Question

我有一个Silverlight 4应用程序，它与运行IIS 7.5的服务器通信，该服务器承载了许多我自己的WCF服务。应用程序在99％的时间内运行愉快，但用户报告应用程序每天会冻结几次，或者在应用程序的不同位置生成错误消息。

我启用了WCF跟踪并发生以下错误：

<Exception>
  <ExceptionType>System.ServiceModel.ProtocolException, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
  <Message>The number of bytes available is inconsistent with the HTTP Content-Length header.  There may have been a network error or the client may be sending invalid requests.        </Message>
  <StackTrace>
    at System.ServiceModel.Channels.HttpInput.ReadBufferedMessage(Stream inputStream)
    at System.ServiceModel.Channels.HttpInput.ParseIncomingMessage(Exception&amp; 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>
</Exception>

然后我在用户的机器上运行Fiddler，发现发生了以下错误：

HTTP/1.1 504 Fiddler - Receive Failure
Content-Type: text/html; charset=UTF-8
Connection: close
Timestamp: 18:24:21.941

ReadResponse() failed: The server did not return a response for this request.

从某些研究来看，客户端和服务器之间存在一些通信问题。服务器是一个虚拟专用服务器，我从来没有遇到过任何麻烦，从查看日志来看，处理器/内存从未达到最大化。

我的问题是： 1.我可以做些什么来更详细地跟踪发生的事情或我可以调整的任何IIS或服务器相关的内容以避免此错误 2.在我的Silverlight应用程序中有一些方法可以等待特定的时间（例如30秒），如果没有收到响应，请取消当前请求并再试一次

Answer 1

在以下网页中解决了类似的问题： Error at WCF Service The number of bytes available is inconsistent with the HTTP Content-Length header

Silverlight客户端和WCF服务之间的间歇性通信问题

1 个答案: