The server committed a protocol violation. Section=ResponseStatusLine

.NET 4 project ... i use this code

Code:

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Uri uri = new Uri("http://www.test.com:" + port + @"/admin.cgi?pass=" + pass + "&mode=viewxml");
                       
                        HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uri);
                        req.Credentials = CredentialCache.DefaultCredentials;
                       
                        using (HttpWebResponse res = (HttpWebResponse)req.GetResponse())
                        {
                            StreamReader sr = new StreamReader(res.GetResponseStream());
                        }

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and i get error

The server committed a protocol violation. Section=ResponseStatusLine

i tried to add

Code:

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req.ProtocolVersion = HttpVersion.Version10;
req.KeepAlive = false;

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