Adding Custom Http Headers to Web Service Proxy

Question

I have an old application that uses the classic Web Service Proxy to interact with a Java Web Service. A while back the Web Service hoster decided to require a custom HTTP header to be sent with each request in order to access the service - otherwise the requests are thrown out outright (looks like this is some sort of router requirement). Regardless of what the reason I need to inject a custom HTTP header into the request.

Is there any way to interact with the actual Http client to do things like add custom headers?

Answer 1

Does this approach work?

Answer 2

You should be able to do this by overriding the GetWebRequest method of the proxy class in a partial class in a separate file. After calling the base class method, you should be able to modify the returned HttpWebRequest however you like, then return it from the method:

public partial class MyServiceProxy {
    protected override WebRequest GetWebRequest(Uri uri) {
        HttpWebRequest request = (HttpWebRequest) base.GetWebRequest(uri);
        // do what you will with request.
        return request;
    }
}