Update: AOL has informed me that TOC2 protocol has been shut off. AIM will be removed from Monal.
https://twitter.com/AOLSupportHelp/status/230038754788777984
It appears that AOL has ended support for the TOC2 protocol that Monal and many other clients use to connect to AIM service. I am going to try to contact AOL about this. I have not had any luck getting AIM to work and it certainly looks like the server has been taken offline.
Technical stuff below.
Toc2 is the successor to the TOC protocol which stands for talk to oscar, oscar being the main closed source protocol. Toc was the open protocol that allowed 3rd party clients on the AIM network but had less features. This was why AIM in monal didnt have buddy icons. I used TOC because it was well documented and easy to write from scratch. I do not have time to figure out the much more complicated Oscar.
When connecting to TOc2 i have tried two possible servers, neither work. I believe it is dead.
Becoming Active
2012-07-27 20:36:53.832 Monal[798:3e03] -[AIMTOC2 connect] [Line 857] stream created to server: toc.oscar.aol.com port: 9898
2012-07-27 20:36:53.835 Monal[798:3e03] -[AIMTOC2 connect] [Line 877] Connected to host
2012-07-27 20:36:53.855 Monal[798:c07] -[buddylist viewDidAppear:] [Line 735] buddy list ddid appear
2012-07-27 20:36:53.856 Monal[798:440f] -[AIMTOC2 initilize] [Line 926] beginning login procedures
2012-07-27 20:36:53.877 Monal[798:440f] -[AIMTOC2 talk:] [Line 650] ostream ok..
2012-07-27 20:36:53.878 Monal[798:440f] -[AIMTOC2 talk:] [Line 656] sending: FLAPON
second try:
Becoming Active
2012-07-27 20:34:31.828 Monal[767:3d07] -[AIMTOC2 connect] [Line 857] stream created to server: aimexpress.oscar.aol.com port: 9898
2012-07-27 20:34:31.829 Monal[767:3d07] -[AIMTOC2 connect] [Line 877] Connected to host
2012-07-27 20:34:31.834 Monal[767:c07] -[buddylist viewDidAppear:] [Line 735] buddy list ddid appear
2012-07-27 20:34:31.837 Monal[767:4903] -[AIMTOC2 initilize] [Line 926] beginning login procedures2012-07-27 20:34:31.838 Monal[767:4903] -[AIMTOC2 talk:] [Line 650] ostream ok..
2012-07-27 20:34:31.838 Monal[767:4903] -[AIMTOC2 talk:] [Line 656] sending: FLAPON