I'm a big fan of Rack, and I've used it to build several lightweight web apps over the past few years. I've been curious for a while if something similar exists for C++. I've spent quite a bit of time searching Google and come up empty-handed. It doesn't help that I find Rack hard to describe. Its tagline is "A Ruby Webserver Interface". Searching for {c++ "webserver interface"}, I've found things that do much more than I want, like wt, and I've found suggestions to use FastCGI directly. I feel like Rack fits squarely between these two options.
I'm not sure if I'm having trouble finding a C++ analogue to Rack because no such thing exists or because I'm just using poor search terms.
Is there a close C++ analogue to Rack? If not, is there a library or small set of libraries that can do most of the lower-level, error-prone stuff for me, but still leave me with the level of control that Rack does?