Fix port range check and move Sip003Plugin.

shadowsocks-csharp/Controller/Service/Sip003Plugin.cs

@@ -6,7 +6,7 @@ using System.Net.Sockets;
 using System.Reflection;
 using Shadowsocks.Model;
 
-namespace Shadowsocks.Proxy
+namespace Shadowsocks.Controller.Service
 {
     // https://github.com/shadowsocks/shadowsocks-org/wiki/Plugin
     public sealed class Sip003Plugin : IDisposable
@@ -41,7 +41,7 @@ namespace Shadowsocks.Proxy
             {
                 throw new ArgumentException("Value cannot be null or whitespace.", nameof(serverAddress));
             }
-            if ((uint)serverPort != serverPort)
+            if ((ushort)serverPort != serverPort)
             {
                 throw new ArgumentOutOfRangeException("serverPort");
             }

shadowsocks-csharp/Controller/ShadowsocksController.cs

@@ -15,6 +15,7 @@ using Shadowsocks.Model;
 using Shadowsocks.Properties;
 using Shadowsocks.Util;
 using System.Linq;
+using Shadowsocks.Controller.Service;
 using Shadowsocks.Proxy;
 
 namespace Shadowsocks.Controller

shadowsocks-csharp/shadowsocks-csharp.csproj

@@ -145,7 +145,7 @@
     <Compile Include="Controller\Strategy\BalancingStrategy.cs" />
     <Compile Include="Controller\Strategy\StrategyManager.cs" />
     <Compile Include="Controller\Strategy\IStrategy.cs" />
-    <Compile Include="Proxy\Sip003Plugin.cs" />
+    <Compile Include="Controller\Service\Sip003Plugin.cs" />
     <Compile Include="Proxy\Socks5Proxy.cs" />
     <Compile Include="Settings.cs" />
     <Compile Include="StringEx.cs" />