textfiles/bbs/FIDONET/JENNINGS/STANDARDS/zone.TXT

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#24 06 Oct 89 13:34:24 [1] (PRIVATE) (KILL/SENT) $0.22
From: Tom Jennings, 1:125/111
To: Doug Thompson, 1:163/162, <ISIS HQ (II), Ottawa ON
Subj: Re: re: Fido 12 commercial version
The INTL line is really the messages address fields. The ones in the .MSG
header are inadequate -- no zone fields. So FIdo fully addresses every
message. Others insist it is not necesarry. I insist it is. Here's why:
If you or I genreate a mesage that is inter-zone, once delivered it is
intra-zone! And in transit along the way its status varies.
The logic used is this: I generate a full INTL address every time. If the
destinaztion zone != my zone, then I use the IFNA Kludge logic to set the
.MSG file headers address to myzone/destzone, ie. the zone gate. That system
is supposed to know how to handle INTL lines.
The above was two years ago, it was ssumed correctly that existing programs
couldnt handle INTL lines, hence the split addresses. The zone gate at that
time was presumed to be some "magical" box that would transform the .MSG
header addresses, and cross the zone boundary, using information NOT
CONTAINED IN THE MESSAGE! It would "know" that (for instance) Zone 2 was at
some particular phone number, etc.
More[Y,n,c] c
Well, Fido, and presumably others, use the INTL line as the "real" address.
Fido reads the .MSG header first to build an address for that message, then
checks for the INTL line; if it exists, that is used for the source/dest
addresses. This is done at the lowest possible level so that three level
addresses are an integral part of Fido's addressing scheme. YOu can
file-attach or file-request from any node to any node, interzone or
intrazone. There is no special cases when crossing zones, just like there are
none when crossing nets. (Imagine the clamor you'd generate if you insisted
on "net gates" or other nonsense!)
I am not sure if I fully understand your thread scheme. It probably doesnt
matter at this point. I will do customization to Fido for a fee anyways, as
long as it doesnt impact basic design criteria, and that sounds like it
doesnt. We can talk about this later. Send me a copy in writing so's I can
pore over it and I'll give a better guess.
Quantity arrangements and all that
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