Function cdn_validation

pywebio/platform/utils.py:12–30

CDN availability check :param bool/str cdn: cdn parameter :param level: warn or error :param stacklevel: stacklevel=3 to makes the warning refer to cdn_validation() caller’s caller

(cdn, level='warn', stacklevel=3)

def cdn_validation(cdn, level='warn', stacklevel=3):
    """CDN availability check

    :param bool/str cdn: cdn parameter
    :param level: warn or error
    :param stacklevel: stacklevel=3 to makes the warning refer to cdn_validation() caller’s caller
    """
    assert level in ('warn', 'error')

    if cdn is True and 'dev' in version:
        if level == 'warn':
            import warnings
            warnings.warn("Default CDN is not supported in dev version. Ignore the CDN setting", PyWebIOWarning,
                          stacklevel=stacklevel)
            return False
        else:
            raise ValueError("Default CDN is not supported in dev version. Please host static files by yourself.")

    return cdn


class OriginChecker: