[BUG] Could not decode packet

[Kauul]

Latest build makes impossible to join some of my network spigot servers
1.19 seems fine tho

[00:13:09 WARN]: [/31.35.223.120:53851|Kauul] <-> DownstreamBridge <-> [srv-117] - could not decode packet! io.netty.handler.codec.DecoderException: com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 4 path $

Spigot logs :
[00:05:55 INFO]: Kauul[/31.35.223.120:39941] logged in with entity id 23 at ([world]-268.5, 4.0, -653.5) [00:05:55 INFO]: Kauul lost connection: Internal Exception: java.io.IOException: Error while write(...): Broken pipe [00:05:55 INFO]: Kauul left the game.

[electronicboy]

all I can see is that sometning apparently sent bad json in a packet, you can run the server with -Dwaterfall.packet-decode-logging=true to maybe get more info, but, not much for me to go off here, general reproduce without plugins, etc

[Kauul]

it is most likely caused by one off our plugins i will stay on 1.19 for the moment i'll run the command you provided tomorrow thanks

…

On Sat, Nov 4, 2023 at 1:22 AM Shane Freeder ***@***.***> wrote: all I can see is that sometning apparently sent bad json in a packet, you can run the server with -Dwaterfall.packet-decode-logging=true to maybe get more info, but, not much for me to go off here, general reproduce without plugins, etc — Reply to this email directly, view it on GitHub <#830 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AUNLZCRAFCV3ZFZNZLSC2KLYCWDEBAVCNFSM6AAAAAA65EGSIGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTOOJTGI3DINZQGM> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Packsolite]

Hi, we're facing the same issue. Seems like it's triggered when sending empty/blank messages from a server:

io.netty.handler.codec.DecoderException: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Not a JSON Object: [" "]

// Edit
Might be linked to ViaVersion/ViaVersion#3552

[Sckaletz]

We have the same issue when players try to join our servers with 1.20.3.
https://paste.gg/p/anonymous/8f54662e04084e1cbf7a83725d3e3a0e