Synced strings over a certain length will cause an ArgumentOutOfRangeException | Voters

Synced strings over a certain length will cause an ArgumentOutOfRangeException

tracked

FairlySadPanda

Name of the VRCSDK package you have imported.
VRCSDK3-2020.03.21.12.04
Name of the Udon SDK package you have imported.
UDONSDK-2020.03.21.12.24
Version/build of VRChat you’re using to test, if necessary.
Latest open beta. (906)
A general description of the bug you’re encountering.
Attempting to send a long string, like "Trip,Bond,Diamond,Cap,Copper,Canada,Ray,Circle,Centaur,Deck,Dwarf,Wind,Arm,Seal,Pipe,Pyramid,Nail,Amazon,Queen,Theater,Screen,Jupiter,Dress,Game,Whale," over the network via synced vars will return the following error:
2020.03.21 21:33:39 Error      -  [FlatBufferNetworkSerializer] Caught ArgumentOutOfRangeException: Non-negative number required.
Parameter name: count
at System.Text.UTF8Encoding.GetString (System.Byte[] bytes, System.Int32 index, System.Int32 count) [0x00000] in <00000000000000000000000000000000>:0 
at ǄǅǅǄǅǅǄǅǄǄǅǄǅǅǄǄǄǅǅǄǅǅǅǅǅǅǄǄǅǅǅǄǅǅǅǄǅǅǄǅǄǅǄǄǅǅǅ.ǄǅǄǅǄǄǄǅǅǅǅǅǅǅǅǅǄǅǅǅǅǄǄǄǅǄǅǄǄǅǅǅǄǅǅǅǄǄǅǄǄǅǄǄǅǄǄ (System.Int32 ǅǅǅǄǄǅǅǄǅǅǅǄǄǅǄǅǄǄǄǅǅǄǄǄǅǅǅǅǅǅǄǄǄǅǄǄǅǄǅǄǅǅǄǅǄǅǄ, System.Int32 ǄǄǅǄǄǅǅǄǅǄǅǄǅǄǅǄǄǅǅǄǅǄǄǄǅǅǅǄǄǅǅǄǄǄǅǄǄǄǄǄǅǅǄǄǄǅǅ) [0x00000] in <00000000000000000000000000000000>:0 
at VRC.Networking.UdonSync.ǄǄǅǄǄǅǅǅǄǅǄǄǅǅǅǅǅǄǅǅǄǄǄǄǅǅǄǄǄǅǅǄǅǄǅǅǅǄǄǅǅǅǄǅǄǄǅ (ǅǄǄǄǅǄǄǄǄǄǄǄǄǄǅǄǅǅǅǅǅǅǅǅǅǄǄǅǅǅǅǅǅǄǄǄǅǅǅǄǅǅǄǅǅǅǄ ǄǄǅǅǄǅǄǅǅǄǄǄǄǄǄǄǅǅǄǄǄǄǅǅǅǅǅǅǄǄǅǄǄǄǅǄǄǄǅǅǄǅǅǄǅǄǄ, System.Int32 ǄǅǅǄǅǄǄǄǅǅǅǅǄǅǅǄǅǅǄǅǄǄǄǄǅǅǄǄǄǄǄǅǅǄǄǄǅǅǅǄǅǄǄǄǄǅǅ, System.Type ǅǄǄǄǄǄǄǄǅǅǅǅǅǄǅǅǅǄǄǄǄǅǅǅǄǅǅǅǅǄǅǅǅǄǅǄǅǄǄǅǅǅǄǄǄǄǅ) [0x00000] in <00000000000000000000000000000000>:0 
at VRC.Networking.UdonSync.ǅǄǄǅǄǄǅǄǅǅǄǅǄǄǄǄǅǄǅǅǄǅǅǅǅǅǅǅǄǅǅǅǅǄǅǄǅǄǄǅǄǄǄǅǅǄǄ (ǅǅǄǅǅǅǅǄǄǄǄǄǄǅǅǄǄǅǄǄǄǄǅǅǅǄǅǅǄǅǄǅǄǄǅǅǄǅǄǅǄǅǅǄǅǅǄ ǄǄǅǅǅǄǄǅǅǅǄǄǅǄǄǄǄǅǅǄǅǅǅǄǄǄǄǄǄǅǄǅǄǅǅǄǄǄǅǄǄǄǄǄǄǄǄ, System.Int32 ǅǄǄǄǄǄǄǅǄǅǅǄǅǅǄǄǄǅǄǄǅǅǅǅǅǄǅǄǅǄǄǅǅǅǅǄǄǄǅǄǅǄǅǄǄǄǅ, System.Single ǅǅǄǅǄǅǄǅǄǄǅǄǄǅǅǄǄǅǄǄǄǄǄǄǅǄǄǅǄǅǄǄǅǅǅǅǄǅǄǄǄǅǄǄǄǄǅ) [0x00000] in <00000000000000000000000000000000>:0 
at VRC.Networking.FlatBufferNetworkSerializer.ǄǅǄǄǅǅǅǅǄǅǄǄǄǄǄǅǅǄǅǅǅǄǄǅǅǄǄǄǄǄǄǅǄǄǅǄǄǅǅǅǄǄǅǄǅǄǅ (ExitGames.Client.Photon.EventData ǄǄǄǅǄǄǅǄǅǅǅǄǅǅǄǅǅǅǅǄǄǅǄǄǄǄǄǄǅǅǄǅǄǅǅǅǅǅǅǅǄǅǅǅǅǅǅ) [0x00000] in <00000000000000000000000000000000>:0 
at NetworkManager.ǄǅǄǄǅǅǅǅǄǅǄǄǄǄǄǅǅǄǅǅǅǄǄǅǅǄǄǄǄǄǄǅǄǄǅǄǄǅǅǅǄǄǅǄǅǄǅ (ExitGames.Client.Photon.EventData ǄǄǄǅǄǄǅǄǅǅǅǄǅǅǄǅǅǅǅǄǄǅǄǄǄǄǄǄǅǅǄǅǄǅǅǅǅǅǅǅǄǅǅǅǅǅǅ) [0x00000] in <00000000000000000000000000000000>:0 
at UnityEngine.AudioClip+PCMReaderCallback.Invoke (System.Single[] data) [0x00000] in <00000000000000000000000000000000>:0 
at ǄǄǅǅǅǅǅǅǅǅǅǅǄǅǅǄǅǄǅǄǄǄǅǅǅǄǄǄǄǄǄǄǅǄǅǅǅǅǅǅǄǅǅǅǅǄǅ.OnEvent (ExitGames.Client.Photon.EventData ǄǄǄǅǄǄǅǄǅǅǅǄǅǅǄǅǅǅǅǄǄǅǄǄǄǄǄǄǅǅǄǅǄǅǅǅǅǅǅǅǄǅǅǅǅǅǅ) [0x00000] in <00000000000000000000000000000000>:0 
at ǄǅǅǄǄǄǄǅǄǄǅǄǅǄǅǄǄǅǄǅǄǅǅǄǄǅǅǄǄǄǄǄǄǅǅǅǄǅǄǅǄǄǄǅǄǅǄ.OnEvent (ExitGames.Client.Photon.EventData ǄǄǄǅǄǄǅǄǅǅǅǄǅǅǄǅǅǅǅǄǄǅǄǄǄǄǄǄǅǅǄǅǄǅǅǅǅǅǅǅǄǅǅǅǅǅǅ) [0x00000] in <00000000000000000000000000000000>:0 
at ExitGames.Client.Photon.PeerBase.DeserializeMessageAndCallback (ExitGames.Client.Photon.StreamBuffer stream) [0x00000] in <00000000000000000000000000000000>:0 
at ExitGames.Client.Photon.EnetPeer.DispatchIncomingCommands () [0x00000] in <00000000000000000000000000000000>:0 
at ExitGames.Client.Photon.PhotonPeer.DispatchIncomingCommands () [0x00000] in <00000000000000000000000000000000>:0 
at ǄǄǄǅǅǅǄǅǅǄǄǄǅǅǄǅǄǄǄǅǅǅǄǄǅǄǄǅǄǄǄǅǄǄǄǅǄǅǅǅǄǅǄǄǅǄǄ.DispatchIncomingCommands () [0x00000] in <00000000000000000000000000000000>:0 
at Photon.Pun.PhotonHandler.FixedUpdate () [0x00000] in <00000000000000000000000000000000>:0
Sending a shorter string, like "Trip,Bond,Diamond,Cap,Copper," works without issue on the same world.
Step by step guide how to replicate the bug.
Will get this if needed.
---
This could just be a limitation of syncing strings - if there's a hardware limit, can we have an error letting us know that the string is too long to be sent?

