The SSL connection could not be established

Question

I am using a third party library (Splunk c# SDK ) in my ASP.NET core application. I am trying to connect to my localhost Splunk service via this SDK, but I get an exception saying:

System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.

And The inner exception says:

The remote certificate is invalid according to the validation procedure.

This SDK uses HTTP client under the hood, but I don't have access to this object to configure HttpClientHandler.

All my search on google ends up using ServicePointManager to bypass the SSL validation, but this solution doesn't work in Asp.Net core.

ServicePointManager.ServerCertificateValidationCallback = delegate { return true; }; 

Is there any way to bypass this validation in asp.Net core?

Answer 1

Yes, you can Bypass the certificate using below code...

HttpClientHandler clientHandler = new HttpClientHandler(); clientHandler.ServerCertificateCustomValidationCallback = (sender, cert, chain, sslPolicyErrors) => { return true; };  // Pass the handler to httpclient(from you are calling api) HttpClient client = new HttpClient(clientHandler); 

Answer 2

As I worked with the identity server (.net core) and a web api (.net core) on my developer machine, I realized, that I need to trust the ssl certification of localhost. That command does the job for me:

dotnet dev-certs https --trust