“远程服务器返回了意外响应：（400）错误请求”

Question

我现在对这个问题感到十分困惑。过去两天我一直在阅读各种文章和博客，并提出了大部分建议的更改，但我仍然遇到这个问题。

基本上我将一个数组对象作为参数从客户端传递给服务，然后给出了上述错误。

我可以处理200条记录，但如果我将其设置为250，则会返回400错误。 我已启用跟踪等，但在出错时根本没有记录任何内容。客户端和服务都在相同的环境（测试目的）-windows 2008r2上运行 我将显示配置文件以及我如何调用该服务。

客户端配置

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <configSections>
  </configSections>
  <system.web>
    <compilation debug="true" targetFramework="4.0"/>
    <httpRuntime  executionTimeout="180" maxRequestLength="2147483647" />
  </system.web>
  <system.serviceModel>
    <bindings>
      <wsHttpBinding>
        <binding name="WSHttpBinding_FinHqclient" closeTimeout="00:25:00"
          openTimeout="00:25:00" receiveTimeout="10:50:00" sendTimeout="00:25:00"
          maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" 
          useDefaultWebProxy="true" allowCookies="false">
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" 
            maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />          
          <security>
            <transport realm="" />
          </security>
        </binding>
      </wsHttpBinding>
      <basicHttpBinding>
        <binding  maxBufferPoolSize="2147483647" name="test" maxBufferSize="2147483647"  maxReceivedMessageSize="2147483647" >
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
            maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
        </binding>
      </basicHttpBinding>
    </bindings>
    <behaviors>
      <endpointBehaviors>
        <behavior name="maxItemsInObjectGraphBehaviour">
          <dataContractSerializer maxItemsInObjectGraph="2147483646" />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <client>
      <endpoint address="http://server:8123/service.svc" behaviorConfiguration="maxItemsInObjectGraphBehaviour"
        binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_FinHqclient"    
        contract="sfgServ.FinHqclient" name="WSHttpBinding_FinHqclient">
        <identity>
          <servicePrincipalName value="host/local" />
        </identity>
      </endpoint>
    </client>    
  </system.serviceModel>
</configuration>

这是服务器配置文件：

<?xml version="1.0"?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />

  </configSections>
  <system.diagnostics>
    <sources>
      <source name="System.ServiceModel"
              switchValue="Information, ActivityTracing"
              propagateActivity="true">
        <listeners>
          <add name="traceListener"
              type="System.Diagnostics.XmlWriterTraceListener"
              initializeData= "c:\log\Traces.svclog" />
        </listeners>
      </source>
    </sources>
  </system.diagnostics>
  <system.web>
    <compilation debug="true" targetFramework="4.0" />    
<httpRuntime  executionTimeout="180" maxRequestLength="2147483647" />
  </system.web>
  <system.serviceModel>
    <diagnostics>
      <messageLogging logEntireMessage="true"  logMalformedMessages="true"
        logMessagesAtServiceLevel="true" logMessagesAtTransportLevel="true" />
    </diagnostics>
    <protocolMapping>
      <add scheme="http" binding="wsHttpBinding"/>
    </protocolMapping>
    <services>
      <service name="SFG.CRM2011.WebServiceFinHqFinHq.Service"  behaviorConfiguration="SFG.CRM2011.WebServiceFinHq.ServiceBehavior">
        <endpoint address="" binding="wsHttpBinding" bindingConfiguration="SFG.CRM2011.WebServiceFinHq.BindConfig"  
                  contract="sfgServ.IClientFinHQ" behaviorConfiguration="SFG.CRM2011.WebServiceFinHq.wsServiceEndpointBehavior">
        </endpoint>
        <endpoint contract="IMetadataExchange" binding="mexHttpBinding" bindingConfiguration="higherMessageSize_MEX" address="mex" />
      </service>
    </services>
    <behaviors>
      <endpointBehaviors>
        <behavior name="SFG.CRM2011.WebServiceFinHq.wsServiceEndpointBehavior">          
          <dataContractSerializer  maxItemsInObjectGraph="2147483646" />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="SFG.CRM2011.WebServiceFinHq.ServiceBehavior">
          <serviceMetadata httpGetEnabled="true" policyVersion="Policy15" />
          <serviceDebug includeExceptionDetailInFaults="true"/>
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
        <behavior >
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true" policyVersion="Policy15"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>      
    </behaviors>    
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
    <bindings>
      <wsHttpBinding >
        <binding name="SFG.CRM2011.WebServiceFinHq.BindConfig"    maxReceivedMessageSize="2147483647" maxBufferPoolSize="2147483647"  >
          <security mode="None">
            <transport clientCredentialType="None" />
            <message establishSecurityContext="false" />
          </security>
          <reliableSession enabled="true" ordered="True" inactivityTimeout="00:10:00" />
          <readerQuotas maxDepth="2147483647"
                         maxStringContentLength="2147483647"
                         maxArrayLength="2147483647"
                         maxBytesPerRead="2147483647"
                         maxNameTableCharCount="2147483647" />
        </binding>        
      </wsHttpBinding>
      <mexHttpBinding>
        <binding name="higherMessageSize_MEX"  />                  
      </mexHttpBinding>
        <basicHttpBinding >
        <binding  maxReceivedMessageSize="2147483647" maxBufferPoolSize="2147483647"  >
          <readerQuotas maxStringContentLength="2147483647" />
        </binding>
      </basicHttpBinding>
    </bindings>
  </system.serviceModel>
 <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
   <security>
     <requestFiltering>
       <requestLimits maxAllowedContentLength="9000000" />
     </requestFiltering>
   </security>
 </system.webServer>
</configuration>

