추가

backend/utils/ip.ts

@@ -0,0 +1,33 @@
+import type { H3Event } from 'h3'
+
+/**
+ * 클라이언트 IP 주소 가져오기
+ */
+export function getClientIp(event: H3Event): string {
+  // 프록시/로드밸런서 뒤에 있을 경우
+  const xForwardedFor = getHeader(event, 'x-forwarded-for')
+  if (xForwardedFor) {
+    return xForwardedFor.split(',')[0].trim()
+  }
+  
+  const xRealIp = getHeader(event, 'x-real-ip')
+  if (xRealIp) {
+    return xRealIp
+  }
+  
+  // 직접 연결
+  const remoteAddress = event.node.req.socket?.remoteAddress
+  if (remoteAddress) {
+    // IPv6 localhost를 IPv4로 변환
+    if (remoteAddress === '::1' || remoteAddress === '::ffff:127.0.0.1') {
+      return '127.0.0.1'
+    }
+    // IPv6 매핑된 IPv4 주소 처리
+    if (remoteAddress.startsWith('::ffff:')) {
+      return remoteAddress.substring(7)
+    }
+    return remoteAddress
+  }
+  
+  return 'unknown'
+}