when it need local ip, it will get it every time. We can get local ip once, and reused it.

cluster/cluster_impl/base_cluster_invoker.go

@@ -22,7 +22,6 @@ import (
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 	"go.uber.org/atomic"
 )
@@ -72,7 +71,7 @@ func (invoker *baseClusterInvoker) IsAvailable() bool {
 //check invokers availables
 func (invoker *baseClusterInvoker) checkInvokers(invokers []protocol.Invoker, invocation protocol.Invocation) error {
 	if len(invokers) == 0 {
-		ip, _ := gxnet.GetLocalIP()
+		ip := common.GetLocalIp()
 		return perrors.Errorf("Failed to invoke the method %v. No provider available for the service %v from "+
 			"registry %v on the consumer %v using the dubbo version %v .Please check if the providers have been started and registered.",
 			invocation.MethodName(), invoker.directory.GetUrl().SubURL.Key(), invoker.directory.GetUrl().String(), ip, constant.Version)
@@ -84,7 +83,7 @@ func (invoker *baseClusterInvoker) checkInvokers(invokers []protocol.Invoker, in
 //check cluster invoker is destroyed or not
 func (invoker *baseClusterInvoker) checkWhetherDestroyed() error {
 	if invoker.destroyed.Load() {
-		ip, _ := gxnet.GetLocalIP()
+		ip := common.GetLocalIp()
 		return perrors.Errorf("Rpc cluster invoker for %v on consumer %v use dubbo version %v is now destroyed! can not invoke any more. ",
 			invoker.directory.GetUrl().Service(), ip, constant.Version)
 	}

cluster/cluster_impl/failover_cluster_invoker.go

@@ -20,11 +20,11 @@ package cluster_impl
 import (
 	"context"
 	"fmt"
+	"github.com/apache/dubbo-go/common"
 	"strconv"
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 )
 
@@ -89,7 +89,7 @@ func (invoker *failoverClusterInvoker) Invoke(ctx context.Context, invocation pr
 		return result
 	}
 
-	ip, _ := gxnet.GetLocalIP()
+	ip := common.GetLocalIp()
 	invokerSvc := invoker.GetUrl().Service()
 	invokerUrl := invoker.directory.GetUrl()
 	return &protocol.RPCResult{

cluster/directory/base_directory_test.go

@@ -24,7 +24,6 @@ import (
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -55,7 +54,7 @@ func TestBuildRouterChain(t *testing.T) {
 
 	assert.NotNil(t, directory)
 
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	rule := base64.URLEncoding.EncodeToString([]byte("true => " + " host = " + localIP))
 	routeURL := getRouteURL(rule, anyURL)
 	routeURL.AddParam(constant.INTERFACE_KEY, "mock-app")
@@ -79,7 +78,7 @@ func TestIsProperRouter(t *testing.T) {
 	regURL := url
 	regURL.AddParam(constant.APPLICATION_KEY, "mock-app")
 	d := NewBaseDirectory(&regURL)
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	rule := base64.URLEncoding.EncodeToString([]byte("true => " + " host = " + localIP))
 	routeURL := getRouteURL(rule, anyURL)
 	routeURL.AddParam(constant.APPLICATION_KEY, "mock-app")

cluster/router/condition/factory_test.go

@@ -26,7 +26,6 @@ import (
 )
 
 import (
-	"github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 	"github.com/stretchr/testify/assert"
 )
@@ -164,7 +163,7 @@ func TestRoute_matchWhen(t *testing.T) {
 }
 
 func TestRoute_matchFilter(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	t.Logf("The local ip is %s", localIP)
 	url1, _ := common.NewURL("dubbo://10.20.3.3:20880/com.foo.BarService?default.serialization=fastjson")
 	url2, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
@@ -223,7 +222,7 @@ func TestRoute_methodRoute(t *testing.T) {
 
 func TestRoute_ReturnFalse(t *testing.T) {
 	url, _ := common.NewURL("")
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	invokers := []protocol.Invoker{NewMockInvoker(url, 1), NewMockInvoker(url, 2), NewMockInvoker(url, 3)}
 	inv := &invocation.RPCInvocation{}
 	rule := base64.URLEncoding.EncodeToString([]byte("host = " + localIP + " => false"))
@@ -234,7 +233,7 @@ func TestRoute_ReturnFalse(t *testing.T) {
 }
 
 func TestRoute_ReturnEmpty(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	url, _ := common.NewURL("")
 	invokers := []protocol.Invoker{NewMockInvoker(url, 1), NewMockInvoker(url, 2), NewMockInvoker(url, 3)}
 	inv := &invocation.RPCInvocation{}
@@ -246,7 +245,7 @@ func TestRoute_ReturnEmpty(t *testing.T) {
 }
 
