Add plist entries required MPC in iOS 14

Assets/Scenes/ARCollaborationData/Editor.meta

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Assets/Scenes/ARCollaborationData/Editor/CollaborationBuildPostprocessor.cs

+#if UNITY_IOS
+using System.Collections.Generic;
+using UnityEditor.Build;
+using UnityEditor.Build.Reporting;
+using UnityEditor.iOS.Xcode;
+using System.IO;
+using System.Linq;
+using UnityEditor.Callbacks;
+using UnityEngine;
+using UnityEngine.XR.ARFoundation.Samples;
+
+namespace UnityEditor.XR.ARFoundation.Samples
+{
+    class Processor : IPostprocessBuildWithReport, IPreprocessBuildWithReport
+    {
+        public int callbackOrder => 2;
+
+        void IPreprocessBuildWithReport.OnPreprocessBuild(BuildReport report)
+        {
+            s_CollaborativeSessions = new List<CollaborativeSession>();
+        }
+
+        PlistElementArray GetOrCreatePlistElementArray(PlistElementDict dict, string key)
+        {
+            var element = dict[key];
+            return element == null ? dict.CreateArray(key) : element.AsArray();
+        }
+
+        void IPostprocessBuildWithReport.OnPostprocessBuild(BuildReport report)
+        {
+            if (report.summary.platform != BuildTarget.iOS)
+                return;
+
+            if (s_CollaborativeSessions.Count == 0)
+                return;
+
+            var plistPath = Path.Combine(report.summary.outputPath, "Info.plist");
+            var plist = new PlistDocument();
+            plist.ReadFromString(File.ReadAllText(plistPath));
+            var root = plist.root;
+
+            if (root["NSLocalNetworkUsageDescription"] == null)
+            {
+                root["NSLocalNetworkUsageDescription"] = new PlistElementString("Collaborative Session");
+            }
+
+            // Get all the service names
+            var bonjourServices = GetOrCreatePlistElementArray(root, "NSBonjourServices");
+            var existingValues = new HashSet<string>(bonjourServices.values
+                .Where(value => value is PlistElementString)
+                .Select(value => value.AsString()));
+            var valuesToAdd = new HashSet<string>();
+
+            foreach (var serviceType in s_CollaborativeSessions
+                .Select(collaborativeSession => collaborativeSession.serviceType)
+                .Where(serviceType => !string.IsNullOrEmpty(serviceType)))
+            {
+                AddIfNecessary(existingValues, valuesToAdd, $"_{serviceType}._tcp");
+                AddIfNecessary(existingValues, valuesToAdd, $"_{serviceType}._udp");
+            }
+
+            foreach (var value in valuesToAdd)
+            {
+                bonjourServices.AddString(value);
+            }
+
+            File.WriteAllText(plistPath, plist.WriteToString());
+        }
+
+        static void AddIfNecessary(HashSet<string> existingValues, HashSet<string> valuesToAdd, string value)
+        {
+            if (!existingValues.Contains(value))
+                valuesToAdd.Add(value);
+        }
+
+        [PostProcessScene]
+        static void OnPostProcessScene()
+        {
+            foreach (var collaborativeSession in Object.FindObjectsOfType<CollaborativeSession>())
+            {
+                s_CollaborativeSessions.Add(collaborativeSession);
+            }
+        }
+
+        static List<CollaborativeSession> s_CollaborativeSessions = new List<CollaborativeSession>();
+    }
+}
+#endif

Assets/Scenes/ARCollaborationData/Editor/CollaborationBuildPostprocessor.cs.meta

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