namespace System.Net.WebSockets { public enum WebSocketCloseStatus { Empty = 1005, EndpointUnavailable = 1001, InternalServerError = 1011, InvalidMessageType = 1003, InvalidPayloadData = 1007, MandatoryExtension = 1010, MessageTooBig = 1009, NormalClosure = 1000, PolicyViolation = 1008, ProtocolError = 1002 } }