HttpWebClient always send Cache-Control and Pragma headers when proxy used

[zxcvqwerasdf]

I tried different ways, but when you use HttpClient with Proxy you will get Cache-Control: no-cache and Pragma: no-cache in request headers.
It's possible to prevent it? I don't need these headers when using proxy.

[MihaZupan]

HttpClient on its own will not inject these headers. Could it be that whatever proxy server you're using is doing so for you?

[zxcvqwerasdf]

HttpClient on its own will not inject these headers. Could it be that whatever proxy server you're using is doing so for you?

 var socketHandler = new SocketsHttpHandler
 {
     AllowAutoRedirect = false,
     UseCookies = false,
     UseProxy = true,
     Proxy = new WebProxy($"http://{proxy.host}:{proxy.port_http}")
 };

 var httpClient = new HttpClient(socketHandler, true);
 HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, URL);
 request.Version = new Version(1, 1);
 var response = await httpClient.SendAsync(request);

If you will use local proxy, you will find these headers

in request

but if you change

UseProxy = false

there will be no these headers (you can check it by writing some server that check request header/print it in response headers)

[zxcvqwerasdf]

Sorry, checked it in 2 another local proxies and there is no these headers