Example NATS chat application

This application is an example on how to use NATS in rust. Features implemented are Authentication, Publish-Subscribe and Request-Reply.

Users

• admin is allowed everything
• client may pusblish and subscribe to the chat channel
• guest may only read chat messages

Commands

• Writing anything will publish text as a messages
• "invalid" will send a non json string
• "request xyz" will send xyz as a request, getting an automated response