How to set a referer in C# using EO.WebBrowser

Question

How to set a referer in C# using EO.WebBrowser

Looking for a solution to modify the referer in EO.WebBrowser. I know you can change the User-Agent using: webView1.CustomUserAgent, but it seems there isn't a direct method for changing the referrer. Are there any alternative approaches to achieve this, perhaps through JavaScript or another method?

I've tried capturing the beforesendheaders event with:

webView1.BeforeSendHeaders += new EO.WebBrowser.RequestEventHandler(webView1_BeforeSendHeaders);

, but it hasn't been very helpful.

I initially started working on a project with awesomium, but I encountered issues where some websites weren't loading and displaying only a blank screen. While I was able to change both the referer and user agent in awesomium, I require both functionalities to proceed.

Any ideas or suggestions would be greatly appreciated.

javascript c#.net webbrowser-control awesomium

Answer 1

Answer №1

After some exploration, I managed to discover the solution by leveraging javascript. Below is the code snippet:

public partial class Form1 : Form
{
    private const string JS_referer_function = "function navigateToUrl(url) {var f = document.createElement(\"FORM\"); f.action = url; var indexQM = url.indexOf(\"?\"); if (indexQM>=0) { var params = url.substring(indexQM+1).split(\"&\"); for (var i=0; i<params.length; i++) { var keyValuePair = params[i].split(\"=\"); var input = document.createElement(\"INPUT\"); input.type=\"hidden\"; input.name  = keyValuePair[0]; input.value = keyValuePair[1]; f.appendChild(input); } } document.body.appendChild(f); f.submit(); }";
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        webView1.LoadUrlAndWait("http://referer.com");
        webView1.EvalScript(JS_referer_function);
        webView1.EvalScript("navigateToUrl(\"http://192.168.0.108/referer\");");
    }
}

This method involves initially loading , then utilizing javascript to navigate to while referencing as the referer.

Answer 2

After some exploration, I managed to discover the solution by leveraging javascript. Below is the code snippet:

public partial class Form1 : Form
{
    private const string JS_referer_function = "function navigateToUrl(url) {var f = document.createElement(\"FORM\"); f.action = url; var indexQM = url.indexOf(\"?\"); if (indexQM>=0) { var params = url.substring(indexQM+1).split(\"&\"); for (var i=0; i<params.length; i++) { var keyValuePair = params[i].split(\"=\"); var input = document.createElement(\"INPUT\"); input.type=\"hidden\"; input.name  = keyValuePair[0]; input.value = keyValuePair[1]; f.appendChild(input); } } document.body.appendChild(f); f.submit(); }";
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        webView1.LoadUrlAndWait("http://referer.com");
        webView1.EvalScript(JS_referer_function);
        webView1.EvalScript("navigateToUrl(\"http://192.168.0.108/referer\");");
    }
}

This method involves initially loading , then utilizing javascript to navigate to while referencing as the referer.

How to set a referer in C# using EO.WebBrowser

Answer №1

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