wget http://turnserver.open-sys.org/downloads/v4.5.0.6/turnserver-4.5.0.6-CentOS7.2-x86_64.tar.gz
tar -zxvf turnserver-4.5.0.6-CentOS7.2-x86_64.tar.gz
cd turnserver-4.5.0.6/
openssl req -x509 -newkey rsa:2048 -keyout /etc/turn_server_pkey.pem -out /etc/turn_server_cert.pem -days 99999 -nodes
turnadmin -a -u ninefingers -r north.gov -p youhavetoberealistic
配置文件
listening-port=3478
listening-ip=外网ip
external-ip=外网ip
user=eltyl:123456
userdb=/var/db/turndb //使用sqlite 如果实用配置文件则为 userdb=/etc/turnuserdb.conf
realm=www.eltyl.com
turnserver -L 外网ip -o -a -f -r north.gov
有时候服务器设置了双ip，监听的时候使用内网ip就会成功了
测试地址
https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/
