Hey,

I am working with ceilometer, and I noticed when I try to access the base URL for the service http://openstack_controller:8777, I get a message Authentication required, but I am unable to find this message in Ceilometer code base, my further guess were

• python- werkzeug

• wsgi

• python-paste

but even their code base have no exception thrown as Authentication required So my question is

1. where can I find this exception ? where is the catch block for HTTP 401 ?
2. I have to handle this from within the ceilometer code base, where can I find the request handler ?