def get_content_length(environ):
    """Returns the content length from the WSGI environment as
    integer. If it's not available or chunked transfer encoding is used,
    ``None`` is returned.

    .. versionadded:: 0.9

    :param environ: the WSGI environ to fetch the content length from.
    """
    if environ.get("HTTP_TRANSFER_ENCODING", "") == "chunked":
        return None

    content_length = environ.get("CONTENT_LENGTH")
    if content_length is not None:
        try:
            return max(0, int(content_length))
        except (ValueError, TypeError):
            pass
Returns the content length from the WSGI environment as
    integer. If it's not available or chunked transfer encoding is used,
    ``None`` is returned.

    .. versionadded:: 0.9

    :param environ: the WSGI environ to fetch the content length from.
    
Solutions/CyberArkAudit/Data Connectors/.python_packages/lib/site-packages/azure/functions/_thirdparty/werkzeug/wsgi.py