ServerWebSocket.close

Closes the connection.

Here is a list of close codes:

• 1000 means "normal closure" (default)
• 1009 means a message was too big and was rejected
• 1011 means the server encountered an error
• 1012 means the server is restarting
• 1013 means the server is too busy or the client is rate-limited
• 4000 through 4999 are reserved for applications (you can use it!)

To close the connection abruptly, use terminate().