[JDEV] Why XML?
ssg at aggressor.net
Wed Jan 13 06:05:56 CST 1999
>It's probably important to measure things before guessing, otherwise you
>end up doing the equivalent of optimizing the system idle loop.
I meant if we can make things faster even a bit without giving out the
flexibility away why won't we? :)
As I know in ICQ v2 protocol an online alert (packet sent from server to
client) is a UDP packet only 10 bytes long (with the advantage of using UINs
of course). In Jabber I can hardly guess but probably would be much longer
than that. Think you have a list of four thousand people in your roster then
measure it :)
>Yes. No. Yes, the parsing might be a little slower, but no, that will not
>to make coding harder. You just grab a standard parsing library and hook it
>Look into the SAX interface for Java for an example.
What if I'm coding in Delphi? :) (I'm currently coding in Delphi in fact
ehhee). And are the standard libs suitable for network-kind of parsing?
>Binary??? Ouch. Directly use structs?? Ouch.
That worked for ICQ, why won't it work for us? :)
>Which platform, compiler, packing options??
Packing options what an IP header has :)
>Intel byte-order or Motorolla?
Say Intel. What about ntohs, htons ? :)
>8,16, 32 or 64 bit alignment???
>What if you change your C/C++ code? Break the protocol???
No. Allow the protocol itself to tolerate the changes. That's not that much
>( ever seen the .TGA file format? )
Nope but now I wonder heheh
>Yes, but XML makes the functional aspect of the protocol so much stronger.
>Noticing a missing '>' is far easier than noticing a missing bit. Besides,
>gives you a wealth of tools for viewing the data exchanged, debugging, etc.
I have to admit but if a protocol which makes sense going to be used, then
why a markup language selected for that? A straight text based protocol
(such as POP3, SMTP) could be used. (Then a new code parsing code would be
needed you're right about that one I'm afraid ehhehe)
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