🔬 Project Overview / 项目概览

Secure and scalable communication is critical in modern IoT ecosystems. SmartHome_Server is a specialized tool designed to verify, benchmark, and simulate secure MQTT environments.
在现代物联网（IoT）生态系统中，安全且可扩展的通信至关重要。SmartHome_Server 是一个专用于验证、基准测试和仿真安全 MQTT 环境的专业工具。

Originally developed for academic research at CTU, it focuses on solving a key problem: How to test IoT middleware scalability without purchasing thousands of physical devices?
该项目最初为 CVUT 的学术研究而开发，旨在解决一个核心问题：如何在不购买数千个物理设备的情况下测试 IoT 中间件的扩展性？

🚀 Key Features / 核心特性

1. High-Concurrency Simulation / 高并发仿真

The system uses Python’s asyncio to spawn thousands of virtual “Actors”. Each Actor behaves like a real physical device:
系统利用 Python 的 asyncio 生成数千个虚拟“Actor”。每个 Actor 都像真实的物理设备一样运行：

  • Sensors: Periodically publish data (Temperature, Humidity) with configurable patterns (Drift, Sine Wave).
  • Actuators: Subscribe to command topics and respond to state changes (Switches, Lights).

2. Mutual TLS (mTLS) Benchmarking / 双向 TLS 基准测试

Security often comes at the cost of performance. This tool allows engineers to quantify that cost. It includes a complete PKI (Public Key Infrastructure) script to generate:
安全往往以牺牲性能为代价。此工具允许工程师量化这一成本。它包含一个完整的 PKI（公钥基础设施）脚本，用于生成：

  • Root CA
  • Server Certificates
  • Client Certificates for thousands of simulated devices

3. Home Assistant Integration / Home Assistant 集成

The simulator implements the Home Assistant MQTT Discovery protocol.
该仿真器实现了 Home Assistant MQTT Discovery 协议。

Use Case:

  1. Launch the simulator with --ha-discovery.
  2. Open your Home Assistant dashboard.
  3. Instantly see 1,000+ new devices appear, allowing you to test HA’s rendering performance and rule engine load.

📊 Benchmarking Methodology / 基准测试方法

The system measures performance metrics with high precision:
该系统能够高精度地测量性能指标：

  • Handshake Latency: Time taken to complete the TLS handshake.
  • Message RTT: Round-trip time from Publisher -> Broker -> Subscriber.
  • CPU/RAM Overhead: Resource consumption of the broker (e.g., EMQX vs Mosquitto) under load.

Example Command

# Simulate 500 sensors aiming at a local broker
python3 sensor_simulator.py \
  --count 500 \
  --broker 192.168.1.100 \
  --use-tls \
  --cert-dir ./certs

📥 Get Started / 开始使用

Whether for academic research or industrial load testing, SmartHome_Server provides the necessary tooling to validate your IoT infrastructure.
无论是用于学术研究还是工业负载测试，SmartHome_Server 都提供了验证 IoT 基础设施所需的工具。

👉 GitHub Repo: SmartHome_Server