fixed file upload

frontend/src/pages/api/[...path].ts

@@ -4,29 +4,51 @@ export const ALL: APIRoute = async ({ request, params }) => {
   const API_URL = process.env.PUBLIC_API_URL || 'http://backend:3000';
   const path = params.path;
   
+  if (!path) {
+    return new Response(JSON.stringify({ error: 'Missing path' }), { status: 400 });
+  }
+
   const url = new URL(`${API_URL}/api/${path}`);
-  
-  // Forward search parameters
   const requestUrl = new URL(request.url);
   url.search = requestUrl.search;
 
+  // Filter headers to avoid conflicts with the backend container
+  const headers = new Headers();
+  const forbiddenHeaders = ['host', 'connection', 'origin', 'referer', 'content-length'];
+  
+  request.headers.forEach((value, key) => {
+    if (!forbiddenHeaders.includes(key.toLowerCase())) {
+      headers.set(key, value);
+    }
+  });
+
   try {
     const response = await fetch(url.toString(), {
       method: request.method,
-      headers: request.headers,
-      body: request.method !== 'GET' && request.method !== 'HEAD' ? await request.arrayBuffer() : undefined,
-      // @ts-ignore
+      headers: headers,
+      // Pass the body stream directly for efficiency
+      body: request.method !== 'GET' && request.method !== 'HEAD' ? request.body : undefined,
+      // @ts-ignore - duplex is required for streaming bodies in some fetch implementations
       duplex: 'half'
     });
 
+    // Extract headers for the response
+    const responseHeaders = new Headers();
+    response.headers.forEach((value, key) => {
+      responseHeaders.set(key, value);
+    });
+
     return new Response(response.body, {
       status: response.status,
-      headers: response.headers
+      headers: responseHeaders
     });
   } catch (e) {
-    console.error(`Proxy error for ${url}:`, e);
-    return new Response(JSON.stringify({ error: 'Proxy error' }), {
-      status: 500,
+    console.error(`[Proxy Error] ${request.method} ${url}:`, e);
+    return new Response(JSON.stringify({ 
+      error: 'Proxy connection failed', 
+      details: e instanceof Error ? e.message : String(e) 
+    }), {
+      status: 502,
       headers: { 'Content-Type': 'application/json' }
     });
   }