api handlers to register and unregister host from turn,added dockerfile

turnserver/internal/utils/utils.go

@@ -0,0 +1,46 @@
+package utils
+
+import (
+	"errors"
+	"io"
+	"net/http"
+	"time"
+)
+
+// GetPublicIP - gets public ip
+func GetPublicIP() (string, error) {
+
+	iplist := []string{"https://ip.client.gravitl.com", "https://ifconfig.me", "https://api.ipify.org", "https://ipinfo.io/ip"}
+
+	//for network, ipService := range global_settings.PublicIPServices {
+	//logger.Log(3, "User provided public IP service defined for network", network, "is", ipService)
+
+	// prepend the user-specified service so it's checked first
+	//		iplist = append([]string{ipService}, iplist...)
+	//}
+
+	endpoint := ""
+	var err error
+	for _, ipserver := range iplist {
+		client := &http.Client{
+			Timeout: time.Second * 10,
+		}
+		resp, err := client.Get(ipserver)
+		if err != nil {
+			continue
+		}
+		defer resp.Body.Close()
+		if resp.StatusCode == http.StatusOK {
+			bodyBytes, err := io.ReadAll(resp.Body)
+			if err != nil {
+				continue
+			}
+			endpoint = string(bodyBytes)
+			break
+		}
+	}
+	if err == nil && endpoint == "" {
+		err = errors.New("public address not found")
+	}
+	return endpoint, err
+}