support US

README.md

@@ -354,6 +354,17 @@ binance.UseTestnet = true
 client := binance.NewClient(apiKey, secretKey)
 ```
 
+Use the `binance.UseUSDomain` flag to switch domain to binance.us, including both client creation and the wesockets methods.
+```go
+import (
+    "github.com/adshao/go-binance/v2"
+)
+
+binance.UseUSDomain = true
+client := binance.NewClient(apiKey, secretKey)
+```
+
+
 #### Futures (usd(s)-m futures)
 
 Use the `futures.UseTestnet` flag before calling the client creation and the websockets methods

v2/client.go

@@ -125,6 +125,7 @@ type FuturesAlgoOrderStatusType string
 // Endpoints
 var (
 	BaseAPIMainURL    = "https://api.binance.com"
+	BaseAPIMainUSURL  = "https://api.binance.us"
 	BaseAPITestnetURL = "https://testnet.binance.vision"
 )
 
@@ -134,6 +135,9 @@ type SelfTradePreventionMode string
 // UseTestnet switch all the API endpoints from production to the testnet
 var UseTestnet = false
 
+// UseUSDomain switch all the API endpoints from production to the binance.us
+var UseUSDomain = false
+
 // Global enums
 const (
 	SideTypeBuy  SideType = "BUY"
@@ -345,6 +349,9 @@ func getAPIEndpoint() string {
 	if UseTestnet {
 		return BaseAPITestnetURL
 	}
+	if UseUSDomain {
+		return BaseAPIMainUSURL
+	}
 	return BaseAPIMainURL
 }
 

v2/futures/websocket_service.go

@@ -34,6 +34,11 @@ var (
 	ProxyUrl                            = ""
 )
 
+// UseUSDomain switch all the WS streams from production to the binance.us
+// currently future websocket streams are not supported on US domain, so this is set to constantly false
+const UseUSDomain = false
+
+
 func getWsProxyUrl() *string {
 	if ProxyUrl == "" {
 		return nil

v2/options/websocket_service.go

@@ -27,6 +27,10 @@ var (
 	ProxyUrl = ""
 )
 
+// UseUSDomain switch all the WS streams from production to the binance.us
+// currently option websocket streams are not supported on US domain, so this is set to constantly false
+const UseUSDomain = false
+
 // getWsEndpoint return the base endpoint of the WS according the UseTestnet flag
 func getWsEndpoint() string {
 	if UseTestnet {

v2/websocket_service.go

@@ -12,10 +12,13 @@ import (
 var (
 	// Endpoints
 	BaseWsMainURL          = "wss://stream.binance.com:9443/ws"
+	BaseUSWsMainURL          = "wss://stream.binance.us:9443/ws"
 	BaseWsTestnetURL       = "wss://testnet.binance.vision/ws"
 	BaseCombinedMainURL    = "wss://stream.binance.com:9443/stream?streams="
+	BaseUSCombinedMainURL    = "wss://stream.binance.us:9443/stream?streams="
 	BaseCombinedTestnetURL = "wss://testnet.binance.vision/stream?streams="
 	BaseWsApiMainURL       = "wss://ws-api.binance.com:443/ws-api/v3"
+	BaseUSWsApiMainURL       = "wss://ws-api.binance.us:443/ws-api/v3"
 	BaseWsApiTestnetURL    = "wss://testnet.binance.vision/ws-api/v3"
 
 	// WebsocketTimeout is an interval for sending ping/pong messages if WebsocketKeepalive is enabled
@@ -45,6 +48,9 @@ func getWsEndpoint() string {
 	if UseTestnet {
 		return BaseWsTestnetURL
 	}
+	if UseUSDomain {
+		return BaseUSWsMainURL
+	}
 	return BaseWsMainURL
 }
 
@@ -53,6 +59,9 @@ func getCombinedEndpoint() string {
 	if UseTestnet {
 		return BaseCombinedTestnetURL
 	}
+	if UseUSDomain {
+		return BaseUSCombinedMainURL
+	}
 	return BaseCombinedMainURL
 }
 
@@ -876,5 +885,8 @@ func getWsApiEndpoint() string {
 	if UseTestnet {
 		return BaseWsApiTestnetURL
 	}
+	if UseUSDomain {
+		return BaseUSWsApiMainURL
+	}
 	return BaseWsApiMainURL
 }