Downloading large files with Zuul

I am facing the problem of downloading large files via zuul. I am using apache-commons file upload ( https://commons.apache.org/proper/commons-fileupload/ ) to stream large files and also use zuul on the front. In my Spring Boot application, I have disabled the boot provided by Spring to use the application from Apache Commons:

  spring:
      http:
          multipart:
              enabled: false

      

        
        
        
      

    

The controller looks like this:

public ResponseEntity insertFile(@PathVariable Long profileId, 
    HttpServletRequest request) throws Exception {
    ServletFileUpload upload = new ServletFileUpload();
    FileItemIterator uploadItemIterator = upload.getItemIterator(request);
    if (!uploadItemIterator.hasNext()) {
        throw new FileUploadException("FileItemIterator was empty"); 
    } 
    while (uploadItemIterator.hasNext()) {
        FileItemStream fileItemStream = uploadItemIterator.next();
        if (fileItemStream.isFormField()) {
            continue; 
        } 
       //do stuff 
    } 
    return new ResponseEntity(HttpStatus.OK);
} 

      

        
        
        
      

    

If I access my app directly (without zuul) the file upload works as intended. However, if accessed through zuul, the FileItemIterator has no items to traverse and the request immediately fails (ERR_CONNECTION_RESET). For zuul, I also disabled the multipart given by Spring. Otherwise it works. However, files are not streamed. They are fully loaded and only after I get inside the controller (normal Spring behavior). Is there a way to use apache-commons streaming options with zuul?