Pre-request script to get current timestamp and echotoken value for API call (for Postman)

pre-request.js

//create a current timestamp in javascript
timestamp = new Date();
pm.environment.set(“timestamp”, timestamp);

//function to get a unique identifier to be used as echo token

function guid() {
 function s4() {
 return Math.floor((1 + Math.random()) * 0x10000)
 .toString(16)
 .substring(1);
 }
 return s4() + s4() + ‘-’ + s4() + ‘-’ + s4() + ‘-’ +
 s4() + ‘-’ + s4() + s4() + s4();
}

//setting echotoken value
pm.environment.set(“echotoken”, guid());

//echo tokens and timestamps are used to avoid replay attacks

pm is not defined

@sroziewski how did you run it? This has to be set as postman pre request script (https://learning.postman.com/docs/writing-scripts/pre-request-scripts/)

pm.environment.set is now changed to postman.setEnvironmentVariable