以下是我在客户端中调用此服务的方式......

List<FUMStruct> fList = new List<FUMStruct>();

for (int i = 0; i < 250; i++)
{
    var t = new FUMStruct();
    t.clientID = "1234";
    t.ClientCRMGUID = new Guid("9EACA7AE-FE7E-E211-956A-00505622E202");
    t.CRMAccountCRMGUID = new Guid("A63D9ADC-0CFF-E211-94E9-00505622E202");
    t.Balance = 200 + i;
    fList.Add(t);
}
var serv = new FinHqclientClient();            
serv.UpdateLastFUMGUID(fList.ToArray());

Answer 1

我注意到您为客户端增加了maxRequestLength，但没有为您的服务器增加：

  <system.web>
    <!-- ... -->
    <httpRuntime  executionTimeout="180" maxRequestLength="2147483647" />
  </system.web>

此配置选项实际上仅与服务器相关，因为它设置允许的入站请求大小。在任何情况下，我都会将此部分添加到您的服务器配置文件中，看看是否能解决问题。默认请求大小为4MB，据我所知，这可能会导致您报告的错误。

Answer 2

这是因为绑定中有一个'name'值。因此，我们设置的自定义值没有应用，它正在加载服务器默认值（甚至不确定保留不同绑定的'默认值'！）我通过一篇文章在线阅读并创建了一个新文章只使用基本绑定的服务..它一直失败，直到我删除了名称然后它开始工作！ 然后我必须弄清楚如何为wsHttpBinding做这个，因为使用该绑定，如果你没有指定名称（然后显然你不能引用配置）你得到各种或安全问题等，服务不起作用..所以解决方案是添加另一个没有name属性的绑定。

最后只需要在服务器端进行设置，因为我保留了默认的客户端值（低于上例中的值）并且仍然有效。下面是完整的web.config..note我如何默认basicHttpbinding和wsHttpbinding

<bindings>
      <wsHttpBinding >
        <binding ***name="problemWithValue"***    maxReceivedMessageSize="2147483647" maxBufferPoolSize="2147483647"  >
          <security mode="None">
            <transport clientCredentialType="None" />
            <message establishSecurityContext="false" />
          </security>
          <reliableSession enabled="true" ordered="True" inactivityTimeout="00:10:00" />
          <readerQuotas maxDepth="2147483647"
                         maxStringContentLength="2147483647"
                         maxArrayLength="2147483647"
                         maxBytesPerRead="2147483647"
                         maxNameTableCharCount="2147483647" />
        </binding>
        <binding     maxReceivedMessageSize="2147483647" maxBufferPoolSize="2147483647"  >
          <security mode="None">
            <transport clientCredentialType="None" />
            <message establishSecurityContext="false" />
          </security>
          <reliableSession enabled="true" ordered="True" inactivityTimeout="00:10:00" />
          <readerQuotas maxDepth="2147483647"
                         maxStringContentLength="2147483647"
                         maxArrayLength="2147483647"
                         maxBytesPerRead="2147483647"
                         maxNameTableCharCount="2147483647" />
        </binding>
      </wsHttpBinding>
      <mexHttpBinding>
        <binding name="higherMessageSize_MEX"  />                  
      </mexHttpBinding>
        <basicHttpBinding >
        <binding  maxReceivedMessageSize="2147483647" maxBufferPoolSize="2147483647"  >
          <readerQuotas maxStringContentLength="2147483647" />
        </binding>
      </basicHttpBinding>
    </bindings>