March 21, 2020

Phasedragon

marked this post as

tracked

Ok that's fair

FairlySadPanda

Reporting as not fixed: error log is still spammed.

Phasedragon

marked this post as

complete

I believe this was back before the udon networking update, which introduced manual sync. Continuous sync still has this limitation and it is not a bug, continuous sync is simply limited to about 256 bytes. Manual sync on the other hand allows up to around 60 thousand bytes, so I'm going to consider this complete.

MyroP

Phasedragon: Personally, the thing that bothered me the most was that this issue would cause log messages getting spammed, causing noticeable framerate drops. When that issue happened to me I was wondering why my world became really laggy.
Also the error message wasn't very clear, so it took me some time to figure out the actual cause of the issue (I only knew that it was caused by the synced string after I found this canny).
So personally, I would suggest changing the error message, and only writing it once to avoid frame drops. Another idea would be show an error message on the emitter's end, because as FairlySadPanda mentioned, that issue only happens on the receiver's ends.

hotpepper360

i have came across the same issue. Please fix it

tr1xus

Please fix this issue

LoliGoddess

Please vrchat fix this

makihiro

The same problem is happend.

Environment

Client: build 932
VRCSDK3+UDON: 2020.05.06.12.14

The promblem string have more then 53 character that condition (a[i]&128 != 0) in my environment.

Example Data

OK:

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz
¼ä¹ùíâ°áè²ÉõÆöòÚÛÜÕµÈðØÀúÌéÔÁ´ÑÄ±ÏÊ½³î×Óåã÷¾Ë:P68`Nïg¿ÍÃæßøÅsBk^Yt;GlRjV]7q

NG:

äääääääääääääääääääääääääääääääääääääääääääääääääääääääääääääääääääääääääää

I created debug world for this problem.

https://www.vrchat.com/home/launch?worldId=wrld_9abb6406-fa99-4719-b945-5cc4fc11ec8d

ଳ̴̖̕

ǅǅǄǅǅǅǅǄǄǄǄǄǄǅǅǄǄǅǄǄǄǄǅǅǅǄǅǅǄǅǄǅǄǄǅǅǄǅǄǅǄǅǅǄǅǅǄ ǄǄǅǅǅǄǄǅǅǅǄǄǅǄǄǄǄǅǅǄǅǅǅǄǄǄǄǄǄǅǄǅǄǅǅǄǄǄǅǄǄǄǄǄǄǄǄ, System.Int32 ǅǄǄǄǄǄǄǅǄǅǅǄǅǅǄǄǄǅǄǄǅǅǅǅǅǄǅǄǅǄǄǅǅǅǅǄǄǄǅǄǅǄǅǄǄ

FairlySadPanda

Should note that this error occurs on the reciever, not the emitter.