33 lines
1.1 KiB
JavaScript
Executable File
33 lines
1.1 KiB
JavaScript
Executable File
exports.merge = require('utils-merge');
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/**
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* Reconstructs the original URL of the request.
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*
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* This function builds a URL that corresponds the original URL requested by the
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* client, including the protocol (http or https) and host.
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*
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* If the request passed through any proxies that terminate SSL, the
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* `X-Forwarded-Proto` header is used to detect if the request was encrypted to
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* the proxy, assuming that the proxy has been flagged as trusted.
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*
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* @param {http.IncomingMessage} req
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* @param {Object} [options]
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* @return {String}
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* @api private
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*/
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exports.originalURL = function(req, options) {
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options = options || {};
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var app = req.app;
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if (app && app.get && app.get('trust proxy')) {
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options.proxy = true;
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}
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var trustProxy = options.proxy;
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var proto = (req.headers['x-forwarded-proto'] || '').toLowerCase()
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, tls = req.connection.encrypted || (trustProxy && 'https' == proto.split(/\s*,\s*/)[0])
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, host = (trustProxy && req.headers['x-forwarded-host']) || req.headers.host
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, protocol = tls ? 'https' : 'http'
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, path = req.url || '';
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return protocol + '://' + host + path;
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};
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