 func TestRoute_ReturnAll(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	urlString := "dubbo://" + localIP + "/com.foo.BarService"
 	dubboURL, _ := common.NewURL(urlString)
 	mockInvoker1 := NewMockInvoker(dubboURL, 1)
@@ -262,7 +261,7 @@ func TestRoute_ReturnAll(t *testing.T) {
 }
 
 func TestRoute_HostFilter(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	url1, _ := common.NewURL(factory333URL)
 	url2, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
 	url3, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
@@ -281,7 +280,7 @@ func TestRoute_HostFilter(t *testing.T) {
 }
 
 func TestRoute_Empty_HostFilter(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	url1, _ := common.NewURL(factory333URL)
 	url2, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
 	url3, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
@@ -300,7 +299,7 @@ func TestRoute_Empty_HostFilter(t *testing.T) {
 }
 
 func TestRoute_False_HostFilter(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	url1, _ := common.NewURL(factory333URL)
 	url2, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
 	url3, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
@@ -319,7 +318,7 @@ func TestRoute_False_HostFilter(t *testing.T) {
 }
 
 func TestRoute_Placeholder(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	url1, _ := common.NewURL(factory333URL)
 	url2, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
 	url3, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
@@ -338,7 +337,7 @@ func TestRoute_Placeholder(t *testing.T) {
 }
 
 func TestRoute_NoForce(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	url1, _ := common.NewURL(factory333URL)
 	url2, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
 	url3, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
@@ -355,7 +354,7 @@ func TestRoute_NoForce(t *testing.T) {
 }
 
 func TestRoute_Force(t *testing.T) {
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 	url1, _ := common.NewURL(factory333URL)
 	url2, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))
 	url3, _ := common.NewURL(fmt.Sprintf(factoryDubboFormat, localIP))

cluster/router/condition/router.go

@@ -25,7 +25,6 @@ import (
 import (
 	"github.com/RoaringBitmap/roaring"
 	"github.com/dubbogo/gost/container/set"
-	"github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 )
 
@@ -184,7 +183,7 @@ func (c *ConditionRouter) Route(invokers *roaring.Bitmap, cache router.Cache, ur
 		return result
 	} else if c.Force {
 		rule, _ := url.GetParamAndDecoded(constant.RULE_KEY)
-		localIP, _ := gxnet.GetLocalIP()
+		localIP := common.GetLocalIp()
 		logger.Warnf("The route result is empty and force execute. consumer: %s, service: %s, router: %s", localIP, url.Service(), rule)
 		return result
 	}

common/host_util.go

@@ -0,0 +1,13 @@
+package common
+
+import gxnet "github.com/dubbogo/gost/net"
+
+var localIp string
+
+func GetLocalIp() string {
+	if len(localIp) != 0 {
+		return localIp
+	}
+	localIp, _ = gxnet.GetLocalIP()
+	return localIp
+}

common/host_util_test.go

@@ -0,0 +1,10 @@
+package common
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestGetLocalIp(t *testing.T) {
+	assert.NotNil(t, GetLocalIp())
+}

config/config_loader.go

@@ -28,7 +28,6 @@ import (
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 )
 
@@ -250,7 +249,7 @@ func createInstance(url common.URL) (registry.ServiceInstance, error) {
 
 	host := url.Ip
 	if len(host) == 0 {
-		host, err = gxnet.GetLocalIP()
+		host = common.GetLocalIp()
 		if err != nil {
 			return nil, perrors.WithMessage(err, "could not get the local Ip")
 		}

config/service_config_test.go

@@ -18,11 +18,11 @@
 package config
 
 import (
+	"github.com/apache/dubbo-go/common"
 	"testing"
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	"github.com/stretchr/testify/assert"
 	"go.uber.org/atomic"
 )
@@ -184,7 +184,7 @@ func TestExport(t *testing.T) {
 func TestGetRandomPort(t *testing.T) {
 	protocolConfigs := make([]*ProtocolConfig, 0, 3)
 
