.dods_cookies block the data access

[maheshguru]

I'm using esgf-pyclient for accessing the data from ESGF. When user try to access the CORDEX data who is not registered to access the CORDEX data, The cookies store in .dods_cookies file. On next request, .dods_cookies block the data access for registered users also. I would like to know about the .dods_cookies file and provide me support.

Thank you.

[cehbrecht]

@maheshguru I can't say for sure but it looks like esgf-pyclient does not maintain the .dods_cookies. When you logon only an X509 proxy certificate will be fetched. The libraries you use to access the data may use and create a cookie (like python-netcdf4). I have tried this with my demo notebook:

https://github.com/cehbrecht/jupyterlab-notebooks/blob/master/esgf-examples/esgf-opendap.ipynb

python-netcdf4 either uses the certificate.pem or the .dods_cookies. Don't know which is preferred, maybe the cookie. If the cookie is invalid it does not work and it won't be updated by esgf-pyclient.

So, probably esgf-pyclient should remove in addition the cookie when calling logoff.