29 lines
975 B
JavaScript
29 lines
975 B
JavaScript
const express = require('express');
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const ipaddr = require('ipaddr.js');
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// Instantiate parser middleware here with application-level size limits
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const jsonParser = express.json({ limit: '200mb' });
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const urlencodedParser = express.urlencoded({ extended: true, limit: '200mb' });
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/**
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* Gets the IP address of the client from the request object.
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* @param {import('express'.Request)} req Request object
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* @returns {string} IP address of the client
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*/
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function getIpFromRequest(req) {
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let clientIp = req.connection.remoteAddress;
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let ip = ipaddr.parse(clientIp);
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// Check if the IP address is IPv4-mapped IPv6 address
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if (ip.kind() === 'ipv6' && ip instanceof ipaddr.IPv6 && ip.isIPv4MappedAddress()) {
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const ipv4 = ip.toIPv4Address().toString();
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clientIp = ipv4;
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} else {
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clientIp = ip;
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clientIp = clientIp.toString();
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}
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return clientIp;
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}
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module.exports = { jsonParser, urlencodedParser, getIpFromRequest };
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