세션 IP 표시와 로그아웃 처리 보강

backend/internal/middleware/audit_middleware.go

@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"log/slog"
 	"reflect"
-	"strings"
 	"sync"
 	"time"
 
@@ -217,16 +216,5 @@ func AuditMiddleware(config AuditConfig) fiber.Handler {
 }
 
 func extractClientIP(c *fiber.Ctx) string {
-	if forwarded := c.Get("X-Forwarded-For"); forwarded != "" {
-		parts := strings.Split(forwarded, ",")
-		if len(parts) > 0 {
-			if ip := strings.TrimSpace(parts[0]); ip != "" {
-				return ip
-			}
-		}
-	}
-	if realIP := strings.TrimSpace(c.Get("X-Real-IP")); realIP != "" {
-		return realIP
-	}
-	return c.IP()
+	return utils.ResolveClientIP(c.Get("X-Forwarded-For"), c.Get("X-Real-IP"), c.IP())
 }