Receiving large files with @tornado.web.stream_request_body

Nagy László Zsolt gandalf at
Wed Sep 24 16:31:28 CEST 2014

> class PostFilesHandler(tornado.web.RequestHandler):
>     def post(self):
>         for postfile in self.request.files:
>                 print("File info:",postfile) # There is no 
> postfile["body"] here!!!
>     def prepare(self):
>         self.temp_file = tempfile.NamedTemporaryFile(delete=False)
>     def data_received(self, chunk):
>         self.temp_file.write(chunk) # This is great but which file is 
> this???
I have found out that the raw post data is stored there. Extracting file 
contents from that raw file is possible. However, the provisional 
email.contentmanager class does not provide methods for extracting 
streams from a mime message. Which is bad, because nobody wants to load 
a huge mime message into memory (for example, a DVD iso file...)

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