e5d578a849
Disable the confirmation dialog when deleting files in the VS Code explorer to streamline the development workflow and reduce friction during file management operations.
91 lines
1.5 KiB
JavaScript
91 lines
1.5 KiB
JavaScript
/*!
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* forwarded
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* Copyright(c) 2014-2017 Douglas Christopher Wilson
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* MIT Licensed
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*/
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'use strict'
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/**
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* Module exports.
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* @public
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*/
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module.exports = forwarded
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/**
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* Get all addresses in the request, using the `X-Forwarded-For` header.
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*
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* @param {object} req
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* @return {array}
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* @public
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*/
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function forwarded (req) {
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if (!req) {
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throw new TypeError('argument req is required')
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}
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// simple header parsing
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var proxyAddrs = parse(req.headers['x-forwarded-for'] || '')
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var socketAddr = getSocketAddr(req)
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var addrs = [socketAddr].concat(proxyAddrs)
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// return all addresses
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return addrs
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}
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/**
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* Get the socket address for a request.
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*
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* @param {object} req
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* @return {string}
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* @private
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*/
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function getSocketAddr (req) {
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return req.socket
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? req.socket.remoteAddress
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: req.connection.remoteAddress
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}
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/**
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* Parse the X-Forwarded-For header.
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*
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* @param {string} header
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* @private
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*/
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function parse (header) {
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var end = header.length
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var list = []
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var start = header.length
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// gather addresses, backwards
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for (var i = header.length - 1; i >= 0; i--) {
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switch (header.charCodeAt(i)) {
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case 0x20: /* */
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if (start === end) {
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start = end = i
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}
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break
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case 0x2c: /* , */
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if (start !== end) {
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list.push(header.substring(start, end))
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}
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start = end = i
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break
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default:
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start = i
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break
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}
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}
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// final address
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if (start !== end) {
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list.push(header.substring(start, end))
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}
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return list
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}
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