Types

0

1

2

3

1000, Normal closure; the connection successfully completed whatever purpose for which it was created.

1001, The endpoint is going away, either because of a server failure or because the browser is navigating away from the page that opened the connection.

1002, The endpoint is terminating the connection due to a protocol error.

1003, The connection is being terminated because the endpoint received data of a type it cannot accept (for example, a textonly endpoint received binary data).

1005, Reserved. Indicates that no status code was provided even though one was expected.

1006, Reserved. Used to indicate that a connection was closed abnormally (that is, with no close frame being sent) when a status code is expected.

1007, The endpoint is terminating the connection because a message was received that contained inconsistent data (e.g., nonUTF8 data within a text message).

1008, The endpoint is terminating the connection because it received a message that violates its policy. This is a generic status code, used when codes 1003 and 1009 are not suitable.

1009, The endpoint is terminating the connection because a data frame was received that is too large.

1010, The client is terminating the connection because it expected the server to negotiate one or more extension, but the server didn't.

1011, The server is terminating the connection because it encountered an unexpected condition that prevented it from fulfilling the request.

1012, The server is terminating the connection because it is restarting.

1013, The server is terminating the connection due to a temporary condition, e.g. it is overloaded and is casting off some of its clients.

1015, Reserved. Indicates that the connection was closed due to a failure to perform a TLS handshake (e.g., the server certificate can't be verified).

OtherCode that is reserved and not in the range 0999