Fixes #256

Author: PawelSuwinski

lib/processMultipart.js

@@ -57,6 +57,16 @@ module.exports = (options, req, res, next) => {
     } = options.useTempFiles
       ? tempFileHandler(options, field, filename) // Upload into temporary file.
       : memHandler(options, field, filename);     // Upload into RAM.
+
+    const writePromise = getWritePromise();
+    if (options.useTempFiles) {
+      writePromise.catch(err => {
+        uploadTimer.clear();
+        cleanup();
+        next(err);
+      });
+    }
+
     // Define upload timer.
     const uploadTimer = new UploadTimer(options.uploadTimeout, () => {
       file.removeAllListeners('data');
@@ -114,7 +124,7 @@ module.exports = (options, req, res, next) => {
       if (!req[waitFlushProperty]) {
         req[waitFlushProperty] = [];
       }
-      req[waitFlushProperty].push(getWritePromise());
+      req[waitFlushProperty].push(writePromise);
     });
 
     file.on('error', (err) => {