feat: use DTLS for relay (#485)

Author: unity-ptrottier

Assets/BossRoom/Scripts/Shared/Net/ConnectionManagement/ClientGameNetPortal.cs

@@ -190,7 +190,7 @@ public async void StartClientUnityRelayModeAsync(string joinCode, Action<string>
                 var (ipv4Address, port, allocationIdBytes, connectionData, hostConnectionData, key) = clientRelayUtilityTask.Result;
 
                 m_LobbyServiceFacade.UpdatePlayerRelayInfoAsync(allocationIdBytes.ToString(), joinCode, null, null);
-                utp.SetRelayServerData(ipv4Address, port, allocationIdBytes, key, connectionData, hostConnectionData);
+                utp.SetClientRelayData(ipv4Address, port, allocationIdBytes, key, connectionData, hostConnectionData, isSecure: true);
             }
             catch (Exception e)
             {

Assets/BossRoom/Scripts/Shared/Net/ConnectionManagement/GameNetPortal.cs

@@ -209,7 +209,7 @@ public async void StartUnityRelayHost()
                         m_LobbyServiceFacade.UpdatePlayerRelayInfoAsync(allocationIdBytes.ToString(), joinCode, null, null);
 
                         // we now need to set the RelayCode somewhere :P
-                        utp.SetRelayServerData(ipv4Address, port, allocationIdBytes, key, connectionData);
+                        utp.SetHostRelayData(ipv4Address, port, allocationIdBytes, key, connectionData, isSecure: true);
                     }
                     catch (Exception e)
                     {

Packages/com.unity.multiplayer.samples.coop/Utilities/Net/UnityRelayUtilities.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using System.Threading.Tasks;
 using UnityEngine;
 using Unity.Services.Relay;
@@ -8,6 +9,7 @@ namespace Unity.Multiplayer.Samples.BossRoom
 {
     public static class UnityRelayUtilities
     {
+        private const string kDtlsConnType = "dtls";
 
         public static async
             Task<(string ipv4address, ushort port, byte[] allocationIdBytes, byte[] connectionData, byte[] key, string
@@ -37,7 +39,8 @@ public static async
                 throw new Exception($"Creating join code request has failed: \n {exception.Message}");
             }
 
-            return (allocation.RelayServer.IpV4, (ushort)allocation.RelayServer.Port, allocation.AllocationIdBytes,
+            var dtlsEndpoint = allocation.ServerEndpoints.First(e => e.ConnectionType == kDtlsConnType);
+            return (dtlsEndpoint.Host, (ushort)dtlsEndpoint.Port, allocation.AllocationIdBytes,
                 allocation.ConnectionData, allocation.Key, joinCode);
         }
 
@@ -59,7 +62,8 @@ public static async
             Debug.Log($"host: {allocation.HostConnectionData[0]} {allocation.HostConnectionData[1]}");
             Debug.Log($"client: {allocation.AllocationId}");
 
-            return (allocation.RelayServer.IpV4, (ushort)allocation.RelayServer.Port, allocation.AllocationIdBytes,
+            var dtlsEndpoint = allocation.ServerEndpoints.First(e => e.ConnectionType == kDtlsConnType);
+            return (dtlsEndpoint.Host, (ushort)dtlsEndpoint.Port, allocation.AllocationIdBytes,
                 allocation.ConnectionData, allocation.HostConnectionData, allocation.Key);
         }
     }