checkheaders | Automatically exported from code.google.com/p/checkheaders

You don't provide your writeFile and writeMetadata. But I think they may like:

Try like this in two param instead three

A dirty way could be your values into the Context.Items collection under a separate well known key inside CheckHeaders.Invoke method, and to query the context items for the presence of the values inside BaseController.OnActionExecuting method and dependig on it to act appropriately.

I think you have to specify a key for the header inside .matchHeader({}), which is actually the header name and it seems like the correct way of using it, is as stated below:

.matchHeader('accept', 'application/json')

So in your case you are missing the header name. Source

You can also take a brief look into the source of this module (the affected line).

I @netzahdzc sorry if this is not the reply you hope, but I don't work with Fiware technologies for a while now, and so I don't recall everything but I will try to help.

Is it right to use account.lab.fiware.org, as resource and access host or should I use a different one?

I think you are using the right one, please refer to the configuration files of my project at GitHub, this project is "old" and so some things may have already been change from Fiware side... as you can see in the PepProxy - config.js the instance I used was the same as you: