Kalm

Provides a unified API for TCP, UDP, and WebSocket via interchangeable adapters, allowing easy protocol switching without rewriting application logic, as highlighted in the pluggable transports feature.

Supports a middleware pipeline for custom processing like authentication and logging, enabling flexible extensibility without bloating core functionality, mentioned in the middleware pipeline section.

Works with any data format and includes built-in support for JSON, MsgPack, and binary, making it versatile for diverse real-time applications, as per the protocol agnostic feature.

Handles connection lifecycle, reconnection, and heartbeat monitoring automatically, simplifying socket management in Node.js, based on the connection management key feature.