Maintaining Cross Domain session with passport.js

I am using nodeJs for server and with express and passport as authentication middleware. My front end app is running on angular on localhost:9000 and node app on localhost:3000 . I found that the passport is not able to save session in cross domain . on every page request on my client app , passport create a new session for me instead of maintaining a single session . Also after login on login page it create a session in mongo with user detail available in it , but on second request it never resolve the same session cookie for me .

Start by reproducing the reported setup with the Angular app on localhost:9000 and the Node/Express app on localhost:3000, then inspect how the session cookie is handled after login and on the second request. Done means the existing Mongo-backed session is resolved consistently instead of a new session being created for each request.

Written by the indexing model from the issue text.