最近在弄WCF的过程中，想添加service reference，但是报以下错误。

There was an error downloading 'http://localhost:3502/ServiceHost/Sample/Calculator.svc'.The server committed a protocol violation. Section=ResponseStatusLineMetadata contains a reference that cannot be resolved: 'http://localhost:3502/ServiceHost/Sample/Calculator.svc'.The server committed a protocol violation. Section=ResponseStatusLineThe server committed a protocol violation. Section=ResponseStatusLine

下面为报错截图：

一直报这个错，不知道怎么回事，首先在网上查

The server committed a protocol violation. Section=ResponseStatusLine；网上的一种解决方案是：

<system.net>
<settings>
<httpWebRequest useUnsafeHeaderParsing="true" />
</settings>
</system.net>

但是在web.config中配置后，仍然不能解决。求解，为什么会报这种错误。

补充：

ICalculator.cs类：

namespace WCF.ServiceLib.Sample
{
    [ServiceContract]
    public interface ICalculator
    {
        [OperationContract]
        double Add(double x, double y);
    }
}


 
Calculator.cs类：

namespace WCF.ServiceLib.Sample
{
    public class Calculator : ICalculator
    {
        public double Add(double x, double y)
        {
            return x + y;
        }
    }
}

 
web.config配置：

<?xml version="1.0"?>
<configuration>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name ="CalculatorBehavior">
          <serviceMetadata httpGetEnabled="true"/>          
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <!--name - 提供服务的类名-->
      <!--behaviorConfiguration - 指定相关的行为配置-->
      <service name="WCF.ServiceLib.Sample.Calculator" behaviorConfiguration="CalculatorBehavior">
        <!--address - 服务地址-->
        <!--binding - 通信方式-->
        <!--contract - 服务契约-->
        <endpoint address="" binding="basicHttpBinding" contract="WCF.ServiceLib.Sample.ICalculator" />
      </service>
    </services>
  </system.serviceModel>
</configuration>


 
这个就是我的Web Service相关文件，直接运行结果图

运行都是正确的，就是不能添加service reference服务。

单击之后能返回完整的服务描述。如下：
<?xml version="1.0" encoding="utf-8" ?> 
- <wsdl:definitions name="Calculator" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:tns="http://tempuri.org/" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsap="http://schemas.xmlsoap.org/ws/2004/08/addressing/policy" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:msc="http://schemas.microsoft.com/ws/2005/12/wsdl/contract" xmlns:wsa10="http://www.w3.org/2005/08/addressing" xmlns:wsx="http://schemas.xmlsoap.org/ws/2004/09/mex" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata">
- <wsdl:types>
- <xsd:schema targetNamespace="http://tempuri.org/Imports">
  <xsd:import schemaLocation="http://localhost:3502/ServiceHost/Sample/Calculator.svc?xsd=xsd0" namespace="http://tempuri.org/" /> 
  <xsd:import schemaLocation="http://localhost:3502/ServiceHost/Sample/Calculator.svc?xsd=xsd1" namespace="http://schemas.microsoft.com/2003/10/Serialization/" /> 
  </xsd:schema>
  </wsdl:types>
- <wsdl:message name="ICalculator_Add_InputMessage">
  <wsdl:part name="parameters" element="tns:Add" /> 
  </wsdl:message>
- <wsdl:message name="ICalculator_Add_OutputMessage">
  <wsdl:part name="parameters" element="tns:AddResponse" /> 
  </wsdl:message>
- <wsdl:portType name="ICalculator">
- <wsdl:operation name="Add">
  <wsdl:input wsaw:Action="http://tempuri.org/ICalculator/Add" message="tns:ICalculator_Add_InputMessage" /> 
  <wsdl:output wsaw:Action="http://tempuri.org/ICalculator/AddResponse" message="tns:ICalculator_Add_OutputMessage" /> 
  </wsdl:operation>
  </wsdl:portType>
- <wsdl:binding name="BasicHttpBinding_ICalculator" type="tns:ICalculator">
  <soap:binding transport="http://schemas.xmlsoap.org/soap/http" /> 
- <wsdl:operation name="Add">
  <soap:operation soapAction="http://tempuri.org/ICalculator/Add" style="document" /> 
- <wsdl:input>
  <soap:body use="literal" /> 
  </wsdl:input>
- <wsdl:output>
  <soap:body use="literal" /> 
  </wsdl:output>
  </wsdl:operation>
  </wsdl:binding>
- <wsdl:service name="Calculator">
- <wsdl:port name="BasicHttpBinding_ICalculator" binding="tns:BasicHttpBinding_ICalculator">
  <soap:address location="http://localhost:3502/ServiceHost/Sample/Calculator.svc" /> 
  </wsdl:port>
  </wsdl:service>
  </wsdl:definitions>