How to retrieve headers on AppHarbor hosted WCF-applications

Question

Currently I have a WCF-based service deployed on AppHarbor. I'm having a issue with a GET operation defined like this:

[WebGet(UriTemplate = "feedcallback")]
        Stream HandleMessageGet();

And implemented like this:

public Stream HandleMessageGet()
{
    var value = WebOperationContext.Current.IncomingRequest.Headers["header.name"];
    //Do stuff with header value
    return ms;
}

Whenever I run this WCF application on localhost for debugging etc. it works fine; I can retrieve the header value. But whenever I deploy the project to AppHarbor, the get request doesn't function properly anymore because it can't retrieve the header from the WebOperationContext.

What could be causing this issue and how could this be solved?

Answer 1

In the end it seems to be an issue with the AppHarbor loadbalancer not forwarding headers with dots in them.

See: http://support.appharbor.com/discussions/problems/37218-header-not-being-forwarded