试图添加在一个项目中错误请求（400）的服务引用的结果，否则运行良好 [英] Trying to add a service reference results in Bad Request (400) in one project, otherwise runs fine

问题描述

我在一个微妙的局面：正如标题所暗示的，我似乎无法连接到WCF服务我在Windows服务包裹起来。我跟着教程 http://msdn.microsoft .COM / EN-US /库/ ms733069％28V = vs.110％29.aspx 的每一步，得到它的工作的多次的这种具体的方式，只是不适合的有一个的具体项目。我真的不知道它是什么，我有一个非常简单的接口只有一个方法的合同，我的服务已安装就好了，也开始就好了。有一次，我尝试在另一个项目中添加一个服务引用我得到一个错误400，错误请求和元数据的问题。
我甚至改写了工程样机（它基本上与合同的履行少code中的同一个项目，但我们谈论仍低于300线code）的跑完全正常，并得出了同样的错误。我没有改变任何的的app.config code，当我这样做，我可以前连接，但错误的请求之后。

I'm in a delicate situation: As the title suggests, I can't seem to connect to a WCF service I wrapped up in a Windows Service. I followed the tutorial http://msdn.microsoft.com/en-us/library/ms733069%28v=vs.110%29.aspx every step and got it to work multiple times in this exact way, just not for one particular project. I really don't know what it is, I have a very simple interface with just one method as contract, my service is installed just fine and also starts just fine. Once I try to add a service reference in another project I get an error 400, Bad Request, and a metadata problem. I even rewrote the prototype project (it's basically the same project with less code in the implementation of the contract; but we're talking still below 300 lines of code) which ran perfectly fine, and came to the same error. I didn't change any of the app.config code when I did that, and I could connect before, but bad request afterwards.

什么增加的问题是，我不能发表任何code在这里（我工作的一个虚拟机在那里我没有上网的工作，再加上互联网其实我对物理机是如此的限制，我不能打开任何类型板/论坛/博客/什么的，所以我不能确切的发布错误）。因为我所有的例子极少做的工作，我的最小不工作的例子将是总code无妨。

What adds to the problem is that I can't post any code here (I'm working on a VM at work where I don't have internet access, plus the internet access I actually do have on the physical machine is so restricted I can't open any kind of board/forum/blog/whatever, so I can't post exact errors). Since all my minimal examples do work, my "minimal not working example" would be the total code anyway.

我在这里全盘损失。我在错误的请求错误的所有其他议题挖有更多的一些检查，明天做，但我想我宁愿只是张贴在这里，也许在得到一些建议什么/如何进一步测试我的项目有错误。
万一有帮助，在的app.config 是相同的下面除了服务及合同名：

I'm at a total loss here. I dug through all the other topics of the bad request error and have some more checking to do tomorrow, but I thought I'd rather just post here and maybe get some advice on what/how to further test my project for errors. Just in case it helps, the app.config is the same as the following except for the service and contract names:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>    <services>
      <!-- This section is optional with the new configuration model
           introduced in .NET Framework 4. -->
      <service name="Microsoft.ServiceModel.Samples.CalculatorService"
               behaviorConfiguration="CalculatorServiceBehavior">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8000/ServiceModelSamples/service"/>
          </baseAddresses>
        </host>
        <!-- this endpoint is exposed at the base address provided by host: http://localhost:8000/ServiceModelSamples/service  -->
        <endpoint address=""
                  binding="wsHttpBinding"
                  contract="Microsoft.ServiceModel.Samples.ICalculator" />
        <!-- the mex endpoint is exposed at http://localhost:8000/ServiceModelSamples/service/mex -->
        <endpoint address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange" />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="CalculatorServiceBehavior">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="False"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

怎么可能让从头开始工作三次尝试，但如果唯一的区别是它没有做任何其他的文件和2加辅助类的大小第四不再工作？我的意思是，该服务已经在那里，否则我会得到一个404 Not Found错误，而不是事，但错虽然我使用了精确的元数据（！）相同的app.config 在另一个尝试，有它的工作原理。

What could possibly make three attempts from scratch work, but the 4th not work again where the only difference is the size of the files and 2 added helper classes which are not doing anything else? I mean, the service has to be there, otherwise I'd get a 404 Not Found error instead, but something's wrong with the metadata although I'm using the exact(!) same app.config in another try and there it works.

