C# PhantomJSDriver with Fiddler proxy and HTTP authentication: traffic not captured

Question

I am trying to navigate to an application on a localhost site that requires authentication using PhantomJSDriver and passing username:password into the URL. In order to capture response codes I'm using a Fiddler proxy from Jim Evan's example https://github.com/jimevans/WebDriverProxyExamples.

PhantomJSDriver navigates successfully (using NTLM/Basic auth) but Fiddler doesn't capture the traffic.

public static int NavigateTo(this IWebDriver driver, string targetUrl, TimeSpan timeout, bool printDebugInfo)
{
    int responseCode = 0;
    DateTime endTime = DateTime.Now.Add(timeout);
    SessionStateHandler responseHandler = delegate(Session targetSession)
    {
        if (targetSession.responseCode >= 300 && targetSession.responseCode < 400)
        {
            targetUrl = targetSession.GetRedirectTargetURL();
        }
        else
            responseCode = targetSession.responseCode;
    };

    // Attach the event handler, perform the navigation, and wait for
    // the status code to be non-zero, or to timeout. Then detach the
    // event handler and return the response code.
    FiddlerApplication.AfterSessionComplete += responseHandler;
    driver.Url = targetUrl;
    while (responseCode == 0 && DateTime.Now < endTime)
    {
        System.Threading.Thread.Sleep(100);
    }

    FiddlerApplication.AfterSessionComplete -= responseHandler;
    return responseCode;
}

I was able to capture the traffic when using ChromeDriver with the same application and also for a website that didn't require authentication using PhanotmJSDriver. The only scenario it doesn't work in is PhantomJSDriver + authentication website.

Update: I discovered the issue thanks to Dead Link http://docs.telerik.com/fiddler/observe-traffic/troubleshooting/notraffictolocalhost/. It was nothing to do with authentication rather getting traffic from localhost.

The solution was to use the local machine name in place of localhost in the URL.

Answer 1

I discovered the issue thanks to http://docs.telerik.com/fiddler/observe-traffic/troubleshooting/notraffictolocalhost/. It was nothing to do with authentication rather getting traffic from localhost. I'm not sure why, but it seems the combination of using PhantomJSDriver to navigate to a localhost url and Fiddler to capture the traffic did not work.

The solution was to use the local MACHINE NAME in place of 'localhost' in the URL.