nyagami
127 lines
3.4 KiB
JavaScript
127 lines
3.4 KiB
JavaScript
import http from 'http';
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import httpProxy from 'http-proxy';
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const CLIENT_HOST = 'http://localhost:3000';
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const proxy = httpProxy.createProxyServer({});
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const disAllowedHeaders = [
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'sec-ch-ua',
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'sec-ch-ua-mobile',
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'sec-ch-ua-platform',
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'sec-fetch-site',
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'origin',
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'sec-fetch-site',
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'sec-fetch-dest',
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'pragma',
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];
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const proxyRequest = (req, res) => {
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const _url = new URL(req.url);
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proxy.web(req, res, {
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target: _url.origin,
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selfHandleResponse: true,
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followRedirects: true,
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});
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};
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proxy.on('proxyRes', function (proxyRes, req, res) {
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var statusCode = proxyRes.statusCode;
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if (
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statusCode === 301 ||
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statusCode === 302 ||
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statusCode === 303 ||
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statusCode === 307 ||
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statusCode === 308
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) {
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req.method = 'GET';
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req.headers['content-length'] = '0';
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delete req.headers['content-type'];
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// Remove all listeners (=reset events to initial state)
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req.removeAllListeners();
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// Remove the error listener so that the ECONNRESET "error" that
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// may occur after aborting a request does not propagate to res.
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// https://github.com/nodejitsu/node-http-proxy/blob/v1.11.1/lib/http-proxy/passes/web-incoming.js#L134
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proxyReq.removeAllListeners('error');
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proxyReq.once('error', function catchAndIgnoreError() {});
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proxyReq.abort();
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// Initiate a new proxy request.
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proxyRequest(req, res);
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return false;
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}
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for (const _header in proxyRes.headers) {
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res.setHeader(_header, proxyRes.headers[_header]);
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}
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delete proxyRes.headers['set-cookie'];
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delete proxyRes.headers['set-cookie2'];
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res.setHeader('Access-Control-Allow-Origin', CLIENT_HOST);
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res.setHeader('Access-Control-Allow-Credentials', true);
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proxyRes.on('data', function (chunk) {
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res.write(chunk);
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});
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proxyRes.on('end', function () {
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res.end();
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});
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});
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var temp_cookies = null;
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const cookiesHandler = (req, res) => {
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let cookies = '';
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res.setHeader('Access-Control-Allow-Origin', CLIENT_HOST);
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res.setHeader('Access-Control-Allow-Credentials', true);
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req.on('readable', () => {
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cookies += req.read();
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});
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req.on('end', () => {
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temp_cookies = cookies;
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res.end();
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});
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};
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http
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.createServer(function (req, res) {
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const path = req.url.replace(/^\//, '');
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if (req.headers['access-control-request-method']) {
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res.setHeader(
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'access-control-allow-methods',
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req.headers['access-control-request-method'],
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);
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delete req.headers['access-control-request-method'];
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}
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if (req.headers['access-control-request-headers']) {
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res.setHeader(
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'access-control-allow-headers',
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req.headers['access-control-request-headers'],
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);
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delete req.headers['access-control-request-headers'];
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}
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if (path === 'cookies') {
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cookiesHandler(req, res);
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} else {
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const _url = new URL(path);
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for (const _header of disAllowedHeaders) {
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delete req.headers[_header];
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}
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for (const _header in req.headers) {
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if (req.headers[_header]?.includes('localhost')) {
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delete req.headers[_header];
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}
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}
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req.headers['sec-fetch-mode'] = 'cors';
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if (temp_cookies) {
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req.headers['cookie'] = temp_cookies;
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}
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req.headers.host = _url.host;
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req.url = _url.toString();
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res.statusCode = 200;
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if (req.method === 'OPTIONS') {
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res.end();
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} else {
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proxyRequest(req, res);
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}
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}
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})
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.listen(3001);
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