Why packet header sent by Openkore is different from cilent?

[forbbs]

I'm in a private server,Openkore works fine.I noticed the header of pakcet send to server by openkore is different from real client.For example:the "sync" packet,openkore send "035F" to server,but real client exe send "3366" to server.They all works.
If I changed openkore source to send " 3366" sync packet header instead,it will cause server disconnecting.
Can someone explain it for me?Thank you very much.

[4epT]

"3366" - is encrypted packet. Are you sure that the client sends it?

[forbbs]

Seems all packet data sent by kore except header is same as client.

here is the SocketSniff capture 'sync' log:
openkore:

Send: Return Code: 0x00000000
00000000 5F 03 9F 6D B8 00 _..m..


Return Code: 0x00000000
00000000 7F 00 C0 05 F3 EA .....

real client:

Send: Return Code: 0x00000000
00000000 66 33 FA 60 02 00 f3.`..


Receive: Return Code: 0x00000000
00000000 7F 00 8B 87 ED EA .....

[4epT]

bot does not work on your server?

[forbbs]

It does work,just I wonder why