Function setupProxyMiddleware

server_setup.js:308–358

(app)

};

var setupProxyMiddleware = function(app) {
  if (config.isProduction) { return; }
  if (!config.proxy) { return; }

  // Don't proxy static files with sha prefixes, redirect them
  const regex = /\/[0-9a-f]{40}\/.*/;
  const regex2 = /\/[0-9a-f]{40}-[0-9a-f]{40}\/.*/;
  // based on new format of branch name + date
  const regex3 = /^\/(production|next)-\d{4}-\d{2}-\d{2}-\d{2}-\d{2}-\d{2}\/.*/;
  app.use(function(req, res, next) {
    let newPath;
    if (regex.test(req.path)) {
      newPath = req.path.slice(41);
      return res.redirect(newPath);
    }
    if (regex2.test(req.path)) {
      newPath = req.path.slice(82);
      return res.redirect(newPath);
    }
    if (regex3.test(req.path)) {
      const split = req.path.split('/');
      newPath = '/' + split.slice(2).join('/');
      return res.redirect(newPath);
    }
    return next();
  });

  const httpProxy = require('http-proxy');

  let target = process.env.COCO_PROXY_TARGET || `https://direct.staging.${config.product}.com`;
  const headers = {};

  if (process.env.COCO_PROXY_NEXT) {
    target = `https://direct.next.${config.product}.com`;
    headers['Host'] = `next.${config.product}.com`;
  }

  const proxy = httpProxy.createProxyServer({
    target,
    headers,
    secure: false
  });
  console.info('Using dev proxy server');
  return app.use(function(req, res, next) {
    req.proxied = true;
    return proxy.web(req, res, function(e) {
      console.warn("Failed to proxy: ", e);
      return res.status(502).send({message: 'Proxy failed'});
    });
  });
};