Merge pull request #169 from DataAction/issue-168-connection-state

Reset connection state to closed if unable to connect to server.

Author: senseibaka

src/AdoNetCore.AseClient/AseConnection.cs

@@ -270,11 +270,19 @@ public override void Open()
 
             InternalState = ConnectionState.Connecting;
 
-            var parameters = ConnectionParameters.Parse(_connectionString);
+            try
+            {
+                var parameters = ConnectionParameters.Parse(_connectionString);
 
-            _internal = _connectionPoolManager.Reserve(_connectionString, parameters, _eventNotifier);
+                _internal = _connectionPoolManager.Reserve(_connectionString, parameters, _eventNotifier);
 
-            InternalConnectionTimeout = parameters.LoginTimeout;
+                InternalConnectionTimeout = parameters.LoginTimeout;
+            }
+            catch (Exception)
+            {
+                InternalState = ConnectionState.Closed;
+                throw;
+            }
 
             InternalState = ConnectionState.Open;
         }