System 4.0.0.0 System.Enum To be added. Contains the list of possible WebSocket errors. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates that the connection was terminated unexpectedly. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates a general error. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates an error occurred when parsing the HTTP headers during the opening handshake. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates that a WebSocket frame with an unknown opcode was received. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates the WebSocket is an invalid state for the given operation (such as being closed or aborted). Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates that an unknown native error occurred. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates that the incoming request was not a valid websocket request. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates that there was no native error information for the exception. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates that the client requested an unsupported WebSocket subprotocol. Field 4.0.0.0 System.Net.WebSockets.WebSocketError Indicates that the client requested an unsupported version of the WebSocket protocol.