[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: ASN.1
Julian Reschke wrote: > > > And fourth, DER and BER are examples of a philosophy of protocol > > development that's been largely discredited for mainstream applications: > > "bitstuffing". ... > > Many folk think DER/BER should be the first to be > > put against the wall when the revolution (XML?) comes; they're > > that unpleasant to use. > > ... > > I would be extremely careful with this. There will always be a reason to > stick as much as data as possible into a your byte stream. Right now people > pay a premium in both performance and price for IP over cell phones, That isn't "mainstream", either in quantity or bitrate (14.4Kb). Consider, though: the DER encoding of 32 bit numbers takes more than 32 bits. One aspect of "bitstuffing" the DER/BER way is what one might call "The Joy of BitFields" -- used all over the place to flag and tag data. In this case, bitstuffed != space-efficient. Note that I wasn't advocating _wasting_ bandwidth. There are systems where bandwidth is a critical resource ... and it's never completely free, so it shouldn't be wasted. That's not the same as designing a protocol down at the bit level. - Dave xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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