In jmeter cookie manager you can just clear cookies in each iteration or not.
Question
But what I need is that Jmeter should clear cookies after some iteration. Eg. 2 or 3
Why?
I need this beceause I dont want to overload the server with new cookie data each time. I will send 30 k request but I need just 15 k new session.
You can do this using some scripting, i.e:
Add Beanshell PreProcessor as a child of the very first HTTP Request sampler
Put the following code into "Script" area:
if (vars.getIteration() == 2) {
sampler.getCookieManager().clear();
}
Where:
vars - an instance of JMeterVariables, provides access to all JMeter Variables, including current iteration number
sampler - an entity representing the parent Sampler for the Beanshell PreProcessor, in case of HTTP Request samplers - HTTPSamplerProxy
See How to Use BeanShell: JMeter's Favorite Built-in Component article to get started with scripting in JMeter tests.
Related
I am now using Jmeter to prepare a test plan for my web. The rough flow of the script is that I can check my profile after login. I tried to run my recorded script, and found that the cookie is encoded in http format which I don't want it to be.
Therefore, I would like to ask is there anyway so that I can have a not encrypted cookie value?
[I applied a cookie manager in the script.
The value of the cookie now is something like "%22mh8eIAH8rfsZsM3r%22".
The value that I want is something like "mh8eIAH8rfsZsM3r"]
%22 means " which is percent-encoded, if you want to decode it back - take a look at __urldecode() function:
In general you should not be recording any cookies, you need to add a HTTP Cookie Manager and JMeter will automatically extract incoming cookies from Set-Cookie response header and add them to the next request as Cookie header if domain and path match the ones in the cookie, it's not expired, etc
If you need to access the cookie value as a JMeter Variable the easiest way is adding the next line to user.properties file:
CookieManager.save.cookies=true
and upon JMeter restart you will be able to use the cookie value as ${COOKIE_your-cookie-name-here}
More information: HTTP Cookie Manager Advanced Usage - A Guide
I am using a JSR 223 preprocessor to generate cookie from a text file and it works just fine. However, this cookie gets duplicated on every HTTP sampler request i have.
How can i avoid this ?
My testplan structure is :
testplan
-CookieManger
--testFragment
---JSR223 PreProcessor
----Transaction controller
-----HTTP request1
-----HTTP request2
-----HTTP request3
-----HTTP request4
in the first http request the cookie appear just once, however on HTTP request 2,3,4 the cookie is duplicated 2,3,4 times even though i checked the "clear cookie each itteration" in the cookie manager. How can i avoid this ?
Please note i'm a beginner to jmeter
Be aware of JMeter Scoping Rules, given the current placement of the JSR223 PreProcessor it will be executed before every HTTP Request sampler.
The easiest workaround is just moving it to be a child of the HTTP Request 1
Alternatively you can check the presence of cookie and add it only if it's absent, something like:
if (sampler.getCookieManager().getCookies().find { cookie -> cookie.getName().equals('your-cookie-name-here') } != null) {
//the code to add cookie from the text file here
}
More information: Modifying Cookies in JMeter with Groovy
On Jmeter: View Result tree: Request: Raw
Cookie Data:
.ASPXAUTH=EBB383A4DA12F0C106F044F70EC6CD6637252490DA31179407C466B8933D8B32622584F7A9F18A40C9D423078313E6ACB89519497CDDED451AF0C857AF3D6ED1C12296E56CE7D6058D7450E74B845EE39F3404925F679F180493329BDA021698
Regular expression extractor
Main Sampler Only
Request Headers
Regular Expression : Cookie Data:(.*)
Template : $1$
Match No : 1
Still getting Null Value
Also tryed with
Cookie Data:\n(.*)
Please Suggest.
Given the value is stored in the HTTP Cookie Manager, you can access it using below steps:
Add CookieManager.save.cookies=true line to user.properties file
Restart JMeter to pick the property up
Access the cookie value as ${COOKIE_.ASPXAUTH} where required.
See Using the HTTP Cookie Manager in JMeter article for more detailed explanation of the above steps
In Regular Expression Extractor, under Field to check, please select Response Headers radio button.
To save Cookies automatically, In jmeter.properties file, set as following:
CookieManager.save.cookies=true
Restart Jmeter.
You can access the saved cookies with COOKIE prefix.
example (in your case):
${COOKIE_Cookie_Data} # confirm the same in debug sampler result in View Results Tree
I strongly suggest adding Debug Sampler & View Results Tree, which shows the saved cookie values.
Try "Cookie Data:\n(.+)" as your regex.
= Anything In ()
= At least one character in ()
I have created a test plan in JMeter *(Version 2.13). I was able to add a Cookie Manager to the plan and have my cookies preserved between HTTP Requests, which works just fine.
