Trantor is a non-blocking I/O, event-loop based TCP network library
written in modern C++ (C++14/17), by the author of the Drogon web
framework. It provides TcpServer/TcpClient, timers,
EventLoop/EventLoopThreadPool, DNS resolution (via c-ares when
present), and optional TLS via OpenSSL or Botan.

License: BSD-3-Clause