Simple TCP server

server provides queue functionality to clients
one queue per client connection - the queue is created when a client connects and is destroyed when the client disconnects
the server should be able to handle multiple simultaneous client connections
communication protocol:
- line based
- lines start with the command (in or out), the "in" command is followed by the payload
- the server returns results one per line
package the server as an OTP app and use OTP behaviours and supervision structure

Build & Run

rebar3 is required to run things. Verified on Erlang/OTP 21

$ make compile-all
$ make run

TCP server should be started on port 5555

ranch was used to handle TCP server calls and "queue" protocol

To run unit test run

$ make eunit