Starting Step
- Server
- Camera
- User
node server 127.0.0.1 8080
node server 127.0.0.1 8081
node server 127.0.0.1 8082
node cameraClient.js 8080 camera01
node cameraClient.js 8080 camera02
node cameraClient.js 8081 camera03
node userClient.js client01 camera01 8080
node userClient.js client02 camera01 8080
node userClient.js client02 camera02 8081
node userClient.js client03 camera01 8081