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