Cookie handling in Google Apps Script - How to send cookies in header?

Question

I\'m trying to write a simple script that fetches text from a webpage and processes that string. But, that website requires me to be logged in. I was successful in logging i

Answer 1

Here you can find cookies specification: http://www.w3.org/Protocols/rfc2109/rfc2109

You have a potential issue in your code: response.getAllHeaders()['Set-Cookie'] can return either a string or a table of string if multiple 'set-cookie' attributes are sent back from the server.

Eric is right, you cannot return the cookie without digesting it.

Second error in your code:

var opt2 = {"header":header};

should be

var opt2 = {"headers":header};

Be aware also that GAS uses Google IPs. It can happen that two consecutive fetch use different IPs. The server your are connecting to may be session-IP dependant.

Are you sure the server only send you back one cookie after an authentification ?

Answer 2

It looks like you are setting the headers correctly in UrlFetchApp.fetch().

I believe that the data in the Set-Cookie header is in a different format than the data that is expected in Cookie header. For example, Set-Cookie contains information about expiration, etc.