如何在 Windows 服务中使用 .net.tcp 绑定托管两个 WCF 服务

Question

我想托管两个服务

1. 服务 1（位于 D 驱动器上） 基于 xml 中配置的配置处理数据 net.tcp://ServerIP/Pune_service
2. 服务 2（位于 E 驱动器上） 基于 xml 中配置的配置处理数据 net.tcp://ServerIP/Mumbai_service

现在我尝试在两个不同的 Windows 服务中使用 net.tcp 绑定来托管这些服务 Windows 服务 1 启动成功 但是当试图启动第二个 Windows 服务时，我得到了错误，即 AddressAlreadyInUseException

  string httpBaseAddress = "http://" + _szServerIP + "/" + _szCurruntLocation + "_FileServer";
                string tcpBaseAddress = "net.tcp://" + _szServerIP + "/" + _szCurruntLocation + "_FileServer";


                Uri[] adrbase = { new Uri(httpBaseAddress), new Uri(tcpBaseAddress) };
                m_svcHost = new ServiceHost(typeof(MyService.CalcServiceClient), adrbase);

                ServiceMetadataBehavior mBehave = new ServiceMetadataBehavior();
                //mBehave.AddressFilterMode=AddressFilterMode.Any)]
                m_svcHost.Description.Behaviors.Add(mBehave);

                BasicHttpBinding httpb = new BasicHttpBinding();
                m_svcHost.AddServiceEndpoint(typeof(MyService.ICalcService), httpb, httpBaseAddress);
                m_svcHost.AddServiceEndpoint(typeof(IMetadataExchange), MetadataExchangeBindings.CreateMexHttpBinding(), "mex");


                NetTcpBinding tcpb = new NetTcpBinding();
                tcpb.MaxConnections = 10;
                tcpb.MaxReceivedMessageSize = Int32.MaxValue;
                tcpb.MaxBufferPoolSize = Int32.MaxValue;
                tcpb.MaxBufferSize = Int32.MaxValue;
                tcpb.ReceiveTimeout = new TimeSpan(0, 10, 0);
                tcpb.OpenTimeout = new TimeSpan(0, 10, 0);
                tcpb.CloseTimeout = new TimeSpan(0, 10, 0);
                tcpb.PortSharingEnabled = true;

                m_svcHost.AddServiceEndpoint(typeof(MyService.ICalcService), tcpb, tcpBaseAddress);
                m_svcHost.AddServiceEndpoint(typeof(IMetadataExchange), MetadataExchangeBindings.CreateMexTcpBinding(), "mex");
                m_svcHost.Open();


                Console.WriteLine("Service is live now at : {0}", httpBaseAddress);
                Console.ReadLine();

Answer 1

这是 AddressAlreadyInUseException 的link。

我认为你可以删除；

m_svcHost.AddServiceEndpoint(typeof(IMetadataExchange), MetadataExchangeBindings.CreateMexTcpBinding(), "mex");

您正在尝试为 tcp 绑定添加第二个 IMetadataExchange 合同。

还需要添加；

mBehave.HttpGetEnabled = true;

获取墨西哥信息。

Answer 2

据我所知，MexTcpBinding 禁用端口共享。这意味着：

Binding mexBinding = MetadataExchangeBindings.CreateMexTcpBinding();
CustomBinding mexBinding2 = new CustomBinding(mexBinding);
mexBinding2.Elements.Find<TcpTransportBindingElement>().PortSharingEnabled==false //true

这是一篇值得一读的文章。
https://blogs.msdn.microsoft.com/drnick/2006/08/23/an-unanticipated-addendum-for-certain-mex-scenarios/
我建议您可以编写自定义绑定，然后将绑定添加到 mex 端点。

TextMessageEncodingBindingElement encoding = new TextMessageEncodingBindingElement();
            TcpTransportBindingElement transport = new TcpTransportBindingElement();
            transport.PortSharingEnabled = true;
            CustomBinding binding1 = new CustomBinding(encoding, transport);
            m_svcHost.AddServiceEndpoint(typeof(IService), tcpb, tcpBaseAddress);
            m_svcHost.AddServiceEndpoint(typeof(IMetadataExchange), binding1, "mex");

这里是关于这个主题的相关问题。

https://blogs.msdn.microsoft.com/praburaj/2012/10/16/nettcpbinding-mextcpbinding-sharing-same-port-throws-addressalreadyinuseexception-on-upgrade-to-net-4-5/

您还可以注释以下行以确保代码正确运行。

tcpb.MaxConnections = 10;
tcpb.PortSharingEnabled = true;