# SetRelayServerData isn't working as i expected
**URL:** https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142
**Category:** Relay
**Tags:** Relay, Question
**Created:** [November 19, 2024, 4:30pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142 "2024-11-19T16:30:33Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@lucasbarbier444](https://discussions.unity.com/u/lucasbarbier444)
#### Post date: [November 19, 2024, 4:30pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/1 "2024-11-19T16:30:33Z")
Hello,
I’ve recently followed the multiplayer course of Code Monkey, and I’m facing a problem that I clearly don’t understand.
When I need to SetRelayServerData, I followed the instructions of the course and the documentation and wrote this :
NetworkManager.Singleton.GetComponent().SetRelayServerData(new RelayServerData(allocation, “dtls”));
I don’t know what is that error, I double checked the document and everything is supposed to be fine. I don’t understand, I’m on Unity 6.
Thank you in advance
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### Author:  [@lucasbarbier444](https://discussions.unity.com/u/lucasbarbier444)
#### Post date: [November 19, 2024, 5:54pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/2 "2024-11-19T17:54:09Z")
Update :
I understood that I need to defini clearly the struct with all the information I found on with the documentation and ChatGPT
But now after loading into my lobby, man seconds later this append
And again, I’m a bit lost
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### Author:  [@mcanfield\_unity](https://discussions.unity.com/u/mcanfield_unity)
#### Post date: [November 19, 2024, 6:30pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/3 "2024-11-19T18:30:59Z")
Hiya @lucasbarbier444
From your screenshot, I’m not sure you’re using the proper `hostConnectionData` from the allocation? You’ve got `allocation.ConnectionData` instead of `allocation.HostConnectionData` for that parameter in the `RelayServerData` signature. Can you give that a try?
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### Author:  [@lucasbarbier444](https://discussions.unity.com/u/lucasbarbier444)
#### Post date: [November 19, 2024, 6:33pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/4 "2024-11-19T18:33:00Z")
> [@mcanfield\_unity](#):
>
> HostConnectionData
Hello thank’s for the answer
It seems that Unity think HostConnectionData doesn’t exist ?
But it’s weird, because I saw some information about the : “HostConnectionData”, and I just can’t figure where is it
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### Author:  [@mcanfield\_unity](https://discussions.unity.com/u/mcanfield_unity)
#### Post date: [November 19, 2024, 7:00pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/5 "2024-11-19T19:00:22Z")
Ok, is this the Kitchen Chaos course? I did that in my free time this past summer and ported it to Unity 6 + the new Multiplayer Services SDK. Are you using the Multiplayer Services SDK instead of the standalone SDKs? (FYI that is the recommendation since those packages will be deprecated in upcoming releases).
I found that the new SDK does not ship an assembly for Relay therefore couldn’t use the Relay allocation based constructors for UnityTransport and instead needed to construct the RelayServerData myself. I gave that feedback to the team and I believe they provided a better option with that SDK. Here is a recent post detailing how to use the new sdk:
> [@How to use RelayServerData?](https://discussions.unity.com/t/how-to-use-relayserverdata/1547792/2):
>
> Hello If you are using the Multiplayer Services SDK (com.unity.services.multiplayer), you can use AllocationUtils.ToRelayServerData(allocation, connectionType) to build the RelayServerData model. This is within the Unity.Services.Relay.Models namespace. You can pass it in the NetworkManager.Singleton.GetComponent().SetRelayServerData() method.
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### Author:  [@lucasbarbier444](https://discussions.unity.com/u/lucasbarbier444)
#### Post date: [November 19, 2024, 7:26pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/6 "2024-11-19T19:26:59Z")
Yep this is this course ! And also yes I use the Multiplayer Services SDK and not the Relay classic one ( and I do the same for the Lobby SDK, I don’t use the classic)
So If I understand well, the Multiplayer Services Package doesn’t have a certain assembly that is requiered for making the Relay, and so I’ll need to find a better solution with the topic you linked me ? Am I right ?
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### Author:  [@mcanfield\_unity](https://discussions.unity.com/u/mcanfield_unity)
#### Post date: [November 19, 2024, 7:32pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/7 "2024-11-19T19:32:56Z")
Cool, thanks for confirming that information. The direct link has the solution that “should” work, use the `AllocationUtils` class as demonstrated by Erick. Otherwise, Here is the code I used to get that course to work (again, I think that post should resolve your issue, but providing the snippet I wrote “just in case”).
