The Rack style API is nice for the simplicity. I <3 it. The Rack style api is NOT a great representation of the HTTP protocol. Specifically anything with a str

The Rack style API is nice for the simplicity. I <3 it. The Rack style api is NOT a great representation of the HTTP protocol. Specifically anything with a streaming or chunked response. start_response/yield may not be the absolute best API for this, I haven't thought to much about that. But if you go look into what was done in Rails 3.1 for chunked responses you may realize it's not actually too great.