**Drogon** is a C++11-based HTTP application framework. Drogon can be used to easily build various types of web application server programs using C++. Drogon's main application platform is Linux. For debugging purposes, it also supports Mac OS. There is no plan to support Windows. Its main features are as follows:
* The network layer uses a NIO framework based on epoll (poll under MacOS) to provide high-concurrency, high-performance network IO;
* Full asynchronous programming mode;
* Support Http1.0/1.1 (server side and client side);
* Based on template, a simple reflection mechanism is implemented to completely decouple the main program framework, controller and view.
* Support for cookies and built-in sessions;
* Support back-end rendering, the controller generates the data to the view to generate the Html page, the view is described by a "JSP-like" CSP file, the C++ code is embedded into the Html page by the CSP tag, and the drogon command-line tool automatically generates the C++ code file for compilation;
* Support view page dynamic loading (dynamic compilation and loading at runtime);
* Very convenient and flexible path to controller handler mapping scheme;
* Support filter chain to facilitate the execution of unified logic (such as login verification, Http Method constraint verification, etc.) before the controller;
* Support https (based on OpenSSL implementation);
