WCF使用MSMQ通信

使用消息队列（Message Queue）可以实现服务端与客户端的异步通信，客户端/服务端 可以在与对方通信断开的情况下将信息保存到MSMQ中
实现如下效果：在不开启服务端的情况下，客户端将信息传入消息队列，当服务器端打开后即可从该消息队列中读取数据，MSMQ支持事务操作

准备条件：需要安装消息队列（控制面板-添加Windows组建-消息队列）

Contract：

    [ServiceContract]
    public  interface IPlusSerOp
    {
        [OperationContract(IsOneWay=true)]//只能使用OneWay，因为MSMQ通信使用的是异步通信，不能获得返回状态
        void Plus(int x);
    }

Host：
behavior

//和普通服务实现类一样
    class ServerPlusOper:IPlusSerOp
    {
        #region IPlusSerOp 成员

        public void Plus(int x)
        {
            Util.ServerOpeMap.add(x.ToString());
        }

        #endregion
    }

宿主

//宿主需要打开MSMQ通道 
       static void startMSMQ()
        {
            string path = @".\WCFService";//此处path需对应address
            if (!MessageQueue.Exists(path))
            {
                MessageQueue.Create(path, true);
            }
            
            using (ServiceHost host = new ServiceHost(typeof(ServerPlusOper)))
            {
                host.Opened += delegate
                {
                    Console.WriteLine("MSMQService start");
                };
                host.Open();
                Console.Read();
                host.Close();

            }
        }

配置文件

    <bindings>
      <netMsmqBinding >
        <binding name="localMSMQ">
          <security>
            <transport msmqAuthenticationMode="None" msmqProtectionLevel="None" />
            <message clientCredentialType="None" />
          </security>
        </binding>
      </netMsmqBinding>
    </bindings>
      <service name="Host.ServerPlusOper">
　　　　　<!--MSMQ的address不能指定端口号-->
        <endpoint address="net.msmq://localhost/WCFService" binding="netMsmqBinding"
                  bindingConfiguration="localMSMQ" contract="Contract.IPlusSerOp"></endpoint>
      </service>

Util

//用于保存服务端数据
    class ServerOpeMap
    {
        private static List<string> ParmsList = new List<string>();
        private static ReaderWriterLockSlim rwlock = new ReaderWriterLockSlim(LockRecursionPolicy.SupportsRecursion);

        public static void add(string parm)
        {
            try
            {
                rwlock.EnterWriteLock();
                ParmsList.Add(parm);
            }
            finally
            {
                rwlock.ExitWriteLock();
            }
            getAll();
        }

        public static void getAll()
        {
            
            try
            {
                rwlock.EnterReadLock();
                foreach (var x in ParmsList)
                {
                    Console.WriteLine("--ut--");
                    Console.WriteLine(x);
                }
            }
            finally
            {
                rwlock.ExitReadLock();
            }
            
        }
    }

客户端：

配置文件（和服务端相同配置）

    <bindings>
      <netMsmqBinding >
        <binding name="localMSMQ">
          <security>
            <transport msmqAuthenticationMode="None" msmqProtectionLevel="None" />
            <message clientCredentialType="None" />
          </security>
        </binding>
      </netMsmqBinding>
    </bindings>
      <endpoint name="msmqBind" address="net.msmq://localhost/WCFService"
                binding="netMsmqBinding" bindingConfiguration="localMSMQ" 
                contract="Contract.IPlusSerOp"></endpoint>

访问服务

        static void MsmqSer()
        {
            ChannelFactory<IPlusSerOp> factory = new ChannelFactory<IPlusSerOp>("msmqBind");
            IPlusSerOp service = factory.CreateChannel();
            //MSMQ支持使用事务
            using (TransactionScope tra = new TransactionScope())
            {
                service.Plus(1);
                tra.Complete();
            }
        }