WCF 问题求助
各位：
我在一个项目中，使用WPF+WCF的方式做了一套应用，现在发现一个问题，前台WPF运行大概20分钟以后，WCF就会挂掉，（WPF中有个定时轮询的方法，会去WCF拿数据，一分钟一次）。挂掉的表现就是，WPF的请求，都报timeout错误。如果用wcftestclient，可以连接上wcf，但是请求数据的时候，也还是报出timeout错误。
后来配置后让wcf写日志，用svctraceviewer发现了问题。具体xml如下：
<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent">
<System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system">
<EventID>131075</EventID>
<Type>3</Type>
<SubType Name="Error">0</SubType>
<Level>2</Level>
<TimeCreated SystemTime="2013-07-04T06:57:59.2671542Z" />
<Source Name="System.ServiceModel" />
<Correlation ActivityID="{70905741-318b-4276-b1b8-e828c10b1376}" />
<Execution ProcessName="w3wp" ProcessID="40392" ThreadID="42" />
<Channel />
<Computer>NJDJJD</Computer>
</System>
<ApplicationData>
<TraceData>
<DataItem>
<TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Error">
<TraceIdentifier>http://msdn.microsoft.com/zh-CN/library/System.ServiceModel.Diagnostics.ThrowingException.aspx</TraceIdentifier>
<Description>Throwing an exception.</Description>
<AppDomain>/LM/W3SVC/7/ROOT-10-130173865198444230</AppDomain>
<Exception>
<ExceptionType>System.ServiceModel.ProtocolException, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>Content Type application/soap+xml; charset=utf-8 was sent to a service expecting text/xml; charset=utf-8. The client and service bindings may be mismatched.</Message>
<StackTrace>
at System.ServiceModel.Channels.HttpInput.ThrowHttpProtocolException(String message, HttpStatusCode statusCode, String statusDescription)
at System.ServiceModel.Channels.HttpInput.ParseIncomingMessage(Exception& requestException)
at System.ServiceModel.Channels.HttpChannelListener.HttpContextReceived(HttpRequestContext context, Action callback)
at System.ServiceModel.Activation.HostedHttpTransportManager.HttpContextReceived(HostedHttpRequestAsyncResult result)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.HandleRequest()
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.BeginRequest()
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.OnBeginRequest(Object state)
at System.Runtime.IOThreadScheduler.ScheduledOverlapped.IOCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Runtime.Fx.IOCompletionThunk.UnhandledExceptionFrame(UInt32 error, UInt32 bytesRead, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
</StackTrace>
<ExceptionString>System.ServiceModel.ProtocolException: Content Type application/soap+xml; charset=utf-8 was sent to a service expecting text/xml; charset=utf-8. The client and service bindings may be mismatched.</ExceptionString>
<DataItems>
<Data>
<Key>System.ServiceModel.Channels.HttpInput.HttpStatusCode</Key>
<Value>UnsupportedMediaType</Value>
</Data>
<Data>
<Key>System.ServiceModel.Channels.HttpInput.HttpStatusDescription</Key>
<Value>Cannot process the message because the content type 'application/soap+xml; charset=utf-8' was not the expected type 'text/xml; charset=utf-8'.</Value>
</Data>
</DataItems>
</Exception>
</TraceRecord>
</DataItem>
</TraceData>
</ApplicationData>
</E2ETraceEvent>
不知道各位知不知道怎么解决？
谢谢了
非常对不起，新手，分数太少了。谢谢帮忙 WCF WCF C#
[解决办法]
没有及时关闭client。
