...Automatic, sensible support for users connected with multiple clients and/or devices simultaneously. Realtime info on which users are connected over which protocols (v0.10.0+). Flexible model: use it anywhere you'd use WebSockets/Ajax/Socket.IO, etc. Standard Ring security model: auth as you like, HTTPS when available, CSRF support, etc. Fully documented, with examples. Small codebase: ~1.5k lines for the entire client+server implementation.
Gev is a lightweight, fast non-blocking TCP network library
...Support custom protocols to quickly and easily build high-performance servers. High-performance event loop based on epoll and kqueue. Support multi-core and multi-threading. Dynamic expansion of read and write buffers implemented by Ring Buffer. Asynchronous read and write. SO_REUSEPORT port reuse support. Automatically clean up idle connections. Support WebSocket/Protobuf, custom protocols. Support for scheduled tasks and delayed tasks. High-performance web socket server.
Distributed WebSocket Application Server ISO 20922
N2O is an embeddable message protocol loop library for WebSocket, HTTP, MQTT and TCP servers. It provides basic features, such as process management, virtual nodes ring for request processing, sessions, frame encoding, and unified API for external mq and caching services.