Hi, Henrik From: Henrik Nordstrom <henrik@xxxxxxxxxxxxxxxxxxx> Subject: Re: About squid ICAP implementation Date: Tue, 18 Nov 2008 09:34:51 +0100 > On lör, 2008-11-15 at 05:51 +0900, Takashi Tochihara wrote: > > > I think to send "Allow: 204" & Preview: , squid must buffer not the > > whole message, but the whole *Previewed* message. (part of the message) > > "Allow: 204" is not related to previews. It tells the ICAP server that > it's OK to respond with 204 at any time, even outside of the preview. > > The preview is signalled by the "Preview: nnnn" header, and implicitly > requests the ICAP server to respond with 204 or 100 at the end of the > preview to continue the transaction or possibly a syntesised response > replacing the original message. You are right. In case of the client sends Preview & Allow: 204, the servier first responds "100 Continue" and next (as a result) responds "204 No Content", squid must buffer the whole message. I understand what you said. Thank you! best regards, -- Takashi Tochihara