Hi Everyone,
The very first draft of a proposed specification for HL7 over HTTP has been
posted here:
http://hl7api.sourceforge.net/hapi-hl7overhttp/specification.html
The spec as it stands incorporates most of the feedback I received on
Blogspot and on the HAPI mailing list, so it's probably time to start
getting feedback on how that all looks on paper.
Some areas I'm particularly interested on opinions on:
- For the internet protocol crowd: Is it really wise to specify that
only the parts of RFC 2616 which are explicitly referenced in HoH are
required to be supported? My hope is that this leads to an easier to
implement spec (since features like redirect, multipart content,
cache-control, etc. are not relevant to transactional system-to-system
messaging). My fear is that we'll miss something critical (my first attempt
skipped the "Host" header, which I then learned is an absolute must
according to HTTP/1.1)
- For the security crowd: Is SHA512 with RSA a good signature algorithm
for message non-repudiation? At a glance it seems like it might be too
java-centric. (Would a CMS signature be better? A CMS signed message?)
I've also got a reference implementation started, with the hope that it
will be usable in a wide variety of circumstances (e.g. servlet, standalone
application, drop-in LLP implementation) and even in applications that
don't otherwise use HAPI in order to encourage adoption. More to come on
that, but please get in touch if you would like to get involved.
Cheers,
James
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