openshift - container ssl request error - HttpClient XML - docker

Question

I try to send data to soap api .
In My development computer , there is no problem . I can take the response (before docker build).
Again in My computer , there is no problem in with docker run command. I can take the response.
But when I pull the run this container in openshift server , I can not take the response.
The error message is :
"The SSL connection could not be established, see inner exception.
---##--- System.IO.IOException: Unable to read data from the transport connection: Connection reset by peer.\n --->
System.Net.Sockets.SocketException (104): Connection reset by peer\n
--- End of inner exception stack trace ---\n at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError
error, CancellationToken cancellationToken)\n at
System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.GetResult(Int16
token)\n at
System.Net.Security.SslStream.g__InternalFillHandshakeBufferAsync|182_0[TIOAdapter](TIOAdapter
adap, ValueTask`1 task, Int32 minSize)\n at
System.Net.Security.SslStream.ReceiveBlobAsync[TIOAdapter](TIOAdapter
adapter)\n at
System.Net.Security.SslStream.ForceAuthenticationAsync[TIOAdapter](TIOAdapter
adapter, Boolean receiveFirst, Byte[] reAuthenticationData, Boolean
isApm)\n at
System.Net.Http.ConnectHelper.EstablishSslConnectionAsyncCore(Boolean
async, Stream stream, SslClientAuthenticationOptions sslOptions,
CancellationToken cancellationToken)"
My code :
HttpClientHandler clientHandler = new HttpClientHandler();
clientHandler.ServerCertificateCustomValidationCallback =
(sender,cert, chain, sslPolicyErrors) => { return true; };
HttpClient client = new HttpClient(clientHandler);
var stringContent = new StringContent(postData, encoding, "application/xml");
var response = await client.PostAsync(_Host,stringContent);