Data buffer not correct size.

[daHiry]

I'm not too sure how to proceed with my bot. The core mechanic of it is to mine down to bedrock using a special pick. When I give it a regular pickaxe it works perfect, but when I give it a 7x7 pickaxe, which mines a 7x7 radius around the block you break, I get "Data buffer not correct size". I've tried surrounding the code in a try catch but that doesn't seem to work either.

https://gyazo.com/67543bd41d3c38e253d35822a19cb85d

[rom1504]

Do you have the code of the plugin that create that 7x7 pickaxe ? This is a completely non vanilla feature and as such we probably have to adapt a few things to make it work.

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On Mon, May 21, 2018, 21:21 Devin ***@***.***> wrote: I'm not too sure how to proceed with my bot. The core mechanic of it is to mine down to bedrock using a special pick. When I give it a regular pickaxe it works perfect, but when I give it a 7x7 pickaxe, which mines a 7x7 radius around the block you break, I get "Data buffer not correct size". I've tried surrounding the code in a try catch but that doesn't seem to work either. https://gyazo.com/67543bd41d3c38e253d35822a19cb85d — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#666>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ACPN_pfmTU96b2TVQiGUUtOlSOomCsDjks5t0xPLgaJpZM4UHfLi> .

[rom1504]

Also try to enable debug mode with DEBUG=minecraft-protocol node bot.js and report back the packets just before the crash.

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On Mon, May 21, 2018, 21:27 Romain Beaumont ***@***.***> wrote: Do you have the code of the plugin that create that 7x7 pickaxe ? This is a completely non vanilla feature and as such we probably have to adapt a few things to make it work. On Mon, May 21, 2018, 21:21 Devin ***@***.***> wrote: > I'm not too sure how to proceed with my bot. The core mechanic of it is > to mine down to bedrock using a special pick. When I give it a regular > pickaxe it works perfect, but when I give it a 7x7 pickaxe, which mines a > 7x7 radius around the block you break, I get "Data buffer not correct > size". I've tried surrounding the code in a try catch but that doesn't seem > to work either. > > https://gyazo.com/67543bd41d3c38e253d35822a19cb85d > > — > You are receiving this because you are subscribed to this thread. > Reply to this email directly, view it on GitHub > <#666>, or mute the > thread > <https://github.com/notifications/unsubscribe-auth/ACPN_pfmTU96b2TVQiGUUtOlSOomCsDjks5t0xPLgaJpZM4UHfLi> > . >

[daHiry]

The plugin is this plugin, https://www.spigotmc.org/resources/shockwavetools-massivecore-uuid.43854/
The packets, https://pastebin.com/jNsAtMU2

[rom1504]

Ah thanks. I think I know why it happens. The server sends a groundUp: false in the chunk packet and I think we don't handle that in prismarine-chunk.
I'll have a look

[rom1504]

Yeah it def doesn't handle it https://github.com/PrismarineJS/prismarine-chunk/blob/master/src/pc/1.9/chunk.js#L316
https://github.com/PrismarineJS/prismarine-chunk/blob/master/src/pc/1.8/chunk.js#L161

vanilla always send groundUp: true

I guess we need to add that feature in prismarine-chunk so that your server can work.

http://wiki.vg/Chunk_Format#Ground-up_continuous

that's the description of that property.

[rom1504]

opened an issue for it there PrismarineJS/prismarine-chunk#43