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From Philippe Mouawad <philippe.moua...@gmail.com>
Subject Re: JMeter send double requests when configure proxy with authentication
Date Sat, 01 Sep 2018 14:02:30 GMT
Hello,
Thanks for latest updates of PR.
1/ I would not use Object but AuthState instead.

2/ Shouldn't we use HTTPCLIENTS_CACHE_PER_THREAD_AND_HTTPCLIENTKEY and
store AuthState there (transforming Pair to Triple)?

This would be the case for a Thread representing a Virtual User.
But it would not be correct if a thread is not a Virtual User


Regards

On Wed, Aug 29, 2018 at 11:14 AM Artem Fedorov <artem.fedorov@blazemeter.com>
wrote:

> Fixed.
>
> Regarding (HttpClientContext.PROXY_AUTH_STATE + this) I also have doubts:
>
> - minimal number of authstate, that we should store = Number of Requests in
> Test Plan. (each request can use own proxy). Does the AuthState is Thread
> Safe and we can share it between threads? I think no and it'll better to
> store Number of Requests in Plan * Number of Threads AuthStates.
>
> - Also in case if we use dynamic proxy we can not reuse saved AuthState:
>
> >  if (!isDynamicProxy(getProxyHost(), getProxyPortInt())) {
> >    localContext.setAttribute(HttpClientContext.PROXY_AUTH_STATE, proxy);
> >  }
>
> Artem
>
> On Tue, Aug 28, 2018 at 11:46 PM, Philippe Mouawad <
> philippe.mouawad@gmail.com> wrote:
>
> > Thank you Artem,
> >
> > I made a little comment on PR.
> >
> > Just to be sure I understand the PR:
> >
> >    - You set HttpClientContext.PROXY_AUTH_STATE so that it is used if
> >    updated
> >
> > But is it correct to store it as:
> >
> >    - "http.auth.proxy-scope" + this
> >
> > Because we'll end per Thread with :
> >
> >    - Number of Requests in Plan * Number of Threads AuthStates
> >
> > Regards
> >
> >
> > On Mon, Aug 27, 2018 at 3:43 PM Artem Fedorov <
> > artem.fedorov@blazemeter.com>
> > wrote:
> >
> > > Hi Philippe
> > >
> > > https://github.com/apache/jmeter/pull/397
> > >
> > > Let's discuss the details in the PR
> > >
> > > Thanks,
> > > Artem
> > >
> > > On Sun, Aug 26, 2018 at 12:04 AM, Philippe Mouawad <
> > > philippe.mouawad@gmail.com> wrote:
> > >
> > > > Hello Artem,
> > > > Go ahead and propose a patch or PR.
> > > > It will be a clearer base to discuss.
> > > >
> > > > Thank you
> > > >
> > > > On Wed, Aug 22, 2018 at 10:56 AM Artem Fedorov <
> > > > artem.fedorov@blazemeter.com>
> > > > wrote:
> > > >
> > > > > I work with the latest JMeter version from github
> > > > > (revision f27c31590cf07bc8427663b62fc22d6d650b95af)
> > > > >
> > > > > I create a Thread Group with 1 loop and 1 user. This Thread Group
> > > > contains
> > > > > View Results Tree (Listener) and HTTP Resuest (Sampler)
> > > > >
> > > > > Configuration of HTTP Sampler:
> > > > >
> > > > >         <HTTPSamplerProxy guiclass="HttpTestSampleGui"
> > > > > > testclass="HTTPSamplerProxy" testname="HTTP Request"
> > enabled="true">
> > > > > >           <elementProp name="HTTPsampler.Arguments"
> > > > > > elementType="Arguments" guiclass="HTTPArgumentsPanel"
> > > > > testclass="Arguments"
> > > > > > testname="User Defined Variables" enabled="true">
> > > > > >             <collectionProp name="Arguments.arguments"/>
> > > > > >           </elementProp>
> > > > > >           <stringProp name="HTTPSampler.domain"></stringProp>
> > > > > >           <stringProp name="HTTPSampler.port"></stringProp>
> > > > > >           <stringProp name="HTTPSampler.protocol"></stringProp>
> > > > > >           <stringProp
> > > name="HTTPSampler.contentEncoding"></stringProp>
> > > > > >           <stringProp name="HTTPSampler.path">
> http://blazedemo.com
> > > > > > </stringProp>
> > > > > >           <stringProp name="HTTPSampler.method">GET</stringProp>
> > > > > >           <boolProp name="HTTPSampler.follow_
> > > > redirects">true</boolProp>
> > > > > >           <boolProp
> > > name="HTTPSampler.auto_redirects">false</boolProp>
> > > > > >           <boolProp name="HTTPSampler.use_
> > keepalive">true</boolProp>
> > > > > >           <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</
> > > > boolProp>
> > > > > >           <stringProp
> > > name="HTTPSampler.embedded_url_re"></stringProp>
> > > > > >           <stringProp name="HTTPSampler.proxyHost">
> > > > localhost</stringProp>
> > > > > >           <stringProp name="HTTPSampler.proxyPort">
> > 3321</stringProp>
> > > > > >           <stringProp name="HTTPSampler.proxyUser">
> > artem</stringProp>
> > > > > >           <stringProp name="HTTPSampler.proxyPass">
> > artem</stringProp>
> > > > > >           <stringProp
> > > name="HTTPSampler.connect_timeout"></stringProp>
> > > > > >           <stringProp name="HTTPSampler.response_
> > > > timeout"></stringProp>
> > > > > >         </HTTPSamplerProxy>
> > > > >
> > > > >
