Can Jupyter notebook access browser cookies in login_handler_class in browser opening the notebook?

[nju08e...@gmail.com]

We are using Jupyter Notebook 4.2.1 now, and with login page enabled and guarded with a self-defined NotebookApp.login_handler_class, we know jupyter notebook login security framework is implemented by tornado. and we are wondering if we can have a way for notebook login_handler_class to access the browser cookies in the browser that opens the notebook url like http://ip:port. Our aim is to perform notebook login with some existed cookies in browser.

Does anyone has any experience about this? 

Many thanks in advance.