如何在節(jié)點(diǎn)中確定用戶的IP地址如何從控制器內(nèi)確定給定請(qǐng)求的IP地址？例如(以明示方式)：app.post('/get/ip/address', function (req, res) {
// need access to IP address here})
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var ip = req.headers['x-forwarded-for'] || req.connection.remoteAddress || req.socket.remoteAddress || (req.connection.socket ? req.connection.socket.remoteAddress : null);
req.headers['x-forwarded-for']x-forwarded-for
X-轉(zhuǎn)發(fā)-用于： client, proxy1, proxy2, proxy3
proxy1, proxy2proxy3. proxy3
x-forwarded-for
var ip = (req.headers['x-forwarded-for'] || '').split(',').pop() ||
req.connection.remoteAddress ||
req.socket.remoteAddress ||
req.connection.socket.remoteAddress
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