fix dependcy versions: iOS building

iOS/Main.cs

@@ -1,15 +1,13 @@
 using UIKit;
+using System;
 
 namespace qController.iOS
 {
     public class Application
     {
-        // This is the main entry point of the application.
         static void Main(string[] args)
         {
-            // if you want to use a different Application Delegate class from "AppDelegate"
-            // you can specify it here.
-            UIApplication.Main(args, null, "AppDelegate");
+            UIApplication.Main(args, null, typeof(AppDelegate));
         }
     }
 }

iOS/packages.config

@@ -79,9 +79,10 @@
   <package id="System.Xml.ReaderWriter" version="4.3.1" targetFramework="xamarinios10" />
   <package id="System.Xml.XDocument" version="4.3.0" targetFramework="xamarinios10" />
   <package id="System.Xml.XmlDocument" version="4.3.0" targetFramework="xamarinios10" />
+  <package id="TcpSharp" version="1.3.6" targetFramework="xamarinios10" />
   <package id="Xamarin.Build.Download" version="0.11.4" targetFramework="xamarinios10" />
   <package id="Xamarin.Essentials" version="1.8.0" targetFramework="xamarinios10" />
   <package id="Xamarin.Forms" version="5.0.0.2622" targetFramework="xamarinios10" />
   <package id="Xamarin.iOS.MaterialComponents" version="92.0.0" targetFramework="xamarinios10" />
-  <package id="Zeroconf" version="3.6.11" targetFramework="xamarinios10" />
+  <package id="Zeroconf" version="3.5.11" targetFramework="xamarinios10" />
 </packages>

iOS/qController.iOS.csproj

@@ -102,9 +102,6 @@
     <Reference Include="System.Xml.Linq" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.IO.Compression" />
-    <Reference Include="Zeroconf">
-      <HintPath>..\packages\Zeroconf.3.6.11\lib\xamarinios10\Zeroconf.dll</HintPath>
-    </Reference>
     <Reference Include="Newtonsoft.Json">
       <HintPath>..\packages\Newtonsoft.Json.13.0.3\lib\netstandard2.0\Newtonsoft.Json.dll</HintPath>
     </Reference>
@@ -166,6 +163,12 @@
     <Reference Include="System.Diagnostics.DiagnosticSource">
       <HintPath>..\packages\System.Diagnostics.DiagnosticSource.7.0.2\lib\netstandard2.0\System.Diagnostics.DiagnosticSource.dll</HintPath>
     </Reference>
+    <Reference Include="Zeroconf">
+      <HintPath>..\packages\Zeroconf.3.5.11\lib\xamarinios10\Zeroconf.dll</HintPath>
+    </Reference>
+    <Reference Include="TcpSharp">
+      <HintPath>..\packages\TcpSharp.1.3.6\lib\netstandard2.1\TcpSharp.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Contents.json">