BNETDocs
C>S 0x2F SID_FINDLADDERUSER
Message Id:0x2F
Message Name:SID_FINDLADDERUSER
Direction:Client to Server
Used By:Starcraft Japanese, Starcraft Broodwar
Starcraft Shareware, Starcraft Original
Warcraft II BNE
Format:

(UINT32) Product ID
(UINT32) League
(UINT32) Sort method
(STRING) Username 

Remarks

Requests a user's status on ladder.

League is 1 for Ladder, 3 for Iron Man.

Sort methods:
0x00: Highest Rating
0x01: Fastest Climbers (Unused)
0x02: Most Wins
0x03: Most Games Played
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