Optional ReadonlycleanOptional ReadonlydecodeOptional ReadonlyencodeOptional ReadonlyencodeSent as a single JSON text frame immediately after the socket opens, for servers that expect an explicit subscribe message instead of (or in addition to) URL query parameters. The default transport never sends a subscribe frame on its own.
Optional ReadonlyprotocolsReadonlyurlOptional Readonlyweb
WebSocket close codes treated as a normal, non-reconnectable end of the stream rather than a
transport-gapfailure.