RE: [squid-users] Squid sqeeze http 100 Continue messages ?

Henrik,

I came across this email in the archive.

I appreciate that squid is not supposed to be HTTP/1.1 compatible but I
was wondering if you knew what would be involved in adding support for
this message?

Would you be able to tell me where I should start looking if I was to
try and add support for it myself?

Thanks for any help you can give!

Graeme

-----Original Message-----
From: Henrik Nordstrom [mailto:hno@squid-cache.org]
Sent: 05 August 2005 11:38
To: Jean Ressouche
Cc: Squid Users
Subject: Re: [squid-users] Squid sqeeze http 100 Continue messages ?

On Mon, 1 Aug 2005, Jean Ressouche wrote:

> i try to use some application through squid, but some of them bug a
little
> bit ...
> i've catch the tcp packet, and see a difference between direct connect
packet
> and thruough squid packets ...
> the server side reply like "HTTP/1.1 100 Continue" is missing (i think
i need
> them for my application)...

Squid is HTTP/1.0.

"HTTP/1.1 100 Continue" requires HTTP/1.1.

From the HTTP/1.1 RFC 2616 regarding this situation:

    Because of the presence of older implementations, the protocol
allows
    ambiguous situations in which a client may send "Expect: 100-
    continue" without receiving either a 417 (Expectation Failed) status
    or a 100 (Continue) status. Therefore, when a client sends this
    header field to an origin server (possibly via a proxy) from which
it
    has never seen a 100 (Continue) status, the client SHOULD NOT wait
    for an indefinite period before sending the request body.

But it would probably be a good idea to extend Squid to immediately
respond with 417 if a request with "Expect: 100-continue" is seen to
allow
the client to recover in a timely fashion. Please file an enhancement
request for this in out bug reporting tool
http://www.squid-cache.org/bugs/ and I'll send you a patch (patch
already
prepared, but squid-users is not the correct forum for patches)

Regards
Henrik

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Received on Tue Aug 30 2005 - 04:46:49 MDT