I am using jmeter to perform a performance test on my ASP.Net web form based application. Using a regular expression extractor I am extracting value which has / and = characters on it.
When sending that extracted value with the next request it encodes and replace / and = . This makes my script fails.
Even though I un-tick "Encode" checkbox it keeps happening.
Any solution for this?
Thanks
Related
This is in addition to the question already asked:
Please refer the image displayed on clicking the link : https://i.stack.imgur.com/O0lSD.png
Questions:
Is it possible to extract the highlighted values - Blazor ID and Timestamp in JMeter even when the response fails? (Since these values are unique, dynamic and change for each session - it fails on rerunning them)
Is it possible to create/record > amend > run JMeter scripts when we have such dynamic and unique values involved?
I have tried to capture the Blazor ID through Regular Expressions.
But JMeter is not able to capture it from URL (Tried it with all options in JMeter - URL, Body, Headers, Response etc).
Is this because the request is failing? Please have a look at the SS and let me know if anything has to be corrected from my end.
https://i.stack.imgur.com/jK1SF.png
https://i.stack.imgur.com/B2ZNm.png
I guess the Regex Expression need to be change,
for id use id=([^&]*)
and for time use &_=([^&]*)
We have one URL parameter as "code_challenge" which gets generated at run time, this value we need to extract so that from next runs it can be handled. However since this code value is not captured in any previous requests/responses and need to extract at run time, unable to understand how to achieve.
Tried Regular Extractor choosing URL radio button, but it captures the value from recorded script.
Steps followed:
Record script using Blazmeter (Browse URL xx.com>Click Login)
Redirected to URL(s) in which one of the url has "code_Challenge" parameter with run time value)
First URL is: accounts-xx.com/oauth2/oidcdiscovery/.well-known/openid-configuration> The response doesn't have any parameter values
Second URL is:
https://accounts-xx.com/oauth2/authorize?response_type=code&client_id=zzzz&scope=ituytutut&redirect_uri=xx.com/callBack&code_challenge_method=ooo&**code_challenge=dsfsdlfhl**
In above 3rd point url, Code_challenge value is generated at run time when executed steps from browser.
However If replayed the recorded script which would have already generated code value hence other requests would fail. Due to this, need to get the code value fetched.
The code_challenge is generated from WS02 service.
Jmeter version: 5.3
Please suggest, or should we need to use Selenium webdriver integration.
Regular expression which would extract the value from recorded script:
As per Mitigating Authorization Code Interception Attacks article:
code_challenge The client creates and records a secret cryptographically random string (the code_verifier), which is then encoded using URL safe base64 encoding to transform it into the code_challenge.
As per PKCE in WSO2 IS server article:
1.Plain:
If a code_challenge method is mention as plain or not mention at all it will take this plain value. Then code_challenge will like:
code_challenge = code_verifier
2. SHA256:
To have the code_challenge as SHA256, we should mention this in request otherwise plain value will be assumed.For SHA256 code challenge will be like
code_challenge = BASE64URL-ENCODE(SHA256(ASCII(code_verifier)))
Here base64url is same as base64encoding(used so that all machine can identify as same value) but trailing “=” will be removed and “+” & “/” are placed by “-” & “_” to avoid unnecessary length in URL.(otherwise ‘+’ becomes ‘%2B’, ‘/’ becomes ‘%2F’ and ‘=’ becomes ‘%3D in URL)
As much as possible, it is better to select the code challenge method as SHA256 then the flow will become more secure and hard to guess(if someone try to brute force it)
So I think you need to add JSR223 PreProcessor and calculate/generate the code_challenge using the algorithm used by your server in Groovy language, store the value into a JMeter Variable and use it in the request.
You can leave the field value empty and then its value gets updated once the request is sent. But you won't see the value in the request.
I had a similar issue, it worked in my case.
I'm new to JMeter and I am trying to extract two values using regular expression extractor. The output below is taken out from my browser developer tool in the Params tab. Any help would be appreciated thanks.
execution: e1s1
lt: LT-834935-bEjV0TiHLqi0T6kQddxklS7GoKgOhO
First of all understand how Correlation in JMeter works..
It is the process of capturing and storing the dynamic response from the server and passing it on to subsequent requests. A response is considered dynamic when it can return different data for each iterating request, occasionally affecting successive requests.
The parameters what you have seen are dynamic , you have to identify from which request's response these values are coming.
Use regular expression extractors to extract dynamic values and pass it on to the subsequent requests.
References :
Jmeter Extraction using Regular Expressions
I am recording Login in Jmeter. Password has '#'. Jmeter recorded exact string but when i run the same, '#' is converted to '%40ss' and login is getting failed(login is failing even if i pass parameters through csv file). But if we pass parameters through jmeter Body Data, Login is successful. I dont want to pass through Body Data, i want to send parameters through CSV file. How to achieve this. Please find the attachments
Recorded and Response
My expectation is that it is only a matter of representation, i.e. when I run similar request using a sniffer tool like Wireshark I can see # sign as a part of form data.
Most probably your problem lies somewhere else, i.e. you haven't correlated this __RequestVerificationToken or haven't added HTTP Cookie Manager.
When it comes to load testing ASP.NET web applications you cannot just record and replay your test, you need to perform correlation of dynamic parameters, check out ASP.NET Login Testing with JMeter article for more details.
Lakshmikanth, when you are passing any special character in parameters values then JMeter converts that character into percent-encoding for eg. '#' converts to '%40', '!' converts to '%21'.
To overcome this issue you can pass your password as it is [say P#ssword] in the .csv file but in your request you need to uncheck the encode checkbox corresponding to your password parameter.
I am using Jmeter for my performance testing and I am stuck at the point where I need to extract the value from the URL and pass it to Jmeter.
Here is the example:
Application requires user to create an order and then submit it on the next page
I am at a point where I can create an order using Jmeter.
In order to create a script to submit an order I have copied the url from the web page as passed it as a GET method '/order/submit/23'. This '23' number changes everytime I create a new order
The issue I am having here is when I run my jmeter script it creates another order with another number which then mismatch with the '/order/submit/23' url I have passed.
Is there any way to extract this number from the HTML code and pass it to Jmeter?
I looked into the HTML code and this number is a part of URL so not sure how I can extract it. Any suggestions please
I am looking for something like /order/submit/${var}
Thanks
If I understood you correctly, you need to extract some value from response. You can do it with two samplers:
XPath Extractor
RegEx extractor
I think xpath extractor more appropriate in your case