参考：
https://gist.github.com/fnando/1101211
条件：
1. 可远程访问的服务器：username@dev.example.com
2. 指向该服务器的域名，如：dev.example.com
步骤：
1. 服务器上nginx 配置 /etc/nginx/sites-available/tunnel.conf
upstream tunnel {
server 127.0.0.1:9000;
}
server {
listen 80;
server_name dev.example.com;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://tunnel;
}
# websocket 相关
location /cable {
proxy_pass http://tunnel;
proxy_http_version 1.1;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
}
}
2 重启 nginx
$ cd /etc/nginx/sites-enabled;
$ sudo ln -s /etc/nginx/sites-available/tunnel.conf tunnel.conf
$ sudo nginx -s reload
3 如果服务器上有防火墙，把本地的外网ip（通过ip138.com获取）添加到防火墙白名单
例: fail2ban修改 /etc/fai2ban/jail.local的 ignoreip
4 将远程服务器的9000端口映射到本地的3000端口
ssh -vNR 9000:localhost:3000 deploy@demo.1kuaizhuan.cn
5 项目相关（微信测试公众号及本地代码）的域名修改
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