如何动态调用net.tcp Web服务

Question

我试图从我的C#桌面应用程序调用一个WCF，但我得到了一个错误。这是我的密码：

//Client Code
System.ServiceModel.EndpointAddress addressSync = new System.ServiceModel.EndpointAddress("net.tcp://an ip address/Sync2.svc");
Shared.FactorySync = new System.ServiceModel.ChannelFactory<LiteEdition.wsSyncFastest.ISync2Channel>("NetTcpBinding_ISync2", addressSync);
Shared.UpLoadSync = Shared.FactorySync.CreateChannel();

问题。如果我动态地创建一个对WCF的客户端调用，我可以假设我不需要在app.config文件中包含任何有关绑定？的内容。

//error message on this line:
Shared.UpLoadSync.UploadMotionDynamic2(new byte[1]{0}, 0, 0);

//IS:
The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:00:59.9349963'

。

//My Service:
public void UploadMotionDynamic2(byte[] jpegData, int status, int framePart)
{
    DAL dal = new DAL();
    try
    {
        if (jpegData != null)
    {
            LiveView2.SetNewFrame(status, framePart, jpegData);            
    }
    }
    catch (Exception ex)
    {
        email.SendError("Sync.UploadMotionDynamic:" + ex.ToString(), "");
    }
}

//In my Web.Config
 <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="NetTCPBehaviour">
          <serviceTimeouts transactionTimeout="0.00:00:30" />
          <serviceDebug includeExceptionDetailInFaults="false" />
          <dataContractSerializer maxItemsInObjectGraph="65536" />
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
        <behavior name="">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service name="testme" behaviorConfiguration="NetTCPBehaviour">
        <endpoint  address="Sync2.svc" binding="netTcpBinding" contract="ISync" name="wsMotionUploader" bindingConfiguration="NetTCPBindingEndPoint">
          <!--<security mode="None"></security>-->
        </endpoint>
      </service>
    </services>
    <bindings>
      <netTcpBinding>
        <binding  name="NetTCPBindingEndPoint" receiveTimeout="00:15:00" sendTimeout="00:15:00" transferMode="Streamed" closeTimeout="00:02:00" openTimeout="00:02:00" 
            maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" maxBufferSize="2147483647">
          <readerQuotas maxArrayLength="32768" />
          <security mode="None">
            <transport clientCredentialType="None" protectionLevel="None" />
            <message clientCredentialType="None" />
          </security>
        </binding>
      </netTcpBinding>
    </bindings>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel> 

经修订的守则：

            System.ServiceModel.NetTcpBinding binding = new System.ServiceModel.NetTcpBinding();
            System.ServiceModel.EndpointAddress address = new System.ServiceModel.EndpointAddress("http:ip/Sync2");

            System.ServiceModel.ChannelFactory<System.ServiceModel.Channels.IRequestChannel> factory =
                new System.ServiceModel.ChannelFactory<System.ServiceModel.Channels.IRequestChannel>(binding, address);

            var channel = factory.CreateChannel();
            channel.Open();

更新如下：

            System.ServiceModel.NetTcpBinding binding = new System.ServiceModel.NetTcpBinding();                
            System.ServiceModel.EndpointAddress address = new System.ServiceModel.EndpointAddress("net.tcp://ip/Sync2");
            System.ServiceModel.ChannelFactory<WindowsFormsApplication2.ws.ISync2Channel> factory =
                new System.ServiceModel.ChannelFactory<WindowsFormsApplication2.ws.ISync2Channel>(binding, address);
            factory.Endpoint.Contract.SessionMode = System.ServiceModel.SessionMode.Allowed;
            WindowsFormsApplication2.ws.ISync2Channel channel = factory.CreateChannel();
            channel.Open();

但是，获取此错误“对象引用未设置为对象的实例”。

在.Open()方法上。

此外，定义'WindowsFormsApplication2.ws.ISync2Channel‘是因为我已经添加了对服务的引用。如果我没有，我会用什么代替？

//*新设置：

Client code:

ws.Sync2Client wcf = new ws.Sync2Client("NetTcpBinding_ISync2");
wcf.UploadMotionDynamic2(new byte[1]{1},0,0);

