How to remove proxy from WebRequest and leave DefaultWebProxy untouched

Question

I use FtpWebRequest to do some FTP stuff and I need to connect directly (no proxy). However WebRequest.DefaultWebProxy contains IE proxy settings (I reckon).

WebRequest request = WebRequest.Create("ftp://someftpserver/");
// request.Proxy is null here so setting it to null does not have any effect
WebResponse response = request.GetResponse();
// connects using WebRequest.DefaultWebProxy

My code is a piece in a huge application and I don't want to change WebRequest.DefaultWebProxy because it is global static property and it can have adverse impact on the other parts of the application.

Any idea how to do it?

score 34 · Accepted Answer · answered Oct 13 '09 at 12:26

34

try setting the proxy to an empty WebProxy, ie:

request.Proxy = new WebProxy();

This should create an empty proxy.

answered Oct 13 '09 at 12:26

Alastair Pitts

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No probs, this one stumped me a little while ago. – Alastair Pitts Oct 13 '09 at 12:53
2

It's worth noting that the [MSDN documentation](https://msdn.microsoft.com/en-us/library/czdt10d3(v=vs.110).aspx) says to use `GlobalProxySelection.GetEmptyWebProxy()` to obtain an empty proxy. But if you try this Visual Studio will inform you that the `GlobalProxySelection` class is obsolete and you should use `WebRequest.DefaultWebProxy` instead ... which is exactly what the OP does **not** want. – David Jun 14 '17 at 12:22

score 9 · Answer 2 · answered Mar 27 '10 at 09:14

9

Actually setting it to null will be enough as well to disable auto proxy detection, you might save some cycles :)

request.Proxy = null;

http://msdn.microsoft.com/en-us/library/fze2ytx2.aspx

answered Mar 27 '10 at 09:14

dr. evil

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Actually, setting to null didn't help if I remember correctly (as said in the snippet comment). Disabling auto proxy detection would affect the rest of the application which I can't do either. Thanks anyway – Elephantik Apr 06 '10 at 13:02

score 0 · Answer 3 · edited Mar 30 '16 at 15:00

        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(yourRequestUrl);
        if (webRequest.Proxy != null)
        {
            webRequest.Proxy = null;
        }

        webRequest.KeepAlive = true;
        webRequest.Method = "POST";
        webRequest.ContentType = "application/json";
        var json = JsonConvert.SerializeObject(yourObject);
        ASCIIEncoding encoder = new ASCIIEncoding();
        byte[] postBytes = encoder.GetBytes(json);
        webRequest.ContentLength = postBytes.Length;
        webRequest.CookieContainer = new CookieContainer();
        String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(string.Format("{0}:{1}", userName, password)));
        webRequest.Headers.Add("Authorization", "Basic " + encoded);
        Stream requestStream = webRequest.GetRequestStream();
        requestStream.Write(postBytes, 0, postBytes.Length);
        requestStream.Close();

        HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
        string result;
        using (StreamReader rdr = new StreamReader(response.GetResponseStream()))
        {
                result = rdr.ReadToEnd();
}

score 0 · Answer 4 · answered May 20 '19 at 15:31

0

Add this to config:

<system.net>
  <defaultProxy enabled="false" useDefaultCredentials="false">
    <proxy />
    <bypasslist />
    <module />
  </defaultProxy>
</system.net>

answered May 20 '19 at 15:31

Andrii Viazovskyi

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How to remove proxy from WebRequest and leave DefaultWebProxy untouched

4 Answers4

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