-	ip, err := gxnet.GetLocalIP()
+	ip := common.GetLocalIp()
 	protocolConfigs = append(protocolConfigs, &ProtocolConfig{
 		Ip: ip,
 	})
@@ -194,7 +194,7 @@ func TestGetRandomPort(t *testing.T) {
 	protocolConfigs = append(protocolConfigs, &ProtocolConfig{
 		Ip: ip,
 	})
-	assert.NoError(t, err)
+	//assert.NoError(t, err)
 	ports := getRandomPort(protocolConfigs)
 
 	assert.Equal(t, ports.Len(), len(protocolConfigs))

config_center/configurator/override.go

@@ -23,7 +23,6 @@ import (
 
 import (
 	gxset "github.com/dubbogo/gost/container/set"
-	gxnet "github.com/dubbogo/gost/net"
 )
 
 import (
@@ -61,7 +60,7 @@ func (c *overrideConfigurator) Configure(url *common.URL) {
 		currentSide := url.GetParam(constant.SIDE_KEY, "")
 		configuratorSide := c.configuratorUrl.GetParam(constant.SIDE_KEY, "")
 		if currentSide == configuratorSide && common.DubboRole[common.CONSUMER] == currentSide && c.configuratorUrl.Port == "0" {
-			localIP, _ := gxnet.GetLocalIP()
+			localIP := common.GetLocalIp()
 			c.configureIfMatch(localIP, url)
 		} else if currentSide == configuratorSide && common.DubboRole[common.PROVIDER] == currentSide && c.configuratorUrl.Port == url.Port {
 			c.configureIfMatch(url.Ip, url)
@@ -127,7 +126,7 @@ func (c *overrideConfigurator) configureDeprecated(url *common.URL) {
 		// 1.If it is a consumer ip address, the intention is to control a specific consumer instance, it must takes effect at the consumer side, any provider received this override url should ignore;
 		// 2.If the ip is 0.0.0.0, this override url can be used on consumer, and also can be used on provider
 		if url.GetParam(constant.SIDE_KEY, "") == common.DubboRole[common.CONSUMER] {
-			localIP, _ := gxnet.GetLocalIP()
+			localIP := common.GetLocalIp()
 			c.configureIfMatch(localIP, url)
 		} else {
 			c.configureIfMatch(constant.ANYHOST_VALUE, url)

registry/base_registry.go

@@ -29,7 +29,6 @@ import (
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 )
 
@@ -53,7 +52,7 @@ var (
 
 func init() {
 	processID = fmt.Sprintf("%d", os.Getpid())
-	localIP, _ = gxnet.GetLocalIP()
+	localIP = common.GetLocalIp()
 }
 
 type createPathFunc func(dubboPath string) error

registry/consul/utils.go

@@ -25,7 +25,6 @@ import (
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	consul "github.com/hashicorp/consul/api"
 	perrors "github.com/pkg/errors"
 )
@@ -47,7 +46,7 @@ func buildService(url common.URL) (*consul.AgentServiceRegistration, error) {
 
 	// address
 	if url.Ip == "" {
-		url.Ip, _ = gxnet.GetLocalIP()
+		url.Ip = common.GetLocalIp()
 	}
 
 	// port

registry/directory/directory.go

@@ -25,7 +25,6 @@ import (
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 	"go.uber.org/atomic"
 )
@@ -365,7 +364,7 @@ func (dir *RegistryDirectory) overrideUrl(targetUrl *common.URL) {
 
 func (dir *RegistryDirectory) getConsumerUrl(c *common.URL) *common.URL {
 	processID := fmt.Sprintf("%d", os.Getpid())
-	localIP, _ := gxnet.GetLocalIP()
+	localIP := common.GetLocalIp()
 
 	params := url.Values{}
 	c.RangeParams(func(key, value string) bool {

registry/kubernetes/registry.go

@@ -27,7 +27,6 @@ import (
 
 import (
 	"github.com/apache/dubbo-getty"
-	"github.com/dubbogo/gost/net"
 	perrors "github.com/pkg/errors"
 	v1 "k8s.io/api/core/v1"
 )
@@ -54,7 +53,7 @@ const (
 
 func init() {
 	processID = fmt.Sprintf("%d", os.Getpid())
-	localIP, _ = gxnet.GetLocalIP()
+	localIP = common.GetLocalIp()
 	extension.SetRegistry(Name, newKubernetesRegistry)
 }
 

registry/nacos/registry.go

@@ -26,7 +26,6 @@ import (
 )
 
 import (
-	gxnet "github.com/dubbogo/gost/net"
 	"github.com/nacos-group/nacos-sdk-go/clients"
 	"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
 	nacosConstant "github.com/nacos-group/nacos-sdk-go/common/constant"
@@ -52,7 +51,7 @@ const (
 )
 
 func init() {
-	localIP, _ = gxnet.GetLocalIP()
+	localIP = common.GetLocalIp()
 	extension.SetRegistry(constant.NACOS_KEY, newNacosRegistry)
 }