$ rebar3 compile
$ rebar3 shell --apps=happy --config=./config/sys.config
$ rebar3 shell --apps=gate --config=./config/sys.gate.config
$ rebar3 as prod release -n happy
$ rebar3 as prod tar

gate
happy
mongodb
protobuf
websocket

> rebar3 --version
rebar 3.5.0 on Erlang/OTP 20 Erts 9.0.5

get session
curl http://127.0.0.1:8090/get?echo=session

get session by js_code
curl http://127.0.0.1:8090/get?echo=js_code&js_code=xxx

post request
curl -d "echo=session" http://127.0.0.1:8090/post

post request by js_code
curl -d "echo=js_code&js_code=xxx" http://127.0.0.1:8090/post

websocket connection by session
http://127.0.0.1:8090/websocket/login?3rd_session=xxx

tcp连接池
与其它节点通信方式选择和协议定义