[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: xml over http - RFC 3023
> It's generally just much easier for people to put the encoding > directly in the document (or entity), in which case any external > content-type can and should be ignored. No. The XML REC is very explicit that if the encoding is specified in both places the external specification should be used and the encoding declaration ignored. The thinking is/was that this allows proxies and mail gateways and things to reencode documents witout having to go in and edit the document, however it's a real pain because in many scenarios it is so much easier to get the ecoding right in the file, than it is to get it right on the server. xml 1.0 5th edn, ehich has just come out has made many incompatible changes, but it hasn't changed this, it still defers the question of whether external or internal encoding is authorative to the respective mime type registration, which is (now) 3023 which says http://www.ietf.org/rfc/rfc3023.txt There are several reasons that the charset parameter is authoritative. First, some MIME processing engines do transcoding of MIME bodies of the top-level media type "text" without reference to any of the internal content. Thus, it is possible that some agent might change text/xml; charset="iso-2022-jp" to text/xml; charset="utf-8" without modifying the encoding declaration of an XML document. David ________________________________________________________________________ The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is: Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom. This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. ________________________________________________________________________
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