download.py 文件源码

def send(self, request, stream=None, timeout=None, verify=None, cert=None,
             proxies=None):
        parsed_url = urlparse.urlparse(request.url)

        # We only work for requests with a host of localhost
        if parsed_url.netloc.lower() != "localhost":
            raise InvalidURL("Invalid URL %r: Only localhost is allowed" %
                request.url)

        real_url = urlparse.urlunparse(parsed_url[:1] + ("",) + parsed_url[2:])
        pathname = url_to_path(real_url)

        resp = Response()
        resp.status_code = 200
        resp.url = real_url

        stats = os.stat(pathname)
        modified = email.utils.formatdate(stats.st_mtime, usegmt=True)
        resp.headers = CaseInsensitiveDict({
            "Content-Type": mimetypes.guess_type(pathname)[0] or "text/plain",
            "Content-Length": stats.st_size,
            "Last-Modified": modified,
        })

        resp.raw = LocalFSResponse(open(pathname, "rb"))
        resp.close = resp.raw.close

        return resp