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Use of Link rel+type for application discovery

From: Eran Hammer-Lahav <eran@hueniverse.com>
Date: Thu, 22 Jan 2009 00:43:13 -0700
To: "ietf-http-wg@w3.org Group" <ietf-http-wg@w3.org>
Message-ID: <90C41DD21FB7C64BB94121FBBC2E7234127C86A2D4@P3PW5EX1MB01.EX1.SECURESERVER.NET>

In Link headers / elements, the 'rel' attribute defines the relationship and the 'type' attribute provides a hint regarding the content type of the destination resource. Is it correct to assume that while 'type' does not define a relationship (as in, 'image/*' means 'my pictures'), applications may require that both the 'rel' and 'type' attribute carry a certain value when used.

In other words, is it valid to say "look for a link with rel='a' and type='b' and only if both found, do something"?

I assume yes, but want to make sure this does not violate anyone's view on the use of 'type' in a MUST match criteria.

Received on Thursday, 22 January 2009 07:43:58 UTC

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