Question

我很难尝试公开多个WCF服务。我在我的服务器控制台应用程序中托管WCF服务，运行应用程序后，我可以成功打开ServiceHost端点。我成功地为一个客户端添加了WCFTestService引用，但是当我尝试为另一个客户端添加WCFTestService2引用（右键单击引用 - >添加服务引用 - ＆gt;查找服务并单击确定）时得到奇怪的错误：

System.ServiceModel.AddressAlreadyInUseException: Receiver already exists at the endpoint IP 0.0.0.0:8523. It could happen so if another application listens at this endpoint or service host contains many endpoints of services with the same endpoint IP but with invalid binding configurations---> System.Net.Sockets.SocketException: Only one usage of each socket address (protocol/address/port) is normally allowed
   in System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot, SocketAddress socketAddress)
   in System.Net.Sockets.Socket.Bind(EndPoint localEP)
   in System.ServiceModel.Channels.SocketConnectionListener.Listen()
   --- End of inner exceptions stack trace ---
   in System.ServiceModel.Channels.SocketConnectionListener.Listen()
   in System.ServiceModel.Channels.ExclusiveTcpTransportManager.OnOpen()
   in System.ServiceModel.Channels.TransportManager.Open(TransportChannelListener channelListener)
   in System.ServiceModel.Channels.TransportManagerContainer.Open(SelectTransportManagersCallback selectTransportManagerCallback)
   in System.ServiceModel.Channels.TransportChannelListener.OnOpen(TimeSpan timeout)
   in System.ServiceModel.Channels.ConnectionOrientedTransportChannelListener.OnOpen(TimeSpan timeout)
   in System.ServiceModel.Channels.TcpChannelListener`2.OnOpen(TimeSpan timeout)
   in System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   w System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan timeout)
   in System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   in System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)
   in System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   in Microsoft.Tools.SvcHost.ServiceHostHelper.OpenService(ServiceInfo info)
System.Net.Sockets.SocketException (0x80004005): Tylko jedno użycie każdego adresu gniazda (protokół/adres sieciowy/port) jest normalnie dozwolone
   in System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot, SocketAddress socketAddress)
   in System.Net.Sockets.Socket.Bind(EndPoint localEP)
   in System.ServiceModel.Channels.SocketConnectionListener.Listen()

我的主机控制台应用：

static void Main(string[] args)
        {
            try
            {
                ServiceHost selfHost = new ServiceHost(typeof(contractImplementation1), new Uri("net.tcp://localhost:8523/WCFTestService"));
                selfHost.Open();
                selfHost = new ServiceHost(typeof(contractImplementation2), new Uri("net.tcp://localhost:8523/WCFTestService2"));
                selfHost.Open();

                Console.WriteLine();
                Console.WriteLine("Press <ENTER> to terminate service.");
                Console.WriteLine();
                Console.ReadLine();
            }
            catch (CommunicationException ce)
            {
                Console.WriteLine("An exception occurred: {0}", ce.Message);
            }
        }

的app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <behaviors>
            <serviceBehaviors>
                <behavior name="WCFServices.MyServiceBehavior">
                    <serviceMetadata httpGetEnabled="false" httpsGetEnabled="false" />
                    <serviceDebug includeExceptionDetailInFaults="false" />
                </behavior>
            </serviceBehaviors>
        </behaviors>
        <services>
            <service behaviorConfiguration="WCFServices.MyServiceBehavior"
                name="WcfServices.contractImplementation1">
                <endpoint address="" binding="netTcpBinding" bindingConfiguration=""
                    name="NetTcpBindingEndpoint" contract="WcfServices.IcontractImplementation1">
                    <identity>
                        <dns value="localhost" />
                    </identity>
                </endpoint>
                <endpoint address="mex" binding="mexTcpBinding" bindingConfiguration=""
                    name="MexTcpBindingEndpoint" contract="IMetadataExchange" />
                <host>
                    <baseAddresses>
                        <add baseAddress="net.tcp://localhost:8523/WCFTestService" />
                    </baseAddresses>
                </host>
            </service>
            <service behaviorConfiguration="WCFServices.MyServiceBehavior"
                name="WcfServices.contractImplementation2">
                <endpoint address="" binding="netTcpBinding" bindingConfiguration=""
                    contract="WcfServices.IcontractImplementation2">
                    <identity>
                        <dns value="localhost" />
                    </identity>
                </endpoint>
                <endpoint address="mex" binding="mexTcpBinding" bindingConfiguration=""
                    contract="IMetadataExchange" />
                <host>
                    <baseAddresses>
                        <add baseAddress="net.tcp://localhost:8523/WCFTestService2" />
                    </baseAddresses>
                </host>
            </service>
        </services>
    </system.serviceModel>
</configuration>

如果有人能指出我解决问题的方向，我将非常感激。

Answer 1

您正尝试在同一端口上打开两个服务主机，这是不可能的。每个服务必须位于一个唯一的端口上（并且不与任何其他被占用的端口冲突）。

更改您的端口号，例如将第二个端点更改为端口8524.

        ServiceHost selfHost = new ServiceHost(typeof(contractImplementation1), 
               new Uri("net.tcp://localhost:8523/WCFTestService"));
        selfHost.Open();

        selfHost = new ServiceHost(typeof(contractImplementation2), 
             new Uri("net.tcp://localhost:8524/WCFTestService2"));
        selfHost.Open();

WCF - 使用NetTcpBinding设置多个WCF服务

1 个答案: