Test task Screen sharing with chat

The task is to make a screen sharing app with a chat functionality.

It is to be a client-server application, where the Host exposes its screen and plays as a chat server, and the Client is a web application that shows what the server exposes and also allows to send/receive short messages.

The exact feature list and UI is up to you to decide, minimal requirements would be:

• multiple simultaneous clients
• still picture of the screen, that is updated periodically
• a single global "chat room" accessible without authentication
• newly connected clients are not required to receive any chat history
• host is to know how many clients are connected

Consider this as a real open source project you'd publish. Think of MVP and invest in quality rather than additional functionality. A product should be seen as something that is a pleasure to use.

Solution

Using technologies:

• Java as base language for server side
• Spark framework and WebSockets for chat
• JSON for structured messages in bidirectional client/server protocol
• JUnit for unit testing and EasyMock for mocking dependent objects
• Maven for assembling all of this in application

Testing

mvn test assembly:single

Build

mvn compile assembly:single

Run

java -cp target/msize-app-1.0-jar-with-dependencies.jar com.msize.app.Main

Using

Open in browser: http://[host address]:4567

Stop

Press in console with runned java: Ctrl + C