Request failed: System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest) at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest) at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest) at System.Net.TlsStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead) --- End of inner exception stack trace --- at System.Net.HttpWebRequest.GetResponse() at Cobalt.Infrastructure.HttpClient.SystemNet.HttpWebRequestWrapper.GetResponse() in D:\a\tr-application-management_HttpClient\tr-application-management_HttpClient\Cobalt.Infrastructure.HttpClient\SystemNet\HttpWebRequestWrapper.cs:line 150 at Cobalt.Infrastructure.HttpClient.SystemNet.SystemNetHttpClientImpl.RetrieveNetworkResponse(IHttpMethod httpMethod, IHttpRequestWrapper httpWebRequest, IStaticContentCache staticContentCache) in D:\a\tr-application-management_HttpClient\tr-application-management_HttpClient\Cobalt.Infrastructure.HttpClient\SystemNet\SystemNetHttpClientImpl.cs:line 240 Request URI: https://onepassservicesprod.int.westlaw.com/onepass/v3/sponsor/validate Request Method: POST