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Generate Code: All packets

Packet Information

Message ID:0x25
Message Name:SID_PING
Direction:Server -> Client (Received)
Used By:Starcraft Shareware, Starcraft Broodwar, Diablo Shareware, Diablo II, Warcraft II, Warcraft III: The Frozen Throne, Starcraft, Starcraft Japanese, Diablo, Diablo, Warcraft III
Format:(DWORD) Ping Value
Remarks:Used to calculate Client's ping. The received DWORD should be sent directly back to

The ping displayed when in chat can be artificially inflated by delaying before sending this packet, or deflated by responding before requested.
Ping can be set to -1 (Strictly speaking, 0xFFFFFFFF, since ping is unsigned) by not responding to this packet at all.

The received DWORD is not what determines your ping, but it is actually a cookie for the server. You should never change the DWORD.
Related:[0x25] SID_PING (C->S)

User Comments

For detailed questions and discussion, visit the Research Forum

Feb 25, 2009
11:16 PM

On Starcraft Broodwar, I theorize that this is sent by the server if you never send any data back to when expects you to. How I theorize this? I debugged Starcraft, and made it 'Pause'. I resumed it and had sent SID_PING multiple times. It never sent SID_PING ever again until I paused for about 10-20 seconds then resumed.

If you do not send any data back to after a certain period of time, but knows you WERE sending data, will send this packet to you.

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