What I'm trying to do now is, if possible, preserve one Cookie from the start (*Called "JSESSIONID") and then have another Cookie (*let's call it "MYID") which can be modified during the test.
My 1st try at this was like the following:
+Thread Group
-HTTP Request Defaults
-HTTP Cookie Manager
+HTTP Request - Goto HomePage
-HTTP Cookie Manager - Set MYID="server_1"
+HTTP Request - Load Login Page
-HTTP Cookie Manager - Set MYID="server_2"
....and so on for about 3 more HTTP Requests....
But, doing it this way only kept the original Cookies which were captured by the initial Cookie Manager which was set right under the Thread Group element.
Apache's site warns that:
"If there is more than one Cookie Manager in the scope of a Sampler, there is currently no way to specify which one is to be used. Also, a cookie stored in one cookie manager is not available to any other manager, so use multiple Cookie Managers with care."
Another test I did, that was similar to the first except I added a User Defined Variables element to the start of the test which had a variable for the MYID Cookie set to one server, and then about 2 or 3 HTTP Requests down I had a second User Defined Variables element, this time setting the variable to another server. But, after reading a bit more on the User Variables, JMeter only reads User Defined Variables ONCE, at the beginning of the test. So the variable I set last would remain as whatever I set it to in the 2nd User Defined Variables section. So that way won't work to change the Cookie value during the test...
I also, read this from ApacheJMeter's site, here Using Variables to Parametrize Tests, which seems closest to what I am trying to achieve. But, from their example it seems as though it's for modifying variables before the test starts, like for example setting a variable from the command line...
Summary:
To sum things up, what I am trying to achieve is to send my HTTP Requests with 2 Cookies:
1. JSESSIONID
2. MYID
Where JSESSIONID will remain the same from the very start, and MYID which I want to change it's value during test *(multiple times if posible).
Let me know if that does not make sense and I will try and explain further.
Any thoughts or suggestions would be greatly appreciated!
Thanks in Advance,
Matt
You can use Beanshell scripting for cookies manipulation as:
Add a Beanshell PreProcessor to your HTTP Request
Put the following code into the PreProcessor's "Script" area:
import org.apache.jmeter.protocol.http.control.Cookie;
import org.apache.jmeter.protocol.http.control.CookieManager;
CookieManager manager = sampler.getCookieManager();
for (int i = 0; i < manager.getCookieCount(); i++) {
Cookie cookie = manager.get(i);
if (cookie.getName().equals("MYID")) {
cookie.setValue(vars.get("foo"));
manager.remove(i);
manager.add(cookie);
break;
}
}
Above code will substitute "MYID" cookie value with "foo" JMeter Variable value via direct calls to CookieManager class (see API documentation for all possible methods and fields)
Check out How to use BeanShell: JMeter's favorite built-in component guide for advanced information on Beanshell scripting in Apache JMeter.
I know how to modify cookies using BeanShell PreProcessor from:
How to modify / add to Cookie in JMeter?
Thanks to PMD UBIK-INGENIERIE for the answer!
Now, my question is: how do I modify the cookie value between pages? Let me explain, I've a cookie called 'Answers' that for the first page is empty, i.e., Answers="" (empty), then in second page takes the value Answers="-,-,-,-,-,-"; finally in a third page it takes a longer value Answers="-,A,B,-,C,- ..."
How do I modify the same cookie in different pages? I have seen the CookieManager API: http://jmeter.apache.org/api/org/apache/jmeter/protocol/http/control/CookieManager.html
But can anyone please explain with an example? Thank you!
As there cannot be 2 cookies having the same name, the CookieManager is smart enough to replace existing cookie with a new value (see removeMatchingCookies(c); // Can't have two matching cookies line)
So
Request 1: nothing required as you cannot send a cookie having empty value
Requests 2 and 3: Add a Beanshell PreProcessor with the same code like:
import org.apache.jmeter.protocol.http.control.Cookie;
import org.apache.jmeter.protocol.http.control.CookieManager;
CookieManager manager = ctx.getCurrentSampler().getProperty("HTTPSampler.cookie_manager").getObjectValue();
Cookie cookie = new Cookie("Answers", "**VALUE**", sampler.getDomain(), sampler.getPath(), false, System.currentTimeMillis());
manager.add(cookie);
sampler.setCookieManager(manager);
Where **Value** for Request 2 will be -,-,-,-,-,- and for Request 3 will be -,A,B,-,C,- ...
For more information on Beanshell scripting and kind of Beanshell cookbook refer to How to use BeanShell: JMeter's favorite built-in component guide.