This is a demo project showcasing a high-performance TCP/UDP game server built with Go and cgo. It includes a server, simulator, and stress testing tool for development and evaluation. It also provides a RESTful service that exposes two RPC methods to view the server status and metrics.

git clone --recurse-submodules https://github.com/wanliqun/cgo-game-server.git

This downloads the required submodule ( C++ Random Name Generator ) automatically.

Requirements:

• automake
• clang++

make cgo

This generates a .so dynamic link library used by cgo.

Install Go (v1.21+) and edit the configuration file (config/config.yml) for customization, then run:

go run main.go --help

This displays usage instructions and available commands.

• Start Server (TCP, UDP, RESTful):

go run main.go server

• Start Simulator (client for debugging):

go run main.go simulator

• Stress Testing:

Establish Mass Connections and Measure TPS:

go run main.go loadrunner -w 100 -r 100 -d 1h

-w: Number of concurrent workers (go-routines) -r: Robots (clients) allocated per worker -d: Duration of the test

cgo-game-server starts a RESTful service which provides two RPC methods to view the server status and metrics. eg., You can open the following URL in a web browser to check the server running statistics if you are running as predefined configurations:

• Server status: http://127.0.0.1:8787/status
• RPC metrics: http://127.0.0.1:8787/metrics

The following projects are referenced:

• Handling 1M TCP connections in Go
• Handling 1M websockets connections in Go