Proxy with client certificates

Created by: javierpavon2000

I'm trying to perform a proxy to an url that needs a client certificate. The context is:

• I've installed a p12 file in the browser and after that I can access to the endpoint https://aaa.com/webservice:4278
• I've extracted the key and the certificate of the p12 file installed in the browser

Now, I've defined an object like that

var objConf = { target: 'https://aaa.com/webservice:4278',
  secure: false,
  headers: { host: 'scytl-sessmgm.cloudapp.net:4278' },
  ssl:
   { key: '-----BEGIN RSA PRIVATE KEY----- ..... -----END RSA PRIVATE KEY-----',
     cert: '-----BEGIN CERTIFICATE----- ... -----END CERTIFICATE-----' 
    }
}

and the, I create the proxy

var proxy = httpProxy.createProxyServer(objConf);

But, it doesn't work, the request always returns a 403 status code.

Am I doing something wrong? Any help? Thanks