BNETDocs 
| Message Id: | 0x66 |
|---|---|
| Message Name: | SID_FRIENDSUPDATE |
| Direction: | Client to Server |
| Used By: | Starcraft Original, Starcraft Broodwar Warcraft III Reign of Chaos, Warcraft III The Frozen Throne |
| Format: | |
This message requests an update on a specific user on the friends list. Battle.net should reply immediately with the same packet (see related).
The first friend is Entry number 0.
Works for all clients, however D2DV/D2XP will not receive friend updates automatically. For those clients, you must request the list at your own intervals if you wish to know about any updates.