ZPublisher filestream_iterator example

gistfile1.py

import os
import stat

from ZPublisher.Iterators import filestream_iterator
from zope.publisher.browser import BrowserPage


class FilestreamPage(BrowserPage):

    target = '/path/to/some/file'

    def __call__(self):
        size = os.stat(self.target)[stat.ST_SIZE]
        self.request.response.setHeader('Content-type',
            'application/octet-stream')
        self.request.response.setHeader('Content-length', int(size))
        return filestream_iterator(self.target, 'rb')