> > > > > When I run this Test Plan I see 1 sample in the View Results Tree,
> > but
> > > in
> > > > > the access.log of squid I see 2 request from JMeter.
> > > > >
> > > > > 1534844834.248      0 127.0.0.1 TCP_DENIED/407 4056 GET
> > > > > > http://blazedemo.com/ - HIER_NONE/- text/html
> > > > > > 1534844834.320     52 127.0.0.1 TCP_MISS/200 8077 GET
> > > > > > http://blazedemo.com/ artem HIER_DIRECT/54.93.131.97 text/html
> > > > >
> > > > >
> > > > > So, in real test each Sampler will send 2 requests:
> > > > > - 1st without authentication data (and will receive 407 http
> response
> > > > code)
> > > > >  - TCP_DENIED/407
> > > > > - 2nd with authentication data(username/password/type) - will be
a
> > > > success
> > > > > - TCP_MISS/200
> > > > >
> > > > > JMeter (httpclient) send 1st request for detect authentication type
> > > > > (Basic/Digest/NTLM/SPNEGO/Kerberos) which use proxy server.
> > > > > If we will have 2 loops the JMeter will send 4 requests, 3 loops
=
> 6
> > > > > requests etc. I would like to reduce number of request to the proxy
> > > > server
> > > > > and make request for detect authentication type once at the start
> of
> > > the
> > > > > loop
> > > > >
> > > > > Artem
> > > > >
> > > > > On Wed, Aug 22, 2018 at 12:26 AM, Philippe Mouawad <
> > > > > p.mouawad@ubik-ingenierie.com> wrote:
> > > > >
> > > > > > Hello Artem,
> > > > > > I am not sure to understand.
> > > > > >
> > > > > > Can you clarify with an example or reformulating what you mean
by
> > > HTTP
> > > > > > Request that use proxy with authentication.
> > > > > >
> > > > > > and also clarify what’s after that, it’s really not clear
for me.
> > > > > >
> > > > > > Thank you
> > > > > >
> > > > > > On Tuesday, August 21, 2018, Artem Fedorov <
> > > > artem.fedorov@blazemeter.com
> > > > > >
> > > > > > wrote:
> > > > > >
> > > > > > > HI All
> > > > > > >
> > > > > > > I configure HTTP Request that use proxy with authentication
> > > > > > >
> > > > > > > In proxy log I can see, that JMeter *always send 2 requests*:
> (I
> > > > used
> > > > > > > `squid` in tests)
> > > > > > >
> > > > > > > 1534844834.248      0 127.0.0.1 TCP_DENIED/407 4056 GET
> > > > > > > > http://blazedemo.com/ - HIER_NONE/- text/html
> > > > > > > > 1534844834.320     52 127.0.0.1 TCP_MISS/200 8077
GET
> > > > > > > > http://blazedemo.com/ artem HIER_DIRECT/54.93.131.97
> text/html
> > > > > > >
> > > > > > >
> > > > > > > The first request JMeter send without authentication options,
> > > because
> > > > > > this
> > > > > > > options are create after server got a response with 401/407
> code.
> > > > > > >
> > > > > > > In performance test I'll see the following log: (50 % of
all
> > > requests
> > > > > are
> > > > > > > send without authentication options) - IMO this is incorrect
> load
> > > of
> > > > > > proxy
> > > > > > > server or we lose a lot of time for create authentication
> scheme
> > > for
> > > > > each
> > > > > > > request
> > > > > > >
> > > > > > > - TCP_DENIED/407 (without proxy authentication)
> > > > > > > - TCP_MISS/200 (with proxy authentication)
> > > > > > > - TCP_DENIED/407 (without proxy authentication)
> > > > > > > - TCP_MISS/200 (with proxy authentication)
> > > > > > > - TCP_DENIED/407 (without proxy authentication)
> > > > > > > - TCP_MISS/200 (with proxy authentication)
> > > > > > > ....
> > > > > > >
> > > > > > > The first request (the response for this request) use by
> > httpclient
> > > > for
> > > > > > > detect Standard authentication type
> > > > > (Basic/Digest/NTLM/SPNEGO/Kerberos).
> > > > > > I
> > > > > > > think If we have not dynamic proxy we can *reuse* knowledges
> > about
> > > > > > > authentication type in the second and subsequent requests.
> > > > > > > After such changes we will see the following log:
> > > > > > >
> > > > > > > - TCP_DENIED/407 (without proxy authentication)
> > > > > > > - TCP_MISS/200 (with proxy authentication)
> > > > > > > - TCP_MISS/200 (with proxy authentication)
> > > > > > > - TCP_MISS/200 (with proxy authentication)
> > > > > > > ....
> > > > > > >
> > > > > > > What do you think about such changes? If all is OK I can
> > contribute
> > > > the
> > > > > > fix
> > > > > > >
> > > > > > >
> > > > > > > Thanks,
> > > > > > > Artem
> > > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Cordialement.
> > > > > > Philippe Mouawad.
> > > > > > Ubik-Ingénierie
> > > > > >
> > > > > > UBIK LOAD PACK Web Site <http://www.ubikloadpack.com/>
> > > > > >
> > > > > > UBIK LOAD PACK on TWITTER <https://twitter.com/ubikloadpack>
> > > > > >
> > > > >
> > > >
> > > >
> > > > --
> > > > Cordialement.
> > > > Philippe Mouawad.
> > > >
> > >
> >
> >
> > --
> > Cordialement.
> > Philippe Mouawad.
> >
>


-- 
Cordialement.
Philippe Mouawad.

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