Re: [hybi] Proposal for a clean way to detect non-HTTP compliant transparent proxies

"Roy T. Fielding" <fielding@gbiv.com> Thu, 22 July 2010 01:02 UTC

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From: "Roy T. Fielding" <fielding@gbiv.com>
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Date: Wed, 21 Jul 2010 18:02:48 -0700
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To: Jamie Lokier <jamie@shareable.org>
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Subject: Re: [hybi] Proposal for a clean way to detect non-HTTP compliant transparent proxies
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One cannot send the Upgrade header field without also
sending "Connection: Upgrade".

   The Upgrade header field only applies to the immediate connection.
   Therefore, the upgrade keyword MUST be supplied within a Connection
   header field whenever Upgrade is present in an
   HTTP/1.1 message.

....Roy