I have a web application with its web server (it's written in C++) and I'd like to host it here if possible. It has SSL support but the certificate isn't valid currently, so I'd also like a (preferably free) domain name that I can get a valid certificate for it on. It uses Boost.Beast, a C++ library based on Boost.Asio that supports HTTP/S and WebSockets, and also Jinja2Cpp (HTML Template library based on Python's Jinja2--work in progress, but intended to support all features that Jinja2 already supports as well) and Nlohmann JSON.
On the JavaScript code, read the comments and then sk