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Date: Thu, 19 Mar 2009 14:13:17 +0200
Message-ID: <3b3bfaf80903190513m7a068fdds5dcd38fdce6858e3@mail.gmail.com>
Subject: Reuse of HTTPClient among different invocations is ok, what about
	different Web Services, hosts?
From: Dobri Kitipov <kdobrik.axis2@googlemail.com>
To: HttpClient User Discussion <httpclient-users@hc.apache.org>
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Hi everybody,
when we reuse HTTPClient underneath each subsequent call to
HttpClient.executeMethod() will go to the connection manager
(MultiThreadedHttpConnectionManager) and ask for an instance of
HttpConnection. I have tested some use cases when a HTTPClient is reused for
invocation of a single WS and I can verify there is socket reuse. So far so
good.

Anyway, my question is: could we expect any problems when reusing HTTPClient
among different threads calling different WSs which are deployed at
different hosts/servers?
As stated at - http://hc.apache.org/httpclient-3.x/threading.html - there is
a test case that demonstrates how HTTPClient can be reused among different
threads which in turn invoke different web services (WSs). My concern is
that HTTPClient has HttpState which I am not sure could be reused/shared
among different WSs invocations (JavaDoc says for HttpState: "A container
for HTTP attributes that may persist from request to request, such as {@link
Cookie cookies} and authentication {@link Credentials credentials}.")? Can
different WS clients share one HttpClient and its HttpState among different
threads and invoking different WSs (e.g. at differnet hosts)?

Thank you in advance,
Dobri

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