> What is it that a normal browser is doing, that JMeter does not?
a normal browser is able to set a specific referer for each request
Have a look at this simple test case:
/page1.html
/compute.jsp
page1.html code:
-----------------------------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Test case</title>
</head>
<body>
<script type="text/javascript" src="compute.jsp"></script>
[LOCAL] The query string used in this html page is:
<script type="text/javascript">
var loc = ""+document.location;
var queryString="";
if(loc.indexOf('?')!=-1)
queryString=loc.substring(loc.indexOf('?'));
document.write(queryString);
</script>
<br>
[SERVER] The query string used in this html page is:
<script type="text/javascript">
document.write(test);
</script>
<p>Both [LOCAL] and [SERVER] query string should be the same</p>
</body>
</html>
-------------------------------------
compute.jsp code:
-------------------------------------
<%
String queryString="";
try
{
queryString =
request.getHeader("Referer").substring(request.getHeader("Referer").indexOf(
"?"));
}
catch(Exception e)
{
//do nothing
}
out.print("var test='"+queryString+"';");
%>
-----------------------------------------
Now let's say that compute.jsp will call some business method that take some
parameters i found in the querystring of the html page which invoked
compute.jsp. If the referer is null or the querystring with the referer
could not be found, an exception is thrown.
At the moment, JMeter is not able to test such framework and there are many
websites which use JSP to factory some javascript and in many cases, the
output of the factory is tied with the referer and with the querystring that
can be found in that referer.
----- Original Message -----
From: "Stover, Michael" <[EMAIL PROTECTED]>
To: "'JMeter Developers List'" <[EMAIL PROTECTED]>
Sent: Friday, March 29, 2002 4:31 PM
Subject: RE: HTTP request and referer
> I guess I don't understand. "Referer" is an HTTP header, no? I don't
know
> what "<script.../>" is, but it looks like you need to parse response pages
> and then generate additional requests based on parsing the <script> tags?
>
> What is it that a normal browser is doing, that JMeter does not?
>
> -Mike
>
> > -----Original Message-----
> > From: Christian Meunier [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, March 29, 2002 10:28 AM
> > To: JMeter Developers List
> > Subject: Re: HTTP request and referer
> >
> >
> > Unfortunatly the HTTP Header Manager is not a valid solution
> > because it
> > does not allow to propagate the querystring that was used in
> > the referer.
> > Consider this example:
> >
> >
> > display_forum.html?num=1
> > -----------------------------------
> > <some html tags>
> > <script src="/get_forum_thread.jsp"></script>
> > ----------------------------------------
> >
> > As you can see, the engine need to know which exact referer
> > (the url AND the
> > querystring) was used to compute the requested information,
> > ( it means that
> > with the referer the engine is able to determine the
> > querystring that was
> > used with the html page)
> >
> > You cant achieve that with an HTTP Header Manager.
> >
> >
> >
> > ----- Original Message -----
> > From: "Stover, Michael" <[EMAIL PROTECTED]>
> > To: "'JMeter Developers List'" <[EMAIL PROTECTED]>
> > Sent: Friday, March 29, 2002 4:11 PM
> > Subject: RE: HTTP request and referer
> >
> >
> > > So, you need to specify custom headers in your JMeter
> > scripts. This can
> > be
> > > done with the Header Manager.
> > >
> > > The proxy server, currently, doesn't transmit/save header
> > information.
> > > However, it could be modified to do so. Is that what you'd
> > like to do?
> > >
> > > -Mike
> > >
> > > > -----Original Message-----
> > > > From: Christian Meunier [mailto:[EMAIL PROTECTED]]
> > > > Sent: Friday, March 29, 2002 10:09 AM
> > > > To: JMeter Developers List
> > > > Subject: Re: HTTP request and referer
> > > >
> > > >
> > > > Thanks for your answer Mike,
> > > >
> > > > You can find a "clear" picture of my framework by
> > > > http://www.magelo.com/overview.html
> > > >
> > > > The engine is using the html referer to determine which
> > > > comunity made the
> > > > call and therefore deliver a custom response for this community.
> > > >
> > > > A simple example:
> > > >
> > > > index.html
> > > > ---------------------------------
> > > > <html>
> > > > <body>
> > > > <script
> > > >
> > src='http://www.magelo.com/components/get_website_info.jsp'></script>
> > > >
> > > > <script>document.write(website_name);</script>
> > > >
> > > > </body>
> > > > </html
> > > > ---------------------------------
> > > >
> > > >
> > > > if the index.html is hosted on http://nightwatchers.dpn.ch
> > > > then when the
> > > > browser call the Javascript ressource, the Magelo engine
> > looks at the
> > > > referer, find http://nightwatchers.dpn.ch/index.html ,
> > since it's a
> > > > registered community, it will deliver the required
> > > > information for this
> > > > community.
> > > >
> > > > Therefore the website_name will be equal to Nightwatchers.
> > > >
> > > > At the moment, the HTTP Request "object" in JMeter is not
> > > > aware of a referer
> > > > attribute, the idea is to add this attribute and when the
> > request is
> > > > made,include the referer in the header.
> > > >
> > > > Then we can modify the Http proxy "recorder" to set the
> > > > referer when it
> > > > "records" HTTP Request
> > > >
> > > > Best regards
> > > > Christian Meunier
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Stover, Michael" <[EMAIL PROTECTED]>
> > > > To: "'JMeter Developers List'" <[EMAIL PROTECTED]>
> > > > Sent: Friday, March 29, 2002 3:37 PM
> > > > Subject: RE: HTTP request and referer
> > > >
> > > >
> > > > > I'm not sure exactly what you mean by "referrer" in this
> > > > sense. Probably
> > > > > JMeter doesn't support it, and I don't know of anyone
> > > > working on it. I'd
> > > > be
> > > > > very interested in understanding more what you mean, and in
> > > > helping you
> > > > find
> > > > > the code that would need to be modified/extended to do it.
> > > > >
> > > > > -Mike
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Christian Meunier [mailto:[EMAIL PROTECTED]]
> > > > > > Sent: Thursday, March 28, 2002 9:34 PM
> > > > > > To: [EMAIL PROTECTED]
> > > > > > Subject: HTTP request and referer
> > > > > >
> > > > > >
> > > > > > Hi, my web application have an heavy usage of referers.
> > > > > > Inside an html page i call some JSP to tailor some javascript
> > > > > > data upon referers using:
> > > > > > <script src='/get_info.jsp'></script>
> > > > > >
> > > > > > I am unable to test my framework with Jmeter because it does
> > > > > > not handle referer to my knowledge.
> > > > > > I would like to know if someone is working on this before i
> > > > > > start to dig in the code.
> > > > > >
> > > > > > I believe it shouldnt be hard to enhance the HttpRequest
> > > > > > class with a referer attribute and let the proxy server set
> > > > > > it (or the user via the gui).
> > > > > >
> > > > > > What do you think of this ?
> > > > > > Thanks in advance.
> > > > > >
> > > > > >
> > > > >
> > > > > --
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