Is it possible to use a port in flask when reditect?

Question

ubuntu

I launched the site in ubuntu server 14.04
using apache 80
nginx port 8080
I launched the site in nginx and when redirecting "/" it refers to port 80, otherwise it works on port 8080.
flask code example

@app.route('/logout')
def logout():
    # удалить из сессии имя пользователя, если оно там есть
    session.pop('email', None)
    return redirect('/')

Answer 1

return redirect('/:8080')
And so it works?