S>C 0x18 SID_REGISTRY

Transport Layer:Transmission Control Protocol (TCP)
Application Layer:Battle.net v1 TCP Messages (SID)
Message Id:0x18
Message Name:SID_REGISTRY
Direction:Server to Client
Options: Deprecated
Used By:Starcraft Original
Message Format:
(does not include protocol header)		 
(UINT32) Cookie
(UINT32) HKEY
(STRING) Registry path
(STRING) Registry key

Remarks

Battle.net requests data from the Windows Registry using this message. This message is no longer used by Battle.net.

The Client should respond with C>S 0x18 SID_REGISTRY.

HKEY is the registry key root. The values are standard:

HKEY Value Name
0x80000000 HKEY_CLASSES_ROOT
0x80000001 HKEY_CURRENT_USER
0x80000002 HKEY_LOCAL_MACHINE
0x80000003 HKEY_USERS
0x80000004 HKEY_PERFORMANCE_DATA
0x80000005 HKEY_CURRENT_CONFIG
0x80000006 HKEY_DYN_DATA
| Edited: Leaky

Comments

xboi209

Blizzard sent this packet for a total of 7 days to collect email addresses from users who failed the CD key check during the connection process.

Below are some links I found referencing this situation:

All links have been saved to the Wayback Machine.

If anyone finds any additional information about this, please post it here.