Beetle简单实现Flash,Silverlight的policy Server

    最近要针对Flash和Silverlight写一些Socket通讯的用例，由于这两者的Socket出于安全性考虑都需要一个Prolicy Server.在网上找了一下发现都只是代码没有相关程序直接用，于是就用Beetle实现了Flash和Silverlight的policy Server,使用的时候根据情况配置开启Flash或Silverlight.如果需要两者同时可以打开，以下简单地介绍实现过程。

　首先我们必须知道Flash和Silverlight信任文件是怎样的.

   Flash

<cross-domain-policy>
  <site-control permitted-cross-domain-policies="master-only"/>
  <allow-access-from domain="*" to-ports="*" secure="false"/>
</cross-domain-policy>

   Silverlight

<?xml version="1.0" encoding="utf-8" ?>
<access-policy>
  <cross-domain-access>
    <policy>
      <allow-from>
        <domain uri="*"/>
      </allow-from>
      <grant-to>
        <socket-resource port="4502-4534" protocol="tcp"/>
      </grant-to>
    </policy>
  </cross-domain-access>
</access-policy>

  两者的工作方式分别是Flash请求843端口，而Silverlight则是943;服务端在接收请求信息，根据不情况返回实际信任ＸＭＬ信息即可。以下是基于Beetle的简单服务实现。

class Program:ServerBase
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Silverlight and Flash Prolicy Server Copyright @ Kender 2012");
            Console.WriteLine("website:www.ikender.com");
            Console.WriteLine("email:henryfan@msn.com");
            Console.WriteLine("qq:28304340");
            Beetle.TcpUtils.Setup("beetle");
            if (ProlicySection.Instance.FlashEnabled)
            {
                Program flashprolicy = new Program();
                flashprolicy.Type = ProlicyType.Flash;
                flashprolicy.Open(ProlicySection.Instance.FlashPort);
                Console.WriteLine("Start Flash Prolicy Server @" + ProlicySection.Instance.FlashPort);
            }
            if (ProlicySection.Instance.SLEnabled)
            {
                Program flashprolicy = new Program();
                flashprolicy.Type = ProlicyType.Silverlight;
                flashprolicy.Open(ProlicySection.Instance.SLPort);
                Console.WriteLine("Start Silverlight Prolicy Server @" + ProlicySection.Instance.SLPort);
            }
            Console.Read();
        }
        public ProlicyType Type
        {
            get;
            set;
        }
        public enum ProlicyType
        {
            Flash,
            Silverlight
        }
        protected override void OnConnected(object sender, ChannelEventArgs e)
        {
            base.OnConnected(sender, e);
            e.Channel.EnabledSendCompeletedEvent = true;
            e.Channel.SendMessageCompleted = (o, m) => { m.Channel.Dispose(); };
            Console.WriteLine("{0} connected!", e.Channel.EndPoint);
        }
        protected override void OnDisposed(object sender, ChannelDisposedEventArgs e)
        {
            base.OnDisposed(sender, e);
            Console.WriteLine("{0} disposed!", e.Channel.EndPoint);
        }
        protected override void OnError(object sender, ChannelErrorEventArgs e)
        {
            base.OnError(sender, e);
            Console.WriteLine("{0} error {1}!", e.Channel.EndPoint,e.Exception.Message);
        }
        protected override void OnReceive(object sender, ChannelReceiveEventArgs e)
        {
            base.OnReceive(sender, e);
            Console.WriteLine(e.Channel.Coding.GetString(e.Data.Array, e.Data.Offset, e.Data.Count));
            StringMessage message = new StringMessage();
            if (Type == ProlicyType.Flash)
            {
                message.Value = Utils.GetFlashPolicy();
            }
            else
            {
                message.Value = Utils.GetSLPolicy();
            }
            e.Channel.Send(message);
        }
    }

　　Program对象继承ServerBase然后重写几个相关方法，在OnReceive事件里根据当前Server的不同类型进行一个信任文件输出即可.Utils类主要封装信任文件信息的读取，代码如下:

 class Utils
    {
        static string mSLPolicy = null;
        static string mFlashPolicy = null;
        public static string GetSLPolicy()
        {
            if (mSLPolicy == null)
            {
                string filename = AppDomain.CurrentDomain.BaseDirectory + "SLPolicy.xml";
                using (System.IO.StreamReader reader = new System.IO.StreamReader(filename, Encoding.UTF8))
                {
                    mSLPolicy= reader.ReadToEnd();
                }
            }
            return mSLPolicy;
        }
        public static string GetFlashPolicy()
        {
            if (mFlashPolicy == null)
            {
                string filename = AppDomain.CurrentDomain.BaseDirectory + "FlashPolicy.xml";
                using (System.IO.StreamReader reader = new System.IO.StreamReader(filename, Encoding.UTF8))
                {
                    mFlashPolicy= reader.ReadToEnd() + "\0";
                }
            }
            return mFlashPolicy;
        }
    }

这样一个同时支持Flash和Silverlight的policy Server就完成了，是不是很简单。

下载这个小工具