Modify node-http-proxy request body

Question

I'm using node-http-proxy to try and proxy a request in my node/express web server. I'm attempting to append a body to a particular request at the route level, but the response I'm getting is indicating that the req.body doesn't exist.

const proxy = httpProxy.createProxyServer({
    changeOrigin: true,
    target: process.env.API_URL,
    port: 80
});


server.post('/api/login_check', (req, res) => {
    req.url = req.url.replace('/api', '');
    req.headers['Content-Type'] = 'application/json';
    req.headers['accept'] = 'application/json';
    req.body = JSON.stringify({
        username: process.env.USERNAME,
        password: process.env.PASSWORD
    });
    proxy.web(req, res);
});

Is this possible to do at the route level with node-http-proxy?

score 1 · Answer 1 · answered Jan 09 '19 at 12:27

if i understood you correctly.

proxy.web can work on route level as long as you are passing req and res object
you can change the body on an incoming request on the proxy event

proxy.on('proxyReq', function(proxyReq, req, res, options) {
  //her you can create condition identifying your path
  if(req.body && req.url == "/user" && req.method=="POST"){
    let bodyData = JSON.stringify(req.body);
    proxyReq.setHeader('Content-Length', Buffer.byteLength(bodyData));
    // Stream the content
    proxyReq.write(bodyData);

  }
});

Modify node-http-proxy request body

1 Answers1