from wsgiref.util import setup_testing_defaults
from wsgiref.simple_server import make_server


def simple_app(environ, start_response):
    setup_testing_defaults(environ)

    status = "200 OK"
    headers = [("Content-type", "text/plain; charset=utf-8")]

    start_response(status, headers)

    ret = [("%s: %s\n" % (key, value)).encode("utf-8") for key, value in environ.items()]
    return ret


if __name__ == "__main__":
    with make_server("", 8001, simple_app) as httpd:
        httpd.handle_request()