creating a twitter project

Question

I am trying to create an mvc project that is going to read tweets using the streaming api. I am facing a challenge when i an trying to get an appId and appSecret. I am getting this error "Error
The client application failed validation: Not a valid URL format
The client application failed validation: Not a valid URL format" when i am specifying my localhost address as my website and calkback url. Please help.

Thank you.