How to send an http RequestHeader using Selenium 2?

I needed to send an Http request with a few modified headers. After serveral hours trying to find an equivalent method to that of Selenium RC Selenium.addCustomRequestHeader for Selenium 2, I gave up and used JavaScript for my purposes. I have expected this to be a lot easier!

Does someone know a better method?

This is what I have done:

javascript.js

var test = {
    "sendHttpHeaders": function(dst, header1Name, header1Val, header2Name, header2Val) {
        var http = new XMLHttpRequest();

        http.open("GET", dst, "false");
        http.setRequestHeader(header1Name,header1Val);
        http.setRequestHeader(header2Name,header2Val);
        http.send(null);
    }
}

MyTest.java

// ...

@Test
public void testFirstLogin() throws Exception {
    WebDriver driver = new FirefoxDriver();

    String url = System.getProperty(Constants.URL_PROPERTY_NAME);
    driver.get(url);

    // Using javascript to send http headers
    String scriptResource = this.getClass().getPackage().getName()
        .replace(".", "/") + "/javascript.js";

    String script = getFromResource(scriptResource)
            + "test.sendHttpHeaders(\"" + url + "\", \"" + h1Name
            + "\", \"" + h1Val + "\", \"" + h2Name + "\", \"" + h2Val + "\");";
    LOG.debug("script: " + script);

    ((JavascriptExecutor)driver).executeScript(loginScript);

    // ...
}

// I don't like mixing js with my code. I've written this utility method to get
// the js from the classpath
/**
 * @param src name of a resource that must be available from the classpath
 * @return new string with the contents of the resource
 * @throws IOException if resource not found
 */
public static String getFromResource(String src) throws IOException {
    InputStream is = Thread.currentThread().getContextClassLoader().
            getResourceAsStream(src);
    if (null == is) {
        throw new IOException("Resource " + src + " not found.");
    }
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    StringWriter sw = new StringWriter();
    PrintWriter pw = new PrintWriter(sw);

    String line = null;
    int nLines = 0;
    while (null != (line = br.readLine())) {
        pw.println(line);
        nLines ++;
    }
    LOG.info("Resource " + src + " successfully copied into String (" + nLines + " lines copied).");
    return sw.toString();
}

// ...

Notice: To simplify this post, I have edited my original code. I hope I haven't introduced any errors!