_cperror.py 文件源码

def clean_headers(status):
    """Remove any headers which should not apply to an error response."""
    import cherrypy

    response = cherrypy.serving.response

    # Remove headers which applied to the original content,
    # but do not apply to the error page.
    respheaders = response.headers
    for key in ["Accept-Ranges", "Age", "ETag", "Location", "Retry-After",
                "Vary", "Content-Encoding", "Content-Length", "Expires",
                "Content-Location", "Content-MD5", "Last-Modified"]:
        if key in respheaders:
            del respheaders[key]

    if status != 416:
        # A server sending a response with status code 416 (Requested
        # range not satisfiable) SHOULD include a Content-Range field
        # with a byte-range-resp-spec of "*". The instance-length
        # specifies the current length of the selected resource.
        # A response with status code 206 (Partial Content) MUST NOT
        # include a Content-Range field with a byte-range- resp-spec of "*".
        if "Content-Range" in respheaders:
            del respheaders["Content-Range"]