任何建议/提示是大大AP preciated。我一定会尝试在明天的结合增加缓冲区大小，听说帮助一些人，但我不知道我的存在，因为我真的不发送任何东西，我是谁？我只是想添加服务参考，我不知道，如果大小事务那里。我也已经尝试过TCP和basicHTTP绑定相同的结果。

Any suggestions/hints are greatly appreciated. I'll surely try increasing the buffer sizes in the binding tomorrow, I heard that helped some people, but I don't know about me there since I'm not really sending anything yet, am I? I'm just trying to add the service reference, I don't know if the size matters there. I also already tried TCP and basicHTTP bindings to the same result.

在此先感谢和抱歉文本墙;我今天的工作非常沮丧，甚至用不能够正确地研究了错误，由于那些愚蠢的工作条件，并表示无奈又上来写这个...;）

Thanks in advance and sorry for the wall of text; I got very frustrated at work today, with not even being able to research the error properly due to those stupid work conditions, and that frustration came up again writing this... ;)

推荐答案

有关你必须要找到一个问题的开始，我的意思是你需要知道服务器端会发生什么。你需要处理程序所有的错误并记录它们。

For the beginning you have to find an issue, I mean you need to know what happens on server side. You need to handler all error and log them.

记录错误

    public class GlobalErrorHanler: IErrorHandler 
    {
        //to use log4net you have to have a proper configuration in you web/app.config
        private static readonly ILog Logger = LogManager.GetLogger(typeof (GlobalErrorHandler));

        public bool HandleError(Exception error)
        {
            //if you host your app on IIS you have to log using log4net for example
            Logger.Error("Error occurred on the service side", error);

            //Console.WriteLine(error.Message); 
            //Console.WriteLine(error.StackTrace);

            return false;
        }

        public void ProvideFault(Exception error, System.ServiceModel.Channels.MessageVersion version, ref System.ServiceModel.Channels.Message fault)
        {
            //you can provide you fault exception here
        }
    }

然后服务行为（继承属性添加可能使用它作为服务实现的属性）：

Then service behavior (inherits Attribute to add possibility to use it as an attribute on service implementation):

public class MyErrorHandlingBehavior : Attribute, IServiceBehavior
{

    public void AddBindingParameters(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase, System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
    {
        return;
    }

    public void ApplyDispatchBehavior(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)
    {
        foreach (ChannelDispatcher disp in serviceHostBase.ChannelDispatchers)
            disp.ErrorHandlers.Add(new GlobalErrorHanler());
    }

    public void Validate(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)
    {        }
}

和扩展元素使用它在你的配置：

And extension element to use it in your config:

public class ErrorHandlerExtention: BehaviorExtensionElement
{

    public override Type BehaviorType
    {
        get { return typeof(MyErrorHandlingBehavior); }
    }

    protected override object CreateBehavior()
    {
        return new MyErrorHandlingBehavior();
    }
}

然后添加到配置文件：

<system.serviceModel>
  <extensions>
    <behaviorExtensions>
      <!-- Extension.ErrorHandlerExtention: fully qualified class name, ArrayList: assebmly name-->
      <add name="errorHandler" type="Extension.ErrorHandlerExtention, Extensions"/>
    </behaviorExtensions>
  </extensions>

<behaviors>
  <serviceBehaviors>
    <behavior name="CalculatorServiceBehavior">
      <serviceMetadata httpGetEnabled="true"/>
      <serviceDebug includeExceptionDetailInFaults="False"/>

      <!-- the name of this element must be the same as in the section behaviorExtensions -->
      <errorHandler />

    </behavior>
  </serviceBehaviors>
</behaviors>

</system.serviceModel>

这将让你得到一个错误。当你有一个错误回到了论坛。

This will allow you to get an error. When you have an error get back to the forum.

一些帖子这种​​技术：的错误1 ，的错误2

Some more posts with this technique: Error 1, Error 2

追踪：

要打开跟踪你有这样的行添加到配置：

To turn on tracing you have to add such lines to a config:

<system.diagnostics>
  <trace autoflush="true" />
  <sources>
    <source name="System.ServiceModel"
            switchValue="Information, ActivityTracing"
            propagateActivity="true">
      <listeners>
        <add name="log"
            type="System.Diagnostics.XmlWriterTraceListener"
            initializeData= "C:\traces.svclog" />
      </listeners>
    </source>
  </sources>
</system.diagnostics>

的跟踪工具的：跟踪查看

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