Method onClose

java/lib/src/main/java/io/github/ccxt/Exchange.java:1767–1771

(Client client, Object error)

    }

    public void onClose(Client client, Object error) {
        if (!client.error) {
            this.cleanupWsClient(client, error);
        }
    }

    public void onError(Client client, Object error) {
        this.cleanupWsClient(client, error);