Is there a way to 'clean up' socket connection to avoid memory leaks, before attempting to reconnect?

[tackgyu]

Memory leaks found while connecting to invalid socket server url with native engine.
Specifically, NativeEngine instance count increases in Xcode memory graph whenever I try to reconnect to the socket server with the same url.

var socket: WebSocket?

func connect(url: URL) {
    // Disconnect from previous connection
    // FYI. Memory leak also occurs when calling `socket?.forceDisconnect()`
    socket?.disconnect()

    socket = WebSocket(request: ...)
    ...
}