multipart-image.py

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# A request handler that serves a multipart image.

import os

BOUNDARY = b'cutHere'

def create_part(path):

    with open(path, u'rb') as f:

        return b'Content-Type: image/png\r\n\r\n' + f.read() + b'--%s' % BOUNDARY

def main(request, response):

    content_type = b'multipart/x-mixed-replace; boundary=%s' % BOUNDARY

    headers = [(b'Content-Type', content_type)]

    if b'approvecors' in request.GET:

        headers.append((b'Access-Control-Allow-Origin', b'*'))

    image_path = os.path.join(request.doc_root, u'images')

    body = create_part(os.path.join(image_path, u'red.png'))

    body = body + create_part(os.path.join(image_path, u'red-16x16.png'))

    return headers, body