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获取客户端 IP地址

获取客户端 IP地址

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function getClientIp(req) {
return req.headers['x-forwarded-for'] ||
req.connection.remoteAddress ||
req.socket.remoteAddress ||
req.connection.socket.remoteAddress;
};

代码第一段判断是否有反向代理IP(头信息:x-forwarded-for),在判断connection的远程IP,以及后端的socket的IP。