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https://github.com/http-party/node-http-proxy.git
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26029ba7ac
if functioning as a reverse proxy for host1.foo.com, with a backend target of backend.foo.com:8080, the node proxy should only rewrite the redirect if it is a redirect to somewhere on backend.foo.com:8080
106 lines
2.9 KiB
JavaScript
106 lines
2.9 KiB
JavaScript
var url = require('url'),
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passes = exports;
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var redirectRegex = /^30(1|2|7|8)$/;
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/*!
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* Array of passes.
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*
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* A `pass` is just a function that is executed on `req, res, options`
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* so that you can easily add new checks while still keeping the base
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* flexible.
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*/
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[ // <--
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/**
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* If is a HTTP 1.0 request, remove chunk headers
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*
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* @param {ClientRequest} Req Request object
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* @param {IncomingMessage} Res Response object
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* @param {proxyResponse} Res Response object from the proxy request
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*
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* @api private
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*/
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function removeChunked(req, res, proxyRes) {
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if (req.httpVersion === '1.0') {
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delete proxyRes.headers['transfer-encoding'];
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}
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},
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/**
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* If is a HTTP 1.0 request, set the correct connection header
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* or if connection header not present, then use `keep-alive`
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*
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* @param {ClientRequest} Req Request object
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* @param {IncomingMessage} Res Response object
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* @param {proxyResponse} Res Response object from the proxy request
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*
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* @api private
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*/
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function setConnection(req, res, proxyRes) {
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if (req.httpVersion === '1.0') {
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proxyRes.headers.connection = req.headers.connection || 'close';
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} else if (!proxyRes.headers.connection) {
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proxyRes.headers.connection = req.headers.connection || 'keep-alive';
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}
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},
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function setRedirectHostRewrite(req, res, proxyRes, options) {
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if ((options.hostRewrite || options.autoRewrite || options.protocolRewrite)
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&& proxyRes.headers['location']
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&& redirectRegex.test(proxyRes.statusCode)) {
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var target = url.parse(options.target);
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var u = url.parse(proxyRes.headers['location']);
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// make sure the redirected host matches the target host before rewriting
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if (target.host != u.host) {
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return;
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}
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if (options.hostRewrite) {
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u.host = options.hostRewrite;
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} else if (options.autoRewrite) {
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u.host = req.headers['host'];
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}
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if (options.protocolRewrite) {
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u.protocol = options.protocolRewrite;
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}
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proxyRes.headers['location'] = u.format();
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}
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},
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/**
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* Copy headers from proxyResponse to response
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* set each header in response object.
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*
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* @param {ClientRequest} Req Request object
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* @param {IncomingMessage} Res Response object
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* @param {proxyResponse} Res Response object from the proxy request
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*
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* @api private
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*/
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function writeHeaders(req, res, proxyRes) {
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Object.keys(proxyRes.headers).forEach(function(key) {
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res.setHeader(key, proxyRes.headers[key]);
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});
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},
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/**
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* Set the statusCode from the proxyResponse
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*
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* @param {ClientRequest} Req Request object
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* @param {IncomingMessage} Res Response object
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* @param {proxyResponse} Res Response object from the proxy request
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*
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* @api private
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*/
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function writeStatusCode(req, res, proxyRes) {
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res.writeHead(proxyRes.statusCode);
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}
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] // <--
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.forEach(function(func) {
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passes[func.name] = func;
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});
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