Get request to a url throws exception using Webclient but works fine if open it in browser

Question

I have very strange issue. I am trying to make a get request to a url using WebClient

WebClient client = new WebClient(); 
client.DownloadString("https://api.test.kount.net/rpc/v1/orders/detail.xml");

It throws following exception.

System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: The decryption operation failed, see inner exception. ---> 

System.ComponentModel.Win32Exception: The message received was unexpected or badly formatted --- End of inner exception stack trace --- at System.Net.Security._SslStream.ProcessReadErrorCode(SecurityStatus errorCode, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest, 

Byte[] extraBuffer) at System.Net.Security._SslStream.ProcessFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)

But if I open this url in browser, it opens and return a xml response. What am I missing? Any ideas?

Try adding a client certificate like so: http://stackoverflow.com/questions/2066489/how-can-you-add-a-certificate-to-webclient-c — Emile Pels, Jul 25 '15 at 17:37
Just use a different browser (other than the one you logged in previously ), and you'll get 401-Unauthorized. — EZI, Jul 25 '15 at 17:46
@EZI I tried other browsers too, I get this xml response failure 0 1 401 Authentication Failure 404 Missing or invalid input — sanjeev, Jul 25 '15 at 17:56
Yes, it returns an error (401) and the xml you posted. So what? — EZI, Jul 25 '15 at 17:58
It doesn't return this xml from c# codes, it throws web exception. — sanjeev, Jul 25 '15 at 18:06
@sanjeev is your question: "how can I get this error message" ? — EZI, Jul 25 '15 at 18:09

EZI · Accepted Answer · 2015-07-25T18:18:21.860

3

Right. I want to get this error message.

Catch the exception and read the content.

var responseStr = "";
try
{
    WebClient client = new WebClient();
    responseStr = client.DownloadString("https://api.test.kount.net/rpc/v1/orders/detail.xml");
}catch(WebException wex)
{
    responseStr = new StreamReader(wex.Response.GetResponseStream()).ReadToEnd();
}

One more alternative

HttpClient httpClient = new HttpClient();
var resp = await httpClient.GetAsync("https://api.test.kount.net/rpc/v1/orders/detail.xml");
var status = resp.StatusCode;
responseStr =  await resp.Content.ReadAsStringAsync();

All of them works...

edited Jul 25 '15 at 18:18

answered Jul 25 '15 at 18:10

EZI

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@sanjeev I tested it again. it returns that xml. – EZI Jul 25 '15 at 18:15
FYI: if I access this url using curl command, it returns me valid xml response. Issue is only when I access it via c# codes. – sanjeev Jul 25 '15 at 18:16
@sanjeev FYI: I get this error messages in many different ways ( in c#). all works. – EZI Jul 25 '15 at 18:17
Very strange. Believe me wex.Response is null for my case. Any ideas why? – sanjeev Jul 25 '15 at 18:18
I asked my client to test my codes from their machine and it worked. I don't the reason why it doesn't work from my machine. Thanks for your help. I'll mark it as answer. – sanjeev Jul 25 '15 at 18:47

Get request to a url throws exception using Webclient but works fine if open it in browser

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