EVS Network Server

For where this feature sits in the USB-camera system, see System Architecture. :::

📋 Introduction

EVS Network Server is a high-performance TCP data-transfer solution designed for real-time transmission and reception of event-camera data streams. It supports multi-threaded processing, ensuring stable and efficient data transmission.

📋 Technical specifications

System requirements

  • Operating system: Ubuntu 22.04 / CentOS / RHEL
  • Build tools: gcc, g++, build-essential
  • Network protocol: TCP/IP
  • Default port: 8888 (configurable)

🔧 Dependencies

  • Required: gcc, g++, pthread, librt (usually shipped with the system)
  • Optional: OpenCV (for real-time visualization; data can still be received without it)

🚀 Quick start

Run the receiver on a PC

# 优化TCP接收端缓冲区（重要）
chmod +x optimize_tcp_buffers_receiver.sh
./optimize_tcp_buffers_receiver.sh

# 运行接收端
./evs_tcp_receiver_mt <PORT>
# 例如：
./evs_tcp_receiver_mt 8888

Build the receiver standalone (x86_64 / PC)

1. Install dependencies

Option 1: auto-install via Makefile

make install_deps

Option 2: manual install

Ubuntu/Debian:

# 安装基础编译工具
sudo apt-get update
sudo apt-get install -y build-essential

# 安装OpenCV（可选，用于可视化）
sudo apt-get install -y libopencv-dev pkg-config

CentOS/RHEL:

# 安装OpenCV（可选）
sudo yum install opencv opencv-devel

2. Build the receiver

# 使用独立Makefile编译
make receiver

# 或者查看帮助
make help

3. Run the receiver

# 优化TCP接收端缓冲区
chmod +x optimize_tcp_buffers_receiver.sh
./optimize_tcp_buffers_receiver.sh

# 使用默认端口8888
./evs_tcp_receiver_mt

# 或指定端口
./evs_tcp_receiver_mt 9999

Program screenshot alt text

4. Clean build files

make clean_receiver

Downloads

Tips

You can download related materials — such as the EVS receiver and time-sync receiver source code — from the link for more detail.

The development materials include the following: TOOL

🚨 Troubleshooting

Common issues

Issue 1: build complains it cannot find OpenCV

OpenCV is an optional dependency and does not affect core functionality.

  • If you need visualization: install OpenCV and rebuild
  • If you don't need visualization: ignore the warning; the program can still receive data normally

Issue 2: the receiver cannot connect

# 检查防火墙设置：根据实际设置的端口检查防火墙设置
sudo ufw allow <PORT>/tcp
# 例如：
sudo ufw allow 8888/tcp

# 或使用firewall-cmd
sudo firewall-cmd --add-port=<PORT>/tcp --permanent