AFAIK, it is just a Netscape hack. Too bad it never worked properly and has problems inherent in the very way it was defined. On Mon, 25 Jan 1999, Drazen Kacar wrote: > Could someone tell me where is Proxy-Connection header defined? It doesn't > appear in RFC 1945, nor in RFC 2068, nor in draft-ietf-http-v11-spec-rev-06.