Google calendar api, redirect uri mismatch

i was trying to integrate google calendar api for my ruby application, in google developer console i gave my redirect uri

http://localhost:3000

http://localhost:3000/auth/google_oauth2/callback

400. That’s an error.

Error: redirect_uri_mismatch

redirect_uri=http://localhost:9292/

it keep getting port 9292 even though i mention 3000

i have followed these link ruby quickstart from google