WebSocket++ is a header-only C++ library that implements the WebSocket protocol for client and server applications.
The library solves the problem of integrating WebSocket functionality into C++ programs by providing a complete implementation of RFC6455 with support for secure WebSockets, IPv6, and explicit proxies. It uses an interchangeable transport module architecture, allowing developers to choose between raw character buffers, C++ iostreams, or Asio-based networking, with the flexibility to write custom transport policies for other networking libraries. The message and event-based interface abstracts away protocol details while maintaining thread safety across concurrent operations.
Developers should choose WebSocket++ for projects requiring robust WebSocket support in C++ with minimal external dependencies. The library suits applications ranging from real-time communication systems to embedded devices, given its portability across POSIX and Windows platforms and support for 32-bit, 64-bit, Intel, ARM, and PowerPC architectures. It offers flexible dependency management, allowing use of either the C++11 Standard Library or Boost depending on project constraints. The header-only design simplifies integration without requiring separate compilation or installation steps.
The project maintains an active communication infrastructure including a dedicated user manual, announcements mailing list, discussion forum, and IRC channel for community engagement. Pull requests are directed to the develop branch, indicating a structured contribution workflow. The library includes partial support for earlier WebSocket draft specifications alongside full RFC6455 compliance, demonstrating attention to backward compatibility with legacy implementations.
