"Received an invalid Relay Bind Received message: Wrong length"

Unity Services
,
1

Hello! I am still new to multiplayer and Netcode for Gameobject/ Unity Services and ran into something that is stumping me.

I am getting this relay error in the console once every 20 seconds or so in both Host and Client consoles after a client connects via a Lobby. I searched online but cannot find any info regarding it.

Here is the console error:

Received an invalid Relay Received message: Wrong length
0x00007ff7c7dc5e2a (Unity) DefaultBurstRuntimeLogCallback
0x00007ff7c74955fa (Unity) BurstCompilerService_CUSTOM_RuntimeLog
0x00007ffc62cc9c02 (ef999a010cd80055dcb4debcdd1044d) Unity.Networking.Transport.Relay.RelayNetworkProtocol.ProcessRelayData (at F:/Unity Game Projects/Multiplayer Scorching/10-10-24/Library/PackageCache/com.unity.burst@1.8.18/.Runtime/Library/PackageCache/com.unity.transport@1.5.0/Runtime/Relay/RelayNetworkProtocol.cs:427)
0x00007ffc62cca560 (ef999a010cd80055dcb4debcdd1044d) Unity.Networking.Transport.Relay.RelayNetworkProtocol.ProcessReceive(System.IntPtr stream, ref Unity.Networking.Transport.NetworkInterfaceEndPoint endpoint, int size, ref Unity.Networking.Transport.NetworkSendInterface sendInterface, ref Unity.Networking.Transport.NetworkSendQueueHandle queueHandle, System.IntPtr userData, ref Unity.Networking.Transport.ProcessPacketCommand command) -> void_4a8673ec5b25397f38b5c69063b85440 from Unity.Networking.Transport, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null (at F:/Unity Game Projects/Multiplayer Scorching/10-10-24/Library/PackageCache/com.unity.burst@1.8.18/.Runtime/Library/PackageCache/com.unity.transport@1.5.0/Runtime/Relay/RelayNetworkProtocol.cs:400)
0x00007ffc62cc9ae0 (ef999a010cd80055dcb4debcdd1044d) d34ee21f050e397b38df84c4fa2b361d
0x00007ffc62caea5f (ef999a010cd80055dcb4debcdd1044d) Unity.Networking.Transport.NetworkDriver.AppendPacket (at F:/Unity Game Projects/Multiplayer Scorching/10-10-24/Library/PackageCache/com.unity.burst@1.8.18/.Runtime/Library/PackageCache/com.unity.transport@1.5.0/Runtime/NetworkDriver.cs:1543)
0x00007ffc62cd1d08 (ef999a010cd80055dcb4debcdd1044d) Unity.Networking.Transport.NetworkPacketReceiver.AppendPacket (at F:/Unity Game Projects/Multiplayer Scorching/10-10-24/Library/PackageCache/com.unity.burst@1.8.18/.Runtime/Library/PackageCache/com.unity.transport@1.5.0/Runtime/INetworkInterface.cs:60)
0x00007ffc62cd2511 (ef999a010cd80055dcb4debcdd1044d) Unity.Jobs.IJobExtensions.JobStruct`1<Unity.Networking.Transport.BaselibNetworkInterface.ReceiveJob>.Execute(ref Unity.Networking.Transport.BaselibNetworkInterface.ReceiveJob data, System.IntPtr additionalPtr, System.IntPtr bufferRangePatchData, ref Unity.Jobs.LowLevel.Unsafe.JobRanges ranges, int jobIndex) -> void_1a17c9416545ae7079718413b8a5101d from UnityEngine.CoreModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null (at F:/Unity Game Projects/Multiplayer Scorching/10-10-24/Library/PackageCache/com.unity.burst@1.8.18/.Runtime/unknown/unknown:0)
0x00007ffc62cd14dd (ef999a010cd80055dcb4debcdd1044d) bf504eda069940d0a0a13ea8363bce1d
0x00007ff7c80b7a22 (Unity) ExecuteJob
0x00007ff7c80b8e0f (Unity) ForwardJobToManaged
0x00007ff7c80b4c3a (Unity) ujob_execute_job
0x00007ff7c80b406d (Unity) lane_guts
0x00007ff7c80b6ca4 (Unity) worker_thread_routine
0x00007ff7c82e468b (Unity) Thread::RunThreadWrapper
0x00007ffcaaac7374 (KERNEL32) BaseThreadInitThunk
0x00007ffcac6bcc91 (ntdll) RtlUserThreadStart

