常见 WCF 异常:连接意外关闭 [英] Common WCF Exception : Connection Unexpectedly Closed
问题描述
我有三个项目.一个是 WCF 服务项目，一个是 WPF 项目，一个是 Microsoft 单元测试项目.我使用如下所示的数据对象设置 WCF 服务项目:
I have three projects. One is a WCF Services Project, one is a WPF Project, and one is a Microsoft Unit Testing Project. I setup the WCF Services project with a data object that looks like this:
[DataContract]
public enum Priority
{
Low,
Medium,
High
}
[DataContract]
public struct TimeInfo
{
[DataMember]
public Int16 EstimatedHours { get; set; }
[DataMember]
public Int16 ActualHours { get; set; }
[DataMember]
public DateTime StartDate { get; set; }
[DataMember]
public DateTime EndDate { get; set; }
[DataMember]
public DateTime CompletionDate { get; set; }
}
[DataContract]
public class Task
{
[DataMember]
public string Title { get; set; }
[DataMember]
public string Description { get; set; }
[DataMember]
public Priority Priority { get; set; }
[DataMember]
public TimeInfo TimeInformation { get; set; }
[DataMember]
public Decimal Cost { get; set; }
}
我的合同是这样的:
[ServiceContract]
public interface ITaskManagement
{
[OperationContract]
List<Task> GetTasks();
[OperationContract]
void CreateTask(Task taskToCreate);
[OperationContract]
void UpdateTask(Task taskToCreate);
[OperationContract]
void DeleteTask(Task taskToDelete);
}
当我尝试使用此代码在 WPF 应用程序或单元测试项目中使用该服务时:
When I try to use the service in either the WPF Application or the Unit Test Project with this code:
var client = new TaskManagementClient();
textBox1.Text = client.GetTasks().ToString();
client.Close();
我收到以下错误:底层连接已关闭:连接意外关闭."
I get the following error: "The underlying connection was closed: The connection was closed unexpectedly."
WPF 和单元测试项目的 app.config 如下所示:
The app.config for the WPF and Unit Test Projects look like this:
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_ITaskManagement" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Windows" negotiateServiceCredential="true"
algorithmSuite="Default" establishSecurityContext="true" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:9999/TaskManagement.svc"
binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_ITaskManagement"
contract="TaskManagement.ITaskManagement" name="WSHttpBinding_ITaskManagement">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
</client>
</system.serviceModel>
WCF 服务的 web.config 如下所示:
and the web.config of the WCF Service looks like this:
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="InternetBasedWcfServices.TaskManagementBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false" />
</behavior>
<behavior name="InternetBasedWcfServices.ScheduleManagementBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false" />
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="InternetBasedWcfServices.TaskManagementBehavior"
name="InternetBasedWcfServices.TaskManagement">
<endpoint address="" binding="wsHttpBinding" contract="InternetBasedWcfServices.ITaskManagement">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
</service>
<service behaviorConfiguration="InternetBasedWcfServices.ScheduleManagementBehavior"
name="InternetBasedWcfServices.ScheduleManagement">
<endpoint address="" binding="wsHttpBinding" contract="InternetBasedWcfServices.IScheduleManagement">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
</service>
</services>
</system.serviceModel>
这不是第一次发生这种情况，我猜这是配置问题.但是每次我通常只是把我的服务吹走，然后把它放回去或者创建一个新的服务项目.然后一切都很好.如果有人有任何想法，那就太棒了.谢谢.
This is not the first time this has happened, and I'm guessing it is a configuration issue. But each time I've usually just blown away my service and put it back or created a new service project. Then everything works wonderfully. If anyone has any ideas, that would be awesome. Thx.
**
更新:我添加了更多评论我对这个问题的故障排除.当有答案时，如果答案未发表，我将其添加为一个官方的答案".
Updated: I've added comments for more of my troubleshooting on this problem. When an answer is available, if the answer is unpublished, I'll add it as an official "answer".
**
推荐答案
我找到了答案
好的，不确定是否是 kewl 回答我自己的问题，但我们开始吧.由于某种原因，枚举需要使用 [EnumMember] 属性进行标记，如下所示:
Ok, not sure if it is kewl answering my own question, but here we go. For some reason the enumeration needed to be marked with the [EnumMember] Attributes as below:
[DataContract]
public enum Priority
{
[EnumMember]
Low,
[EnumMember]
Medium,
[EnumMember]
High
}
一旦我这样做了，我的测试和服务就可以被调用而不会发生错误.我仍然不确定为什么会显示该特定错误.该错误似乎与发生错误的功能原因没有任何关联，但此修复肯定会解决所有问题.
Once I did that my tests and services could be called without the error occurring. I'm still not sure why that specific error was displayed. The error doesn't seem to align in any correlation with the functional reason the error occurred, but this fix definitely smoothed everything out.
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