Client App.Config:
    <system.serviceModel>
        <bindings>
            <basicHttpBinding>
                <binding name="BasicHttpBinding_ISync2" />
            </basicHttpBinding>
            <netTcpBinding>
                <binding name="NetTcpBinding_ISync2" />
            </netTcpBinding>
        </bindings>
        <client>
            <endpoint address="http://ip/Sync2.svc"
                binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ISync2"
                contract="ws.ISync2" name="BasicHttpBinding_ISync2" />
            <endpoint address="net.tcp://ip/Sync2.svc" binding="netTcpBinding"
                bindingConfiguration="NetTcpBinding_ISync2" contract="ws.ISync2"
                name="NetTcpBinding_ISync2">
                <identity>
                    <servicePrincipalName value="host/ip" />
                </identity>
            </endpoint>
        </client>
    </system.serviceModel>

服务器Web.Config

                             -->                                                                                                                                                                                                                                                                                      

我得到的错误在这条线上：

wcf.UploadMotionDynamic2(new byte[1]{1},0,0);

错误是:对象引用未设置为对象的实例。堆栈是：

服务器堆栈跟踪:在System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri，TimeSpan超时值)在System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri，( System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan超时)在System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan超时( System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan超时值) System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan超时值( System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan超时值) System.ServiceModel.Channels.ServiceChannel.CallOpenOnce.System.ServiceModel.Channels.ServiceChannel.ICallOnce.Call(ServiceChannel通道) TimeSpan超时( System.ServiceModel.Channels.ServiceChannel.CallOnceManager.CallOnce(TimeSpan超时)，(在System.ServiceModel.Channels.ServiceChannel.EnsureOpened(TimeSpan超时值))( System.ServiceModel.Channels.ServiceChannel.Call(String动作，布尔单向，ProxyOperationRuntime操作，Object[] ins，Object[]，TimeSpan超时值)在System.ServiceModel.Channels.ServiceChannel.Call(String动作，布尔单向，ProxyOperationRuntime操作，Object[] ins，Object[] outs)在System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall，ProxyOperationRuntime操作)在System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage消息))

异常重抛于: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg，IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData，Int32 type) at WindowsFormsApplication2.ws.ISync2.UploadMotionDynamic2(Byte[] jpegData，Int32 status，Int32 framePart) at WindowsFormsApplication2.ws.Sync2Client.UploadMotionDynamic2(Byte[] jpegData，Int32 status，Int32 framePart)在m:\Visual Studio 2013\Projects\WindowsFormsApplication2\WindowsFormsApplication2\Service 2013\Projects\WindowsFormsApplication2\WindowsFormsApplication2\Service 81 at发件人处，( m:\Visual Studio 2013\Projects\WindowsFormsApplication2\WindowsFormsApplication2\Form1.cs:line 581中的EventArgs e)

不过，当我使用http绑定时，所有这些都能工作.

端口780在我的服务器上是打开的。IIS中的Net.Tcp.Listener适配器正在运行已启用的协议net.tcp

仍然没有joy

Answer 1

看起来您对需求使用了错误的构造函数。当使用ChannelFactory(String，EndpointAddress)构造函数时，第一个参数表示端点配置的名称(在配置文件中)。

使用ChannelFactory(绑定，EndpointAddress)构造函数将满足以编程方式传递配置的要求。

如果希望以编程方式传递绑定和地址信息，而不是使用应用程序配置文件，请使用此构造函数。

Answer 2

您可以使用ChannelFactory类来调用wcf服务，在这种情况下，您不需要在配置文件中有端点和绑定。您可以在c#中创建的所有内容(端点、行为)如下所示

var channelFactory = new ChannelFactory<IService>(new BasicHttpBinding(), "http://myurl:8080/ServiceFirst");
IService client = channelFactory.CreateChannel();

查看这个链接http://msdn.microsoft.com/en-us/library/ms734681(v=vs.110).aspx