#
# This file is part of gunicorn released under the MIT license.
# See the NOTICE for more information.


import sys
import time

class TestIter:

    def __iter__(self):
        lines = [b'line 1\n', b'line 2\n']
        for line in lines:
            yield line
            time.sleep(20)

def app(environ, start_response):
    """Application which cooperatively pauses 20 seconds (needed to surpass normal timeouts) before responding"""
    status = '200 OK'
    response_headers = [
        ('Content-type', 'text/plain'),
        ('Transfer-Encoding', "chunked"),
    ]
    sys.stdout.write('request received')
    sys.stdout.flush()
    start_response(status, response_headers)
    return TestIter()