Return the absolute URL without query string for the given WSGI
    environment.

def get_request_url(environ):
    # type: (Dict[str, str]) -> str
    """Return the absolute URL without query string for the given WSGI
    environment."""
    return "%s://%s/%s" % (
        environ.get("wsgi.url_scheme"),
        get_host(environ),
        wsgi_decoding_dance(environ.get("PATH_INFO") or "").lstrip("/"),
    )