bypass nodejs express-http-proxy from some requests

Question

I have an express-http-proxy used to redirect the request to another server. I would like to redirect some requests only, here below are the redirected requests code;

app.use('/api', proxy('abc.com', {
// preserveHostHdr: true,
https: isHttps,
proxyReqPathResolver: function (req) {
    return require('url').parse(req.url).path;
}}));

I tried

app.use('/', proxy('abc.com', {
// preserveHostHdr: true,
https: isHttps,
proxyReqPathResolver: function (req) {
    return require('url').parse(req.url).path;
}}));

after the first block to bypass any other requests but I found out that proxy keeps forwarding any request. is there a way to bypass the proxy and call some HTML files on the same host?

Answer 1

https://github.com/villadora/express-http-proxy

filter (supports Promises) The filter option can be used to limit what requests are proxied. Return true to continue to execute proxy; return false-y to skip proxy for this request.

app.use('/proxy', proxy('www.google.com', {
  filter: function(req, res) {
     return req.url === 'http://www.urltobeproxied.com';
  }
}));

also you can intercept to return data of your choice

app.use('/proxy', proxy('www.google.com', {
  userResDecorator: function(proxyRes, proxyResData, userReq, userRes) {
    data = JSON.parse(proxyResData.toString('utf8'));
    data.newProperty = 'exciting data';
    return JSON.stringify(data);
  }
}));

Answer 2

I found the solution as bellow; I must first declare a static path to express and all of the path content will be public. after that ı did the redirection.

app.use('/api', proxy('abc.com', {
        // preserveHostHdr: true,
        https: isHttps,
            proxyReqPathResolver: function (req) {
            return require('url').parse(req.url).path;
        }
    }));

app.use(express.static("./web"));
app.get('/',function(req,res){
         res.sendFile(require('path').join(__dirname, ''));
  });