(http - https) proxy rapleaf

rapleaf-proxy.js

var http = require('http'),
  httpProxy = require('http-proxy');

var proxy = new httpProxy.HttpProxy();

proxy.on('proxyError', function(err, req, res) {
  console.log('proxy.error: ' + err);
});

proxy.on('end', function(req, res) {
  console.log('proxy.end');
});

http.createServer(function(req, res) {
  proxy.proxyRequest(req, res, {
    host: 'personalize.rapleaf.com',
    port: 443,
    https: true
  });
}).listen(8000);

$ curl -v "http://localhost:8000/v4/dr?first=John&last=Doe&email=personalize%40example.com&api_key=78ad9ddc21e3c220cc5da024b6dbe13"

Strangely if you submit the request directly
curl -v "https://personalize.rapleaf.com/v4/dr?first=John&last=Doe&email=personalize%40example.com&api_key=78ad9ddc21e3c220cc5da024b6dbe13" the Content-Length is present.

thats a clue! so it sounds like nhp is removing the Content-Length header.