Packets ID Finding

[KagefumiMerry]

Market related packets (ID 0x2D)
Market Item List packets
(0x2D, 0x03) Maybe each item for 132 bytes (NGS) or 128 bytes (classic one)
0x0 owner player ID?
0x1C item main category id
0x1E item sub category id
0x22 item id
(These could be referee on https://github.com/CRC32EX/PSO2Data/blob/master/items.csv )
0x74 No. of items
0x78 selling price

Market Item shop owner?
(0x2D, 0x0C)

[AntonnMal]

Added those packets (50c3266). Also it seems that 0x34 is also related to the market. Maybe only for top sellers, etc, I'm not sure on that.

[KagefumiMerry]

Additional to Login packets [0x11] list:
[0x11 0xE1] seems is the packets contain the ICE files while login.

the LoadItemAttributes [Id(0x0F, 0x00)] packets when login, could be combined to single large ICE file (item_parameter), however i am still not sure how to process the file to id list
https://raw.githubusercontent.com/CRC32EX/PSO2Data/master/items.csv

(I just see that Lapig : "i think thats probably the same data as whats in the 11e1 packets the other ice data u get wen u login" )

Did the packet format like the LoadItemPacket [Id(0x0F, 0x30)] so we could get the ItemId directly and map to item name?

For Player Spawn packet [Id(0x08, 0x04)]:
packetdata[4] == 0x4 (thus id like 0x04, 0x08, 0x04, 0x00 ) indicate the player is in NGS block
the size of Spawn packet in NGS is not fixed, so need to do pattern check or other ways to identify the information

Staring from 0x60 with each 0x30 (48bytes) block to check pattern with the same start (0x0-0x2) and end with 0x4 (at 0x25)
the "start" of each block should be like 7000 (00 00 58 1B), 5000 (00 00 88 13), 4000(00 00 A0 00)

After 0x14 bytes after these repeated blocks, arksCharacterName and
arksCharacterName + 0x20 -> arkslook (768bytes)
arkslook + 0x610 ( or 0x60C before 20231011 update) ->arksUserName

Here is my current findings.

Not sure it is useful or not but since there is no good place to put these information (even in PSO2mod-discord).

[AntonnMal]

the LoadItemAttributes [Id(0x0F, 0x00)] packets when login, could be combined to single large ICE file (item_parameter), however i am still not sure how to process the file to id list

I have some information about how to parse it in classic (structure). NGS as far as i know is similar, it just has some extra fields in some objects.

For Player Spawn packet [Id(0x08, 0x04)]:
packetdata[4] == 0x4 (thus id like 0x04, 0x08, 0x04, 0x00 ) indicate the player is in NGS block

This is very annoying (it's not hard to implement, but I'd rather not). Sometime later I think I'll look into that.

Not sure it is useful or not but since there is no good place to put these information (even in PSO2mod-discord).

That's fine, this repo is also for documenting the protocol, feel free to post your finding here.

[KagefumiMerry]

the LoadItemAttributes [Id(0x0F, 0x00)] packets when login, could be combined to single large ICE file (item_parameter), however i am still not sure how to process the file to id list

I have some information about how to parse it in classic (structure). NGS as far as i know is similar, it just has some extra fields in some objects.

I try to get updated with current NGS item_attrs, but since I have no too much Rust background to understand the Procedural Macros , thus I try it by hand in Hex-editor.

In 202403 JP updates, NGS version item_parameter.bin maybe like this (guessing but not verify every entry, maybe completely wrong):
the number of the items seems changed to uint32

The classic seems have another item_parameter.bin while login, and also I need a way to get the items name from packets (did the id 0x31 should be the name list? as [Id(0x31, 0x05)] contain the achievement titles )..

Also id[0x40, 0x2A] should be the friends related list (online list?)...

No	Items	bytes_of_each_item	start_pos
1	4691	60	20	WeaponAttrs
2	5226	36	281484	HumanCostume
3	1001	32	469624	CastPart
4	55624	40	501660	Consumable? [Ba] etc.
5	533	96	2726624
6	765	72	2777796	units
7	1238	84	2832880	camouflage
8	3	20	2936876	Time-Limited Enhancement Data??
9	123	64	2936940	Eggs
10	474	52	2944816
11	8	20	2969468	Bonus Key
12	236	52	2969632
13	52	112	2981908
14	106	128	2987736	Skill Ring
15	357	20	3001308
16	109	20	3008452
17	1	???	3010636	From this block, i could not understand the information there
19	2909	124	3014334
20	3	44	3375050

[AntonnMal]

...also I need a way to get the items name from packets...

At least in classic item names are loaded when needed using 0x0F, 0x30 packet. So if the server sends a particular item id from any packet, it also sends this LoadItem packet if the client sees this item for the first time since logging on.

[KagefumiMerry]

...also I need a way to get the items name from packets...

At least in classic item names are loaded when needed using 0x0F, 0x30 packet. So if the server sends a particular item id from any packet, it also sends this LoadItem packet if the client sees this item for the first time since logging on.

0x0F, 0x30 packet seems last hope on item names (but seems only game available/player owned items could get 0x0F, 0x30 packet)

I am also looking at 9 0x11, 0xe1 packets (ICE packs, a bit away from packet-lib usages)

But I need time to see how the UTF16 string store in ICE files (seem not like .text / .cmx file format?)