1 files changed, 18 insertions, 7 deletions
diff --git a/lib/dolce-v2/sync-service.ts b/lib/dolce-v2/sync-service.ts
index ea56b239..7f866955 100644
--- a/lib/dolce-v2/sync-service.ts
+++ b/lib/dolce-v2/sync-service.ts
@@ -1,6 +1,9 @@
 "use server";
 
 import fs from "fs/promises";
+import { createReadStream, createWriteStream } from "fs";
+import { Readable } from "stream";
+import { pipeline } from "stream/promises";
 import path from "path";
 import { v4 as uuidv4 } from "uuid";
 import db from "@/db/db";
@@ -41,11 +44,15 @@ async function ensureUploadDir() {
 async function saveFileToLocal(file: File): Promise<SavedFile> {
   await ensureUploadDir();
   
-  const buffer = Buffer.from(await file.arrayBuffer());
   const uniqueName = `${uuidv4()}_${file.name}`;
   const localPath = path.join(LOCAL_UPLOAD_DIR, uniqueName);
   
-  await fs.writeFile(localPath, buffer);
+  // Stream: Web Stream (file.stream()) -> Node Writable Stream (fs.createWriteStream)
+  // Readable.fromWeb requires Node 18+
+  const readable = Readable.fromWeb(file.stream() as any);
+  const writable = createWriteStream(localPath);
+
+  await pipeline(readable, writable);
   
   return {
     originalName: file.name,
@@ -254,16 +261,20 @@ async function uploadLocalFiles(uploadId: string, userId: string, files: SavedFi
     const file = files[i];
     const fileId = uuidv4();
     
-    // 로컬 파일 읽기
-    const fileBuffer = await fs.readFile(file.localPath);
+    // 로컬 파일 읽기 (Stream)
+    const fileStream = createReadStream(file.localPath);
     
     // 업로드 API 호출
     const uploadUrl = `${DOLCE_API_URL}/PWPUploadService.ashx?UploadId=${uploadId}&FileId=${fileId}`;
     const uploadResponse = await fetch(uploadUrl, {
         method: "POST",
-        headers: { "Content-Type": "application/octet-stream" },
-        body: fileBuffer,
-    });
+        headers: { 
+            "Content-Type": "application/octet-stream",
+            "Content-Length": file.size.toString()
+        },
+        body: fileStream as any, // Node stream as body
+        duplex: "half", // Required for Node streams
+    } as RequestInit & { duplex?: string });
 
     if (!uploadResponse.ok) throw new Error(`File upload failed: ${uploadResponse.status}`);