UrlFetchApp - trying to handle 'Cookie' in request

[Mateusz Krajewski]

Hi everyone, 
like in the topic - I am trying to handle 'Cookie' in GET request using UrlFetchApp.fetch() but it doesn't work. 

When I tried to handle that 'Cookie'  in postman or cURL on my mac terminal it worked perfectly. What is more when I tried to make this request using some online online API testing tool, it also failed - the same case: blank response + error 400.

Everytime I try it with GAS I get blank response and without parameter {muteHttpExceptions: true} error 400...

This is how code looks like:

function getHistory() {

var url = 

'https://steamcommunity.com/market/pricehistory/?country=EN&currency=1&appid=730& market_hash_name=Stockholm%202021%20Finalists%20Autograph%20Capsule';

var opt =

{

headers: {

'Cookie':

'steamLoginSecure=76561199310953453%7C%7CACABCC40A4305172D2B1632FA6DD91941B32341F',

},

muteHttpExceptions: true,

credentials : 'include'

};

var request = UrlFetchApp.getRequest(url, opt);

var response = UrlFetchApp.fetch(url, opt);

Logger.log(request['headers']);

Logger.log(response.getAllHeaders());

Logger.log(response.getContentText())

}

These are the Logger.log() results:

This is the 'Cookie' I need to handle in my request

Am I missing something? I am totally stuck with it.
Thanks in advance!

[Clark Lind]

I haven't progressed to that level yet, but you may find something useful in this playlist. He does a lot of Javascript/Apps script videos.

[Clark Lind]

This guy is also one of my favorites... https://www.youtube.com/watch?v=j0PpT96EFeg

[Clark Lind]

Last one... sorry!  https://www.youtube.com/watch?v=34wC1C61lg0

[Mateusz Krajewski]

Thank you so much I really appreciate that! Let's dig in those videos. Hope will find answer there.