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28 lines
924 B
JavaScript
28 lines
924 B
JavaScript
/**
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* The IP address of the client that just made a request to this application, whether
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* or not the TRUST_PROXY env variable is true and if endpoint accessed through a proxy.
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* @param {Request} request The endpoint Request object
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* @returns The IP address of the client that just made a request
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*/
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const getRemoteAddress = (request) => {
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let remoteAddress = request.ip;
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// Assert if "X-Forwarded-For" header contains any addresses
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if (process.env.TRUST_PROXY && !_.isEmpty(request.ips)) {
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// eslint-disable-next-line prefer-destructuring
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remoteAddress = request.ips[0];
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}
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// Convert address from IPV6 to IPV4 if client device is IPV4.
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const defaultIPV6Regex = /^::ffff:((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\.?\b){4}$/g;
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if (remoteAddress.match(defaultIPV6Regex)) {
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remoteAddress = remoteAddress.replace('::ffff:', '');
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}
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return remoteAddress;
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};
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module.exports = {
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getRemoteAddress,
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};
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