macOS Paw - Parse response cookies for request header - cookies

Question

How do I parse a response cookie and sent back a specific value into a request header?
I'm making a request: it's sending back a token in a session cookie (token=longstrong). I need to grab that cookie, parse out token, and send back the value in a x-token: request header for following requests.
Paw is only giving me the option to send the cookie (raw).
How can I parse the response cookie to send back the value of $.token (json pseudo-code)?

Answer 1

A late reply, sorry!
This might help (from How do i pick specific cookies?):
Use a Custom dynamic value (right click on the field, and pick Extensions > Custom), instead, and use the following JavaScript code snippet:
function evaluate(context){
// Set here the cookies you'd like to return
var wantedCookies = ["datr", "reg_fb_ref"];
var regex = /^(\w+)\=([^;\s]+)/g;
// Request
// Uses here the current request, you can use getRequestByName("name of the request") instead
var request = context.getCurrentRequest();
// Get response cookies
var cookies = request.getLastExchange().getResponseHeaderByName("Set-Cookie").split(", ");
var filteredCookies = [];
for (var i in cookies) {
var cookie = cookies[i];
var match = regex.exec(cookie);
if (match && wantedCookies.indexOf(match[1]) >= 0) {
filteredCookies.push(match[0]);
}
}
return filteredCookies.join(",");
};
That basically parses manually the response cookies, and returns the ones you need.
This other question might help: Routes using cookie authentication from previous version of Paw no longer work on new version