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Print IP address and headers in Cloud Functions
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const functions = require('firebase-functions'); | |
const util = require('util'); | |
exports.helloWorld = functions.https.onRequest((req, res) => { | |
// For Firebase Hosting URIs, use req.headers['fastly-client-ip'] | |
// For callable functions, use rawRequest | |
// Some users have better success with req.headers['x-appengine-user-ip'] | |
const ipAddress = req.headers['x-forwarded-for'] || req.connection.remoteAddress; | |
const headers = JSON.stringify(req.headers, null, 2); | |
const message = util.format("<pre>Hello world!\n\nYour IP address: %s\n\nRequest headers: %s</pre>", ipAddress, headers); | |
res.send(message); | |
}); |
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