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OSCAR. "Open
System for Communication
in Realtime" - the internal project name
(as opposed to the external marketing name) used to identify Instant Messenger
protocol.
Protocol described in this documentation set used in ICQ and AIM. ICQ was bought
by AOL and after that they initiate merging these services. ICQ client start using
OSCAR protocol and ICQ clone developers named this protocol as v7. I think
this is wrong because this number used to identify direct connection protocol
version. As I said before, client-server protocol name is "OSCAR" and there is
no v7, v8, and v9. AOL programmers just added family 0x15 for compatibility with
old ICQ server database engine and begin use uins as screennames.
I tried to gather as more details about OSCAR as possible. This
documentation set was written for both AIM and ICQ IM services. Here is the
list of links to information with short descriptions:
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| [Basic] |
Protocol basic info. FLAP/SNAC/TLV formats, etc |
| [Login] |
Detailed authorization, login and services setup description |
| [Snaclist] |
List of known services and their SNACs with links to detailed info |
| [Sequences] |
Information about various packet sequences (e.g. search) |
| [Misc] |
User classes, status types, message types, message flags, etc... |
| [Changes] |
Changes that was made in these docs. |
| [Credits] |
List of the people who helps me with these docs |
| [Terms] |
Protocol specification terminology |
| [Wanted] |
List of unknown SNACs I looking info for |
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Disclaimer: This documentation set and the author are in no way affiliated with
Mirabilis (AOL). No reverse engineering or decompilation of any AOL/ICQ
code took place to make this documentation. AIM is a registered trademark of
America Online, Inc. ICQ is a registered trademark of ICQ Inc.
Attention: This is not official OSCAR specification - USE IT AT YOUR OWN
RISK. I don't earn money for this work, I'm only have some fun. Please do not
send me a letters like "This is all shit. Goodbye", but feel free to tell me
about missing info and about bugs.
You always can find fresh copy of this documentation set at website
http://iserverd.khstu.ru/oscar/.
Please, please, please, if you have protocol information not listed here or you found a bug in
documentation (protocol bug, syntax/grammar error or obfuscated info)
send it to me with "oscar_info"
string in subject field or you can send it to
icq-devel mailing list.
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