Method futuresBookTickerStream

src/node-binance-api.ts:5788–5795

* Futures WebSocket bookTicker * @param {symbol} symbol name or false. can also be a callback * @param {function} callback - callback function * @return {string} the websocket endpoint

(symbol?: string, callback = console.log)

     * @return {string} the websocket endpoint
     */
    futuresBookTickerStream(symbol?: string, callback = console.log) {
        const reconnect = () => {
            if (this.Options.reconnect) this.futuresBookTickerStream(symbol, callback);
        };
        const endpoint = symbol ? `${symbol.toLowerCase()}@bookTicker` : '!bookTicker';
        const subscription = this.futuresSubscribeSingle(endpoint, data => callback(this.fBookTickerConvertData(data)), { reconnect });
        return (subscription as any).url;
    }

    /**
     * Websocket futures klines