Re: HL7 Standards Process (was RE: EDIINT and HIPAA)

[Terry Harding <tharding@xxxxxxxxxxxxxxxxxxx>]

> Terry,
>
> > The packaging remains the same for either transport and returned MDNs
> > also follow the same format, transport independant.
>
> I don't mean to nit-pick but I don't believe this is accurate. Didn't the
> AS2 testers discover a problem with the To and From headers that are used
in
> AS1, that resulted in a "packaging change" to use AS2-To and AS2-From
within
> AS2. IMO, this means that AS1 and AS2 use DIFFERENT packaging, not hugely
> different, but different. Would you agree?
Dick, you are not nit-picking....
Yes, you are correct with the header issue. But lets look at the creation of
a
multipart/signed message.

Step 1:
Place payload inside a MIME body part
Step 2:
Place bodypart inside a S/MIME multipart/signed construct
Step 3:
Add transport dependant headers

So during the creation of a message, I perform steps 1 and 2 the same way
for either AS1 or AS2.  Next i add the top level transport headers for SMTP
or HTTP and send the message.

The headers you referred to are actually top level transport specific
headers.
When i made the statement about the packaging being the same regardless of
transport, i am referring to the actual MIME construct of the message.
Transport
specfic headers will vary from transport to transport. AS2 added
AS2-To and AS2-From to the top level headers, but i still packaged
the payload the same way.

Terry Harding
Cyclone Commerce