解决2003系统加入组播报错的问题

Mozi.SSDP.Test/Program.cs

@@ -19,6 +19,7 @@ namespace Mozi.SSDP.Test
                     {
                         if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                         {
+                            Console.WriteLine("interface:{0}:{1}", r.Name, ip.Address);
                             SSDPService ssdp = new SSDPService();
                             ssdp.MulticastAddress = "239.255.255.250";
                             ssdp.BindingAddress = ip.Address;

Mozi.SSDP/Mozi.SSDP.csproj

@@ -11,6 +11,8 @@
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
+    <TargetFrameworkProfile>
+    </TargetFrameworkProfile>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>

Mozi.SSDP/UDPSocket.cs

@@ -131,10 +131,10 @@ namespace Mozi.SSDP
             _sc.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
             _sc.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 10);
             _sc.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastInterface, 0);
-
+            //先绑定 后加入组播，否则XP/2003系统下会报错
+            _sc.Bind(endpoint);
             _sc.MulticastLoopback = AllowLoopbackMessage;
             JoinMulticastGroup(multicastGroupAddress);
-            _sc.Bind(endpoint);
 
             //回调服务器启动事件
             UDPStateObject so = new UDPStateObject()