Navigating to the code linked in the error I found this switch statement but I do not really know what to do with it:

   case RelayMessageType.Relay:
                    var relayMessage = *(RelayMessageRelay*)data;
                    relayMessage.DataLength = RelayNetworkProtocol.SwitchEndianness(relayMessage.DataLength);
                    if (size < RelayMessageRelay.Length || size != RelayMessageRelay.Length + relayMessage.DataLength)
                    {
                        UnityEngine.Debug.LogError($"Received an invalid Relay Received message: Wrong length");
                        command.Type = ProcessPacketCommandType.Drop;
                        return true;
                    }

It seems like the relaymessage.datalength is not matching and maybe the packet is being dropped?

I am using Unity version 2022.3.49f1, Relay 1.1.1, and Lobby 1.2.2.
Any help would be greatly appreciated!

Thank you!

1 Like
2

I am encountering the same problem. I noticed the error yesterday and it also started appearing in older builds, maybe it’s related to Relay backend?

Unity version 2022.3.40f1, Relay 1.1.1, and Lobby 1.2.2.

3

Same for me since yesterday or even the day before. Using NGO 1.11.0, Relay 1.1.1, Lobby 1.2.2 and Unity 2022.3.50f

4

Same error, Unity 6, Multiplayer Services SDK, NGO, Matchmaking + Relay.

System.ArgumentException: The size of the required type (38) does not fit in the payload (22).
This Exception was thrown from a job compiled with Burst, which has limited exception support.
0x00007fff3ce39cfe (Unity) burst_abort

That part disappeared when I turned off burst in the editor.
And this problem remained, and apparently it is in Relay =>

ArgumentException: The size of the required type (38) does not fit in the payload (22).
Unity.Networking.Transport.PacketProcessor.RemoveFromPayloadStart[T] () (at ./Library/PackageCache/com.unity.transport/Runtime/PacketProcessor.cs:184)
Unity.Networking.Transport.RelayLayer+ReceiveJob`1[T].ProcessReceivedMessages () (at ./Library/PackageCache/com.unity.transport/Runtime/Layers/RelayLayer.cs:272)
Unity.Networking.Transport.RelayLayer+ReceiveJob`1[T].Execute () (at ./Library/PackageCache/com.unity.transport/Runtime/Layers/RelayLayer.cs:187)
Unity.Jobs.IJobExtensions+JobStruct`1[T].Execute (T& data, System.IntPtr additionalPtr, System.IntPtr bufferRangePatchData, Unity.Jobs.LowLevel.Unsafe.JobRanges& ranges, System.Int32 jobIndex) (at <adbae017f0374fce9921b97a33a4e8ca>:0)
Unity.Jobs.JobHandle:ScheduleBatchedJobsAndComplete(JobHandle&)
Unity.Jobs.JobHandle:Complete()
Unity.Netcode.Transports.UTP.UnityTransport:Update() (at ./Library/PackageCache/com.unity.netcode.gameobjects/Runtime/Transports/UTP/UnityTransport.cs:956)
5

We have identified the issue and released a fix in the backend. No action needed from customers.
New game sessions should no longer see this problem.

Thank you for raising this problem!

4 Likes
6

Thank you for the quick response!

7

Thank you so much for the quick response & fix @BGagnon_Unity !