I am trying to create xConnect contact from console application by using xConnect API.I have downloaded the code from url https://github.com/jst-cyr/xConnectTutorial and trying to add the contact to sitecore 9 instance but it is throwing the following error at InitializeAsync method
An error occurred while sending the request. ---> System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host at System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult)