Merging in Cooldown for Lobby Buttons.

Assets/Prefabs/UI/JoinContent.prefab

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Assets/Scripts/Game/GameManager.cs

+using System;
 using LobbyRelaySample.Relay;
 using System.Collections;
 using System.Collections.Generic;
         private LobbyContentHeartbeat m_lobbyContentHeartbeat = new LobbyContentHeartbeat();
         private RelayUtpSetup m_relaySetup;
         private RelayUtpClient m_relayClient;
+
+        // The Lobby API rate limits query requests to one every 1.5s, and it will return a 429 "Too Many Requests" error otherwise.
+        private const float k_lobbyAssignmentCoolingSeconds = 1.5f;
+        private bool m_coolingDown;
 
         /// <summary>Rather than a setter, this is usable in-editor. It won't accept an enum, however.</summary>
         public void SetLobbyColorFilter(int color) { m_lobbyColorFilter = (LobbyColor)color; }
             }
             else if (type == MessageType.CreateLobbyRequest)
             {
+                if (!LobbyRequestCooledDown())
+                    return;
+
-                    OnCreatedLobby();
-                },
-                OnFailedJoin);
+                        OnCreatedLobby();
+                    },
+                    OnFailedJoin);
+                if (!LobbyRequestCooledDown())
+                    return;
+
-                    OnJoinedLobby();
-                },
-                OnFailedJoin);
+                        OnJoinedLobby();
+                    },
+                    OnFailedJoin);
+                if (!LobbyRequestCooledDown())
+                    return;
                 m_lobbyServiceData.State = LobbyQueryState.Fetching;
                 LobbyAsyncRequests.Instance.RetrieveLobbyListAsync(
                     qr => {
             {   Component.Destroy(m_relayClient);
                 m_relayClient = null;
             }
+        }
+
+        private bool LobbyRequestCooledDown()
+        {
+            if (m_coolingDown)
+                return false;
+            StartCoroutine(RequestCoolDown());
+            return true;
+        }
+
+        private IEnumerator RequestCoolDown()
+        {
+            m_coolingDown = true;
+            yield return new WaitForSeconds(k_lobbyAssignmentCoolingSeconds);
+            m_coolingDown = false;
         }
 
         /// <summary>

Assets/Scripts/UI/JoinCreateLobbyUI.cs

             if (observed.State == GameState.JoinMenu)
             {
                 Show();
-                Locator.Get.Messenger.OnReceiveMessage(MessageType.QueryLobbies, null);
             }
             else
             {

Assets/Scripts/UI/JoinMenuUI.cs

+using System;
 using System.Collections.Generic;
 using TMPro;
 using UnityEngine;
     {
         [SerializeField]
         LobbyButtonUI m_LobbyButtonPrefab;
-
-        [SerializeField]
-        TMP_InputField m_LobbyCodeField;
 
         [SerializeField]
         RectTransform m_LobbyButtonParent;
                 RemoveLobbyButton(m_LocalLobby[key]);
         }
 
-        bool CanDisplay(LocalLobby lobby)
+        public void JoinMenuChangedVisibility(bool show)
+        {
+            if (show)
+                OnRefresh();
+        }
+
+        private bool CanDisplay(LocalLobby lobby)
         {
             return lobby.Data.State == LobbyState.Lobby && !lobby.Private;
         }
         /// </summary>
-        void AddNewLobbyButton(string lobbyCode, LocalLobby lobby)
+        private void AddNewLobbyButton(string lobbyCode, LocalLobby lobby)
         {
             var lobbyButtonInstance = Instantiate(m_LobbyButtonPrefab, m_LobbyButtonParent);
             lobbyButtonInstance.GetComponent<LocalLobbyObserver>().BeginObserving(lobby);
             m_LocalLobby.Add(lobbyCode, lobby);
         }
 
-        void UpdateLobbyButton(string lobbyCode, LocalLobby lobby)
+        private void UpdateLobbyButton(string lobbyCode, LocalLobby lobby)
-        void RemoveLobbyButton(LocalLobby lobby)
+        private void RemoveLobbyButton(LocalLobby lobby)
         {
             var lobbyID = lobby.LobbyID;
             var lobbyButton = m_LobbyButtons[lobbyID];

Assets/Scripts/UI/SpinnerUI.cs

                 errorTextVisibility.Show();
                 var errorString = new StringBuilder();
                 errorString.Append("Error");
-                var codeString = ": " + observed.lastErrorCode;
-                if (observed.lastErrorCode < 1)
-                    codeString = ".";
+                errorString.Append(": ");
+                if (observed.lastErrorCode > 0)
+                {
+                    errorString.Append(observed.lastErrorCode);
+                    errorString.Append(", ");
+                }
+                errorString.Append("Check Unity Console Log for Details.");
-                errorString.Append(codeString);
                 errorText.SetText(errorString.ToString());
             }
             else if (observed.State == LobbyQueryState.Fetched)

Assets/Scripts/UI/UIPanelBase.cs

     public class UIPanelBase : MonoBehaviour
     {
         [SerializeField]
-        private UnityEvent<bool> m_onVisibilityChange;
+        protected UnityEvent<bool> m_onVisibilityChange;
         bool showing;
 
         CanvasGroup m_canvasGroup;

Assets/Scripts/Lobby/LobbyListHeartbeat.cs

-using UnityEngine;
-
-namespace LobbyRelaySample
-{
-    /// <summary>
-    /// Keeps the lobby list updated automatically.
-    /// </summary>
-    public class LobbyListHeartbeat : MonoBehaviour
-    {
-        private const float k_refreshRate = 5;
-        private float m_refreshTimer = 0;
-
-        // This is called in-editor via events.
-        public void SetActive(bool isActive)
-        {
-            if (isActive)
-                Locator.Get.UpdateSlow.Subscribe(OnUpdate);
-            else
-                Locator.Get.UpdateSlow.Unsubscribe(OnUpdate);
-            m_refreshTimer = 0;
-        }
-
-        private void OnUpdate(float dt)
-        {
-            m_refreshTimer += dt;
-            if (m_refreshTimer > k_refreshRate)
-            {
-                Locator.Get.Messenger.OnReceiveMessage(MessageType.QueryLobbies, null);
-                m_refreshTimer = 0;
-            }
-        }
-    }
-}

Assets/Scripts/Lobby/LobbyListHeartbeat.cs.meta

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