Multiple cookie with the same name

[ls0f]

I read the source code of the set_cookie function,tornado don't support multiple cookie with the same name. What is the purpose of it?

[bdarnell]

The cookie protocol doesn't really support multiple cookies with the same name. It kind of almost works if you reuse the name but vary the domain and path attributes, but because of the way the Cookie header works you can't distinguish these cases and so it never really makes sense to do this on purpose. We simply inherit the stdlib's Cookie module's behavior here.