feat: 支持对Stream通道标识本地局域网IP，用于问题诊断

Signed-off-by: Ke Jie <chzealot@gmail.com>

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 {

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",
 	}
 }
 

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

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")
+}

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)
+}