fix(middleware): avoid manual NextRequest with body for GET/HEAD to resolve failed to pipe response error (160k occurrences)

middleware.ts

@@ -52,16 +52,20 @@ export default async function middleware(request: NextRequest) {
 
     urlObj.protocol = proto;
 
-    effectiveRequest = new NextRequest(urlObj, {
+    // Only create a new request for GET/HEAD to avoid consuming the body stream on POST/PUT
-      headers: request.headers,
+    // This resolves the "failed to pipe response" error (160k occurrences in GlitchTip)
-      method: request.method,
+    if (['GET', 'HEAD'].includes(request.method)) {
-      body: request.body,
+      effectiveRequest = new NextRequest(urlObj, {
-    });
+        headers: request.headers,
+        method: request.method,
+        // No body for GET/HEAD
+      });
 
-    if (process.env.NODE_ENV !== 'production' || !process.env.CI) {
+      if (process.env.NODE_ENV !== 'production' || !process.env.CI) {
-      console.log(
+        console.log(
-        `🛡️ Proxy: Fixed internal URL leak: ${url} -> ${urlObj.toString()} | Proto: ${proto} | Host: ${hostHeader}`,
+          `🛡️ Proxy: Fixed internal URL leak: ${url} -> ${urlObj.toString()} | Proto: ${proto} | Host: ${hostHeader}`,
-      );
+        );
+      }
     }
   }