Question

我有一个项目，我正在尝试通过TCP传输实现一个简单的WCF服务。这是下面共享的服务端代码。

using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.Text;
using System.Threading.Tasks;

namespace HwWcfService
{
    class Program
    {
        static void Main(string[] args)
        {


            string Uri = string.Format("net.tcp://localhost:8000/TelemetryProviderService");
            ServiceHost host = new ServiceHost(
                    typeof(Calculator),
                    new Uri(Uri)
                    );


            NetTcpBinding binding = new NetTcpBinding(SecurityMode.None);                
            host.AddServiceEndpoint(
                typeof(ICalc),
                binding,
                "CalcService");

            host.Open();

            Console.WriteLine("Done starting the new endpoint...");
            Console.ReadKey();

        }
    }



    class Calculator :ICalc
    {

        public int Add(int x, int y)
        {
            Console.WriteLine(x + " " + y);
            return x + y;
        }
    }
}





namespace HwWcfService
{
    [ServiceContract(
        Namespace="HwWcfService"
    )]
    interface ICalc
    {

        [OperationContract]
        int Add(int x, int y);
    }
}

App.Config文件如下所示：

<?xml version="1.0" encoding="utf-8"?>
<configuration>

    <system.serviceModel>
      <services>
        <service behaviorConfiguration="ServiceBehaviour" name="HwWcfService.Calculator">
          <endpoint address="net.tcp://localhost:8000/TelemetryProviderService" 
                    name="TelemetryProviderService"
                    contract="HwWcfService.ICalc"
                    binding="netTcpBinding"  
                    bindingConfiguration="calcTcpBindingConfiguration"
                    behaviorConfiguration="epBehaviourConfig"
                    />

          <endpoint address="net.tcp://localhost:8000/TelemetryProviderServiceMex"
                    name ="TelemetryProviderServiceMex"
                    binding="mexTcpBinding"
                    contract="HwWcfService.ICalc"
                    listenUriMode="Explicit"
                    />
        </service>
      </services>

      <bindings>
        <netTcpBinding>
          <binding name="calcTcpBindingConfiguration" closeTimeout="00:02:00"/>
        </netTcpBinding>
      </bindings>


      <behaviors>

        <endpointBehaviors>
          <behavior name="epBehaviourConfig">
          </behavior>
        </endpointBehaviors>

        <serviceBehaviors>
          <behavior name="ServiceBehaviour">
            <serviceMetadata httpGetUrl="false" httpGetEnabled="false"/>
          </behavior>
        </serviceBehaviors>

      </behaviors>

    </system.serviceModel>
</configuration>

当我运行svcutil.exe查询所有参数时，我收到错误：错误：无法从net.tcp获取元数据：// localhost：8000 / TelemetryProviderService

如果这是您有权访问的Windows（R）Communication Foundation服务，请检查您是否已启用了spe的元数据发布地址。有关启用元数据发布的帮助，请参阅http://go.microsoft.com/fwlink/?LinkId=65455上的MSDN文档。

WS-Metadata Exchange错误 URI：net.tcp：// localhost：8000 / TelemetryProviderService

Metadata contains a reference that cannot be resolved: 'net.tcp://localhost:8000/TelemetryProviderService'.

The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote hos

，或潜在的网络资源问题。本地套接字超时为'00：04：59.9929977'。

An existing connection was forcibly closed by the remote host

有谁知道我为什么会收到这个错误？

Answer 1

<serviceMetadata httpGetUrl="false" httpGetEnabled="false"/>

您需要将这两个设置为true才能让svcutil.exe能够查询您的服务。

来自svcutil.exe上的MSDN：

使用Svcutil访问具有引用的WSDL文档时安全令牌服务（STS），Svcutil生成WS-MetadataExchange 打电话给STS。但是，该服务可以公开其WSDL文档使用WS-MetadataExchange或HTTP GET。因此，如果是STS 只使用HTTP GET（一个写入的客户端）公开了WSDL文档 WinFX会失败。对于使用.NET Framework 3.5编写的客户端，Svcutil 将尝试使用WS-MetadataExchange和HTTP GET来获取 STS WSDL。

修改：还要检查<serviceMetadata/>的MSDN，您需要将其更改为以下内容：

<serviceMetadata httpGetEnabled="false"/>

默认情况下，您不能通过端点地址访问Web服务的WSDL，但在URL中包含“？wsdl”。

链接：MSDN <serviceMetadata> Element Documentation

使用svcutil解决WCF（net.tcp）端点发现问题

1 个答案: