node 服务端获取客户端ip

var get_client_ip = function(req) {

var ip = req.headers['x-forwarded-for'] ||

req.ip ||

req.connection.remoteAddress ||

req.socket.remoteAddress ||

req.connection.socket.remoteAddress || '';

if(ip.split(',').length>0){

ip = ip.split(',')[0]

}

return ip;

};