Try to connect until mdf_consume returns -1 or the ConnectionTimeout …

…has expired.

Source/Millistream.Streaming/DataFeed.cs

@@ -234,7 +234,7 @@ public bool Connect(string host, string username, string password)
                                 }
                             }
                             break;
-                        default:
+                        case -1:
                             return false;
                     }
                 } while (DateTime.UtcNow.Subtract(startTime).TotalSeconds < connectionTimeout);