diff --git a/client/client.go b/client/client.go
index d3f93e0..f57a529 100644
--- a/client/client.go
+++ b/client/client.go
@@ -273,6 +273,9 @@ func (cli *StreamClient) GetConnectionEndpoint(ctx context.Context) (*payload.Co
 		UserAgent:     cli.UserAgent.UserAgent,
 		Subscriptions: make([]*payload.SubscriptionModel, 0),
 	}
+	if localIp, err := utils.GetFirstLanIP(); err == nil {
+		requestModel.LocalIP = localIp
+	}
 
 	for ttype, subs := range cli.subscriptions {
 		for ttopic, _ := range subs {
diff --git a/client/config.go b/client/config.go
index 4949948..829a129 100644
--- a/client/config.go
+++ b/client/config.go
@@ -41,7 +41,7 @@ type UserAgentConfig struct {
 
 func NewDingtalkGoSDKUserAgent() *UserAgentConfig {
 	return &UserAgentConfig{
-		UserAgent: "dingtalk-sdk-go/v0.2.0",
+		UserAgent: "dingtalk-sdk-go/v0.3.0",
 	}
 }
 
diff --git a/payload/connection.go b/payload/connection.go
index de20f28..ff73113 100644
--- a/payload/connection.go
+++ b/payload/connection.go
@@ -18,6 +18,7 @@ type ConnectionEndpointRequest struct {
 	ClientSecret  string               `json:"clientSecret"` //自建应用appSecret; 三方应用suiteSecret
 	Subscriptions []*SubscriptionModel `json:"subscriptions"`
 	UserAgent     string               `json:"ua"`
+	LocalIP       string               `json:"localIp"`
 }
 
 // 长连接接入点参数
diff --git a/utils/net.go b/utils/net.go
new file mode 100644
index 0000000..69e261e
--- /dev/null
+++ b/utils/net.go
@@ -0,0 +1,25 @@
+package utils
+
+import (
+	"errors"
+	"net"
+)
+
+func GetFirstLanIP() (string, error) {
+	addresses, err := net.InterfaceAddrs()
+	if err != nil {
+		return "", err
+	}
+	if len(addresses) == 0 {
+		return "", errors.New("empty interfaces")
+	}
+
+	for _, addr := range addresses {
+		if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
+			if ipnet.IP.To4() != nil {
+				return ipnet.IP.String(), nil
+			}
+		}
+	}
+	return "", errors.New("no valid interfaces")
+}
diff --git a/utils/net_test.go b/utils/net_test.go
new file mode 100644
index 0000000..1bb5d6a
--- /dev/null
+++ b/utils/net_test.go
@@ -0,0 +1,12 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestGetFirstLanIP(t *testing.T) {
+	ip, err := GetFirstLanIP()
+	assert.Nil(t, err)
+	assert.NotEmpty(t, ip)
+}