BinaryRPC – Lightweight WebSocket-based RPC framework in modern C++

In plain words

BinaryRPC is an open-source RPC framework built in C++20 that enables low-latency communication over WebSocket using binary messaging instead of JSON or XML. It is designed for developers building real-time applications and includes built-in session management, quality-of-service levels with automatic retries, and a plugin system for extensibility. The framework prioritizes minimal overhead, thread safety, and ease of use through a simple middleware chain.

written from the facts on this page · September 2026

From the sources

BinaryRpc designed for latency-sensitive applications such as multiplayer games, financial tick streams, and IoT dashboards, delivering ultra-low latency and minimal overhead. With a modular architecture and efficient networking, BinaryRPC remains lightweight both in resource usage and developer experience. - efecan0/binaryrpc-framework

In the maker’s words, at launch

Hi HN, I’m a recent CS graduate. During the past few months I wrote BinaryRPC, an open-source RPC framework in modern C++20 focused on low-latency, binary WebSocket messaging. Why I built it * Wanted first-class session support, pluggable QoS levels and a simple middleware chain (global, specific, multi handler)…

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