AOL Instant Messenger Reference Handout

Oscar Protocol

FLAP

SNAC

Data Field

Typical Signon Process

Client connects to TOC
Client sends "FLAPON\r\n\r\n"
TOC sends Client FLAP SIGNON
Client sends TOC FLAP SIGNON
Client sends TOC toc_signon message
If login fails, TOC drops client's connection,
else TOC sends client SIGN_ON reply
If Client doesn't support version, it drops the connection

Optional:

TOC sends Client CONFIG

Client sends TOC permit/deny stuff

Client sends TOC toc_add_buddy message