Check if header has already been set

hexojs · Jun 4, 2018 · bd4108e · bd4108e
1 parent 92338ec
commit bd4108e
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/middlewares/route.js b/lib/middlewares/route.js
@@ -30,7 +30,10 @@ module.exports = function(app) {
       return;
     }
 
-    res.setHeader('Content-Type', extname ? mime.lookup(extname) : 'application/octet-stream');
+    // Do not overwrite header if already set by another middleware
+    if (!res.getHeader('Content-Type') {
+        res.setHeader('Content-Type', extname ? mime.lookup(extname) : 'application/octet-stream');
+    }
 
     if (method === 'GET') {
       data.pipe(res).on('error', next);