YASIO
A multi-platform support c++11 library with focus on asio
...It is used in game and multimedia projects and provides integrations or demos for Unity, Unreal Engine, xlua, axmol, and related development stacks. yasio can be used for TCP, UDP, SSL, IPv6, KCP, and multi-threaded networking scenarios. It is useful for developers who need a portable socket layer that works consistently across games, apps, tools, and custom client software.