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The request was aborted: Could not create SSL/TLS secure channel.

Raman2712
Level 1
Level 1

when we call rest api "Https://IPAddress/ers/config/guestuser/"

our code is 

 

String credidentials = ISE_Username + ":" + ISE_Password;
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(destinationUrl);
request.Method = "POST";
request.ContentType = "application/vnd.com.cisco.ise.identity.guestuser.2.0+xml";
request.Accept = "application/vnd.com.cisco.ise.identity.guestuser.2.0+xml";
String authCode = Convert.ToBase64String(Encoding.Default.GetBytes(credidentials));
request.Headers.Add("Authorization", "Basic " + authCode);

byte[] bytes;
bytes = System.Text.Encoding.UTF8.GetBytes(requestXml);
request.ContentLength = bytes.Length;

ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(delegate { return true; });

Stream requestStream = request.GetRequestStream();
requestStream.Write(bytes, 0, bytes.Length);
requestStream.Close();

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode == HttpStatusCode.Created)
{
Stream responseStream = response.GetResponseStream();
String responseStr = new StreamReader(responseStream).ReadToEnd();
// TempData["AccountCreatedMsg"] = true;
return responseStr;
}
else
{
// TempData["AccountCreatedMsg"] = false;
// TempData["ResponseCode"] = response.StatusCode;
}
}
}
catch (System.Exception ex)
{
Common.Log("Error in ISE : Message : " + Convert.ToString(ex.Message));
Common.Log("Error in ISE : Inner Ex : " + Convert.ToString(ex.InnerException));
}

We are getting below error : " The request was aborted: Could not create SSL/TLS secure channel." 

 

Please suggest. 

1 Reply 1

Dennis Mink
VIP Alumni
VIP Alumni

can you capture the transaction using wireshark to see what TLS negotiation takes place?

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