I use the cryptean's BitcoinLib to make RPC calls to a Bitcoin node on another computer. Seemingly at random, the connection fails and I get a System.Net.Sockets.SocketException with the error code Only one usage of each socket address (protocol/network address/port) is normally permitted. I don't know if this is due to a race condition on the port number distribution on the local machine or a bug in BitcoinLib.

Here is the complete stack trace

• 2018-08-15 08:48:12.5570 Fetching transaction from Bitcoin node, txid=3586d46be7bb1875fede4349849b89daf5ed73320979da211a54146c7bd90bfb.
• 2018-08-15 08:48:12.5831 Failed during communication with Bitcoin node.
• 2018-08-15 08:48:12.5831 An unknown web exception occured while trying to read the JSON response
• 2018-08-15 08:48:12.5831 System.Net.WebException: Only one usage of each socket address (protocol/network address/port) is normally permitted Only one usage of each socket address (protocol/network address/port) is normally permitted ---> System.Net.Http.HttpRequestException: Only one usage of each socket address (protocol/network address/port) is normally permitted ---> System.Net.Sockets.SocketException: Only one usage of each socket address (protocol/network address/port) is normally permitted at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken) --- End of inner exception stack trace --- at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken) at System.Threading.Tasks.ValueTask1.get_Result() at System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken) at System.Threading.Tasks.ValueTask1.get_Result() at System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask 1 creationTask) at System.Threading.Tasks.ValueTask 1.get_Result()
  at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken) at System.Net.Http.AuthenticationHelper.SendWithAuthAsync(HttpRequestMessage request, Uri authUri, ICredentials credentials, Boolean preAuthenticate, Boolean isProxyAuth, Boolean doRequestAuth, HttpConnectionPool pool, CancellationToken cancellationToken) at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts) at System.Net.HttpWebRequest.SendRequest() at System.Net.HttpWebRequest.GetResponse() --- End of inner exception stack trace --- at System.Net.HttpWebRequest.GetResponse() at BitcoinLib.RPC.Connector.RpcConnector.MakeRequest[T](RpcMethods rpcMethod, Object[] parameters)
• 2018-08-15 08:48:12.5831 at BitcoinLib.RPC.Connector.RpcConnector.MakeRequest[T](RpcMethods rpcMethod, Object[] parameters)