```auto
public async void JoinWithCode(string lobbyCode) {
OnJoinStarted?.Invoke(this, EventArgs.Empty);
try {
joinedLobby = await LobbyService.Instance.JoinLobbyByCodeAsync(lobbyCode);
string relayJoinCode = joinedLobby.Data[KEY_RELAY_JOIN_CODE].Value;
JoinAllocation joinAllocation = await JoinRelay(relayJoinCode);
// NetworkManager.Singleton.GetComponent().SetRelayServerData(new RelayServerData(joinAllocation, "dtls"));
// Note: the new MPS SDK (as of 0.5.0) does not ship an assembly for Relay therefore we cannot use the Relay
// allocation based constructors for UnityTransport and instead must construct the RelayServerData ourselves
string host = joinAllocation.RelayServer.IpV4;
ushort port = (ushort)joinAllocation.RelayServer.Port;
byte[] joinAllocationId = joinAllocation.AllocationIdBytes;
byte[] connectionData = joinAllocation.ConnectionData;
byte[] hostConnectionData = joinAllocation.HostConnectionData;
byte[] key = joinAllocation.Key;
bool isSecure = false;
foreach (var endpoint in joinAllocation.ServerEndpoints)
{
if (endpoint.ConnectionType == "dtls")
{
host = endpoint.Host;
port = (ushort)endpoint.Port;
isSecure = endpoint.Secure;
}
}
NetworkManager.Singleton.GetComponent().SetRelayServerData(new RelayServerData(host, port, joinAllocationId, connectionData, hostConnectionData, key, isSecure));
KitchenGameMultiplayer.Instance.StartClient();
} catch (LobbyServiceException e) {
Debug.Log(e);
OnJoinFailed?.Invoke(this, EventArgs.Empty);
}
}
```
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### Author:  [@lucasbarbier444](https://discussions.unity.com/u/lucasbarbier444)
#### Post date: [November 19, 2024, 7:36pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/8 "2024-11-19T19:36:22Z")
Omg, the topic worked !!! OMG THANK YOU !
Just a little question, why is this solution work ? And how would I find this kind of solution if you wouldn’t be there ?
I want to be able to solve that pretty tough problem by myself
AGAIN THANK YOU
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### Author:  [@mcanfield\_unity](https://discussions.unity.com/u/mcanfield_unity)
#### Post date: [November 19, 2024, 8:10pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/9 "2024-11-19T20:10:14Z")
Nice, glad it helped! So firstly CodeMonkey’s excellent course was done with the original standalone SDKs and although things are fairly close to compatible with the new Multiplayer Services SDK there are some differences. Secondly, the solution works because it’s doing specifically what you wanted it to do but in a simplified api call 🙂
As for how to find such a solution… we’ve begun documenting some of this here: [Migrating from the standalone SDKs to the Multiplayer SDK](https://docs.unity.com/ugs/en-us/manual/mps-sdk/manual/migration-path) but honestly on this specific solution we needed to do better by documenting the `AllocationUtils` use cases and making that easy to find. Your forum post and the other one along with some internal feedback has already triggered a work item to properly document this moving forward.
As a general recommendation, I personally spend time skimming through API documentation, but also open Unity packages in my IDE and trace through the code to get a general sense of what things do and the shape of the public interfaces. Live debugging with breakpoints to understand the flow is also super helpful. Usually I come away with a sufficient grasp to debug what’s going wrong in my custom code. But this is just typical programming advice, not terribly pertinent to you specific use case.
Good luck with the remainder of the course and your future projects!
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### Author:  [@lucasbarbier444](https://discussions.unity.com/u/lucasbarbier444)
#### Post date: [November 19, 2024, 8:33pm UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/10 "2024-11-19T20:33:25Z")
Okay okay I take notes I take notes. I don’t pass time on API documentation at all, at least not the same way you doing it hehe !
I can’t wait to one day be able to help someone else with that kind of problem et maybe apply for some jobs that require that kind of skill level !
Thank you very much again !
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### Author:  [@Hemanthchinnu](https://discussions.unity.com/u/Hemanthchinnu)
#### Post date: [December 25, 2024, 11:59am UTC](https://discussions.unity.com/t/setrelayserverdata-isnt-working-as-i-expected/1556142/11 "2024-12-25T11:59:39Z")
man you are awsome i was searching for this solution whole internet luckily I found this
thanks to you man this is working as expected 🫰
so after that i found this in the unity DOCS - and it is working
this is the code i got it from unity DOCS and i updated it a little bit
if it helps for anyone
