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Sample file https://github.com/cefsharp/CefSharp/blob/master/CefSharp.Example/Handlers/ExampleResourceRequestHandler.cs

       //Example of setting User-Agent in every request.
        var headers = request.Headers;
        headers.Clear();

        var userAgent = headers["User-Agent"];
        headers["User-Agent"] = userAgent + " CefSharp";

        request.Headers = headers;

I grabbed the packet through fiddler and saw that the header contains "Sec-Fetch-

Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User:? 1 "

How can I hide or delete these? I use "headers.Clear ()" but it has no effect

        var headers = request.Headers;
        foreach(string key in headers)
        {
            if (key.StartsWith("Sec-Fetch"))
            {
                request.SetHeaderByName(key, "", true);
            }
        }

Set to null, but only the sec-fech-xxx value has changed.

Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1

Thank you

Connell.O'Donnell
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Sivyer Lu
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  • I'd suggest trying to remove the headers from the collection rather than clearing it. Alternative try http://cefsharp.github.io/api/79.1.x/html/M_CefSharp_IRequest_SetHeaderByName.htm – amaitland Apr 10 '20 at 20:47
  • Does not work，Set to null, but only the sec-fech-xxx value has changed :Sec-Fetch-Site: none Sec-Fetch-Mode: navigate Sec-Fetch-User: ?1 – Sivyer Lu Apr 11 '20 at 01:34
  • You'll have to ask on https://magpcss.org/ceforum/index.php – amaitland Apr 11 '20 at 01:45
  • Please check my below answer, Hope it will be useful for you: https://stackoverflow.com/a/70910231/18068565 – ladecruze Jan 29 '22 at 22:23

0 Answers0