SAMPLE

INTRO

SAMPLE is a regular Erlang application.

HEADER

Picture 1. HOW TO SETUP BOTH APP AND SUP IN ERLANG


 -module(sample).
 -behaviour(supervisor).
 -behaviour(application).
 -export([init/1, start/0, start/2, stop/1, main/1]).

OTP

Note that suring start you should specify mauth module. Dafault implementation performs client topic autosubscription.

Picture 2. Implements Erlang/OTP service API


 start()    -> start(normal,[]).
 start(_,_) -> supervisor:start_link({local,SAMPLE},SAMPLE,[]).
 stop(_)    -> ok.

COWBOY

SAMPLE application uses COWBOY as a static HTTP server and as a WebSocket server.

Picture 3. COWBOY setup


 start(_,_) -> cowboy:start_tls(http,n2o_cowboy:env(?MODULE),
                 #{env=>#{dispatch=>n2o_cowboy:points() }}),
               supervisor:start_link({local,sample},sample,[]).