org/jira/browse/AXIS2-4288</a> we can have s=
ome unwanted behaviour if we cannot associate an explicite HttpState when w=
e invoke:<br>
<br>httpClient.executeMethod(config, method); <br><br>Since this commit is =
not part of the RC we need to document this.<br><br>3) Anyway, depending on=
 1) we may need to have a property that could be configured so a separate H=
ttpClient instance is created and used per call - if needed?<br>
<br>What do you think?<br>I will appreciate any comments and guide lines.<b=
r><br>Thank you,<br>Dobri<br><br>

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