diff --git a/v2/futures/client.go b/v2/futures/client.go
index 664ea664..126a116f 100644
--- a/v2/futures/client.go
+++ b/v2/futures/client.go
@@ -74,9 +74,9 @@ type UserDataEventReasonType string
 type ForceOrderCloseType string
 
 // Endpoints
-const (
-	baseApiMainUrl    = "https://fapi.binance.com"
-	baseApiTestnetUrl = "https://testnet.binancefuture.com"
+var (
+	BaseApiMainUrl    = "https://fapi.binance.com"
+	BaseApiTestnetUrl = "https://testnet.binancefuture.com"
 )
 
 // Global enums
@@ -207,9 +207,9 @@ func newJSON(data []byte) (j *simplejson.Json, err error) {
 // getApiEndpoint return the base endpoint of the WS according the UseTestnet flag
 func getApiEndpoint() string {
 	if UseTestnet {
-		return baseApiTestnetUrl
+		return BaseApiTestnetUrl
 	}
-	return baseApiMainUrl
+	return BaseApiMainUrl
 }
 
 // NewClient initialize an API client instance with API key and secret key.
diff --git a/v2/futures/client_ws.go b/v2/futures/client_ws.go
index 6e894eab..9a93268c 100644
--- a/v2/futures/client_ws.go
+++ b/v2/futures/client_ws.go
@@ -28,9 +28,6 @@ const (
 )
 
 var (
-	// ErrorWsConnectionClosed defines that connection closed
-	ErrorWsConnectionClosed = errors.New("ws error: connection closed")
-
 	// ErrorWsReadConnectionTimeout defines that connection read timeout expired
 	ErrorWsReadConnectionTimeout = errors.New("ws error: read connection timeout")
 
@@ -58,7 +55,7 @@ type ClientWs struct {
 	requestsList                RequestList
 	readC                       chan []byte
 	readErrChan                 chan error
-	reconnectCount              atomic.Int64
+	reconnectCount              int64
 }
 
 func (c *ClientWs) debug(format string, v ...interface{}) {
@@ -203,7 +200,7 @@ func (c *ClientWs) read() {
 		if err != nil {
 			c.debug("read: error reading message '%v'", err)
 			c.reconnectSignal <- struct{}{}
-			c.readErrChan <- errors.Join(err, ErrorWsConnectionClosed)
+			c.readErrChan <- err
 
 			c.debug("read: wait to get connected")
 			<-c.connectionEstablishedSignal
@@ -290,7 +287,7 @@ func (c *ClientWs) handleReconnect() {
 // startReconnect starts reconnect loop with increasing delay
 func (c *ClientWs) startReconnect(b *backoff.Backoff) *connection {
 	for {
-		c.reconnectCount.Add(1)
+		atomic.AddInt64(&c.reconnectCount, 1)
 		conn, err := newConnection()
 		if err != nil {
 			delay := b.Duration()
@@ -304,9 +301,7 @@ func (c *ClientWs) startReconnect(b *backoff.Backoff) *connection {
 }
 
 // GetReconnectCount returns reconnect counter value
-func (c *ClientWs) GetReconnectCount() int64 {
-	return c.reconnectCount.Load()
-}
+func (c *ClientWs) GetReconnectCount() int64 { return atomic.LoadInt64(&c.reconnectCount) }
 
 // NewRequestList creates request list
 func NewRequestList() RequestList {
diff --git a/v2/futures/websocket_service.go b/v2/futures/websocket_service.go
index 38a7fdf8..a8704742 100644
--- a/v2/futures/websocket_service.go
+++ b/v2/futures/websocket_service.go
@@ -4,10 +4,10 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"github.com/bitly/go-simplejson"
+	"github.com/gorilla/websocket"
 	"strings"
 	"time"
-	"github.com/gorilla/websocket"
-	"github.com/bitly/go-simplejson"
 )
 
 // Endpoints
diff --git a/v2/options/websocket_service.go b/v2/options/websocket_service.go
index 75cc3fc7..2c80cdcd 100644
--- a/v2/options/websocket_service.go
+++ b/v2/options/websocket_service.go
@@ -490,13 +490,19 @@ func WsDepthServe(symbol string, levels string, rate *time.Duration, handler WsD
 // reference: https://binance-docs.github.io/apidocs/voptions/en/#websocket-market-streams
 //
 // streamName: you should collaborate stream names through official documentation or other function above defined,
-// 				the legitimacy of parameters needs to be guaranteed by the caller
+//
+//	the legitimacy of parameters needs to be guaranteed by the caller
+//
 // handler: a map of handler function, its key needs to correspond to the handler of the incoming streamname,
-// 			handler's key should be in ["trade", "index", "markPrice", "kline", "ticker", "openInterest", "option_pair", "depth"]
+//
+//	handler's key should be in ["trade", "index", "markPrice", "kline", "ticker", "openInterest", "option_pair", "depth"]
+//
 // for example:
-// 			WsCombinedServe({"ETH-240927-5500-P@depth10"}, map[string]interface{}{"depth": func(*WsDepthEvent) {}}, func(error){})
-//			WsCombinedServe({"ETH-240927-5500-P@depth10", "ETH-240927-5500-P@kline_1m"},
-// 						    map[string]interface{}{"depth": func(*WsDepthEvent) {}, "kline": func(*WsKlineEvent){}}, func(error){})
+//
+//	WsCombinedServe({"ETH-240927-5500-P@depth10"}, map[string]interface{}{"depth": func(*WsDepthEvent) {}}, func(error){})
+//	WsCombinedServe({"ETH-240927-5500-P@depth10", "ETH-240927-5500-P@kline_1m"},
+//				    map[string]interface{}{"depth": func(*WsDepthEvent) {}, "kline": func(*WsKlineEvent){}}, func(error){})
+//
 // note: the symbol(underlying) of streamName should be upper.
 func WsCombinedServe(streamName []string, handler map[string]interface{}, errHandler ErrHandler) (doneC, stopC chan struct{}, err error) {
 	if len(streamName) <= 0 || len(handler) <= 0 {