[squid-users] R: [squid-users] HTTP/1.0 417 Expectation failed

But, if you see RFC2616 for proxy, there is no reference about to consider
proxy server as next hop. RFC 2616 says that proxy forwards request
according to next hop (if next hop is or it's not compliant to HTTP/1.1).
I think proxy, even if it compliants with HTTP/1.0, should have only to
examine the next hop without taking care of itself (that is like http
protocol 1.1 -1.0)
You correct me if I wrong...

Requirements for HTTP/1.1 proxies:

      1- If a proxy receives a request that includes an Expect request-
        header field with the "100-continue" expectation, and the proxy
        either knows that the next-hop server complies with HTTP/1.1 or
        higher, or does not know the HTTP version of the next-hop
        server, it MUST forward the request, including the Expect header
        field.

      2- If the proxy knows that the version of the next-hop server is
        HTTP/1.0 or lower, it MUST NOT forward the request, and it MUST
        respond with a 417 (Expectation Failed) status.

      3- Proxies SHOULD maintain a cache recording the HTTP version
        numbers received from recently-referenced next-hop servers.

      4- A proxy MUST NOT forward a 100 (Continue) response if the
        request message was received from an HTTP/1.0 (or earlier)
        client and did not include an Expect request-header field with
        the "100-continue" expectation. This requirement overrides the
        general rule for forwarding of 1xx responses (see section 10.1)

-----Messaggio originale-----
Da: Henrik Nordström [mailto:henrik_at_henriknordstrom.net]
Inviato: Monday, February 22, 2010 12:37 AM
A: Riccardo Castellani
Cc: Amos Jeffries; squid-users_at_squid-cache.org
Oggetto: Re: [squid-users] HTTP/1.0 417 Expectation failed

sön 2010-02-21 klockan 22:55 +0100 skrev Riccardo Castellani:
> according RFC what's the case for Squid 2.7 about "HTTP/1.0 417
Expectation
> failed", "X-Squid-Error: ERR_INVALID_REQ 0"
>
> A, B, C ,D ?

B, as Squid-2.7 has an internal HTTP/1.0 hop.

Regards
Henrik
Received on Mon Feb 22 2010 - 09:25:55 MST