Kicked for `too large: string` when chatting more than 256 bytes of `char`s

[Laptop59]

I've searched existing issues and couldn't find a duplicate.

• I confirm this is not a duplicate.

Operating System

Arch Linux

Server Software Version/Commit

0.1.0-dev+26.1 (Commit: b8c7067/debug)

What happened?

When a player types more than 256 bytes' worth of chars into the chat without exceeding the 256-character limit, the server kicks them out for Error while handling incoming packet too large: string.

To Reproduce

1. Join the server
2. Type the following 65 pumpkin symbols into the chat: 🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃

Expected behavior

It should show that I chatted the 65 pumpkin symbols to everyone without kicking me out of the server.

[chocodev11]

why did you type 🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃 in chat?

[Laptop59]

why did you type 🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃🎃 in chat?

while I was making the E plugin i noticed that too many E symbols kicked me out, so i decided to extend it to an issue with pumpkin emojis

[Q2297045667]

😂😂😂😂😂
Only someone super bored would test this.

[chocodev11]

btw it vanilla behaviour

[Laptop59]

btw it vanilla behaviour

it is, except for the fact that vanilla allows a maximum of 256 UTF-16 chars instead of 256 bytes (so up to 128🎃)

[Laptop59]

i think i may have fixed it