How to clear tokens in jMeter

Flushing all cookies / tokens in jMeter

When launching a chain of experiments or jobs in jMeter project you might require to flush all the tokens from the previous step. To make it exactly when you need it, I suggest using simple Java script withing JSR223 processors.
Use PreProcessor if you want to remove tokens at the beginning of a job,
or PostProcessor for flushing all tokens in the end of some process.

1. Add JSR223 Pre- or PostProcessor:

2. Set language to what you like (in my case - java);

3. Provide your code into Script field. E.g. let's use CookieManager in java:

import org.apache.jmeter.protocol.http.control.CookieManager;

CookieManager cManager = sampler.getCookieManager();
    int count = cManager.getCookieCount();
    for (int index = 0; index < count; index++) {
        cManager.remove(0);
        }

Here it is. That will remove all the tokens including, for example, JSESSIONID token.