Hello. The nontransparentized type proxy server is built and used with two-step composition in Squid (squid 2.5-stable) now. Although I wants to use service called BITS of Microsoft Corp., it is in the situation which can perform only a part of file downloads. The following information was acquired when investigated at the Microsoft Corp. site. Although I wants to solve a problem by change of a setup, is it possible sure enough? ==================================== Server supports the HTTP/1.1 protocol. For downloads, the HTTP server's Head method must return the file size and its Get method must support the Content-Range and Content-Length headers. As a result, BITS only transfers static file content and generates an error if you try to transfer dynamic content, unless the ASP, ISAPI, or CGI script supports the Content-Range and Content-Length headers. BITS can use an HTTP/1.0 server as long as it meets the Head and Get method requirements. To support downloading ranges of a file, the server must support the following requirements: Allow MIME headers to include the standard Content-Range and Content-Type headers, plus a maximum of 180 bytes of other headers. Allow a maximum of two CR/LFs between the HTTP headers and the first boundary string. ==================================== Hiroaki Mori hiro@xxxxxxxxxx