Difference between revisions of "Protocol:Packet Header"
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(Note about JPv1 and its strange buggy packets.) |
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| − | Different versions of PSO use slightly different formats for the headers on all packets sent to and from the server. PSO versions up to, and including, PSOGC use a 4-byte header, while PSO Blue Burst uses an 8-byte header. All packets | + | Different versions of PSO use slightly different formats for the headers on all packets sent to and from the server. PSO versions up to, and including, PSOGC use a 4-byte header, while PSO Blue Burst uses an 8-byte header. All packets should generally be some multiple of their header in size (since that's how the encryption is dealt with). |
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| + | Note that some versions (namely, Japanese Dreamcast v1) of the game do silly things and send packets that aren't multiples of the header size on some occasions. | ||
==Dreamcast/Gamecube Header Format== | ==Dreamcast/Gamecube Header Format== | ||
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| 0x02-0x03 || Packet Size (Little-Endian) | | 0x02-0x03 || Packet Size (Little-Endian) | ||
|} | |} | ||
| − | |||
==PC Header Format== | ==PC Header Format== | ||
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| 0x03 || Flags | | 0x03 || Flags | ||
|} | |} | ||
| − | |||
==Blue Burst Header Format== | ==Blue Burst Header Format== | ||
Revision as of 06:45, 27 January 2012
Different versions of PSO use slightly different formats for the headers on all packets sent to and from the server. PSO versions up to, and including, PSOGC use a 4-byte header, while PSO Blue Burst uses an 8-byte header. All packets should generally be some multiple of their header in size (since that's how the encryption is dealt with).
Note that some versions (namely, Japanese Dreamcast v1) of the game do silly things and send packets that aren't multiples of the header size on some occasions.
Dreamcast/Gamecube Header Format
| Bytes | Meaning |
|---|---|
| 0x00 | Packet Type |
| 0x01 | Flags |
| 0x02-0x03 | Packet Size (Little-Endian) |
PC Header Format
| Bytes | Meaning |
|---|---|
| 0x00-0x01 | Packet Size (Little-Endian) |
| 0x02 | Packet Type |
| 0x03 | Flags |
Blue Burst Header Format
| Bytes | Meaning |
|---|---|
| 0x00-0x01 | Packet Size (Little-Endian) |
| 0x02-0x03 | Packet Type (Little-Endian) |
| 0x04-0x07 | Flags (Little-Endian) |
