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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: URIs harmful
I've often heard that HTTP URIs are URLs because they include a string which is a DNS name. This isn't exactly true. It contains a string which is the authority, and the *resolution mechanism* maps that to DNS. If the HTTP URI scheme were designed such that the authority was just a string like "microsoft", then that would work just as well as long as the resolution mechanism knew to stick "www." on the front, and ".com" at the end before looking up the DNS record. This is no different than "urn:microsoft". DDDS, or any other URI resolution mechanism, in order to function as a trustworthy dereferencing system in which Microsoft gets a say in what is returned, *MUST* somehow turn "microsoft" into some pointer to a piece of Microsoft-controlled information. This can either be a registry in which MS has exclusive write access, or an IP address to a Microsoft machine. What this means, is that as soon as DDDS is deployed, URNs will become URLs. That's why I prefer the term "URI", so we can talk about the identifying properties of UR* independant of other transient properties. MB -- Mark Baker, CTO, Idokorro Mobile (formerly Planetfred) Ottawa, Ontario, CANADA. distobj@a... http://www.markbaker.ca http://www.idokorro.com
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