conn <-----------------------------> conn

link <-----------------------------> link

(link set) <---------------------> (link set)

coor <------------------------------> coor

tunnel <===========================> tunnel

• back server, back client: 负责建立tunnel
• front server: 负责接受玩家连接
• coor, link set: 负责管理link
• link: 抽象的概念，实际连接在tunnel上的映射

如果没有搭建过go 的workspace，参考install.sh里面的脚本

go install gotunnel

###launch gate(defaut port 8001, 8002):

./gotunnel -gate

###launch node(defaut service port 1234):

./gotunnel -back_addr=127.0.0.1:8002 settings.conf

###launch service:

nc -lk 1234

###launch client:

nc 127.0.0.1 8001