Please, find the test task below and inform us about the time you need to complete it:

Create a simple chat with CLI interface


- Both client and server should be console apps. Users send messages to chat via stdin prompt

- Users must specify their names when joining chat

- Each message is broadcasted to all chat members

- Same user (identified by same name) can have multiple simultaneous clients running.

- Online status calculation: user is "online" when he/she has at least one client running, otherwise user is "offline".

- Server must notify all chat members when some user comes online or goes offline.


Example output:

 *** Alice is online

 *** Bob is online

 Alice:     anybody home?

 Bob:       hi

 *** Alice is offline



- Client and server part should be written using Golang

- Network protocol must be extensible. It should be possible to add new features in future.

- Clean, readable code. Simplicity is a plus

- All errors must be handled, some examples:

- network failures

- slow clients

- invalid messages (like attempt to send message on behalf of other user)

- etc


Thank you and good luck! :)