WCF 奇怪的服务行为
我正在使用 wsHttpBinding 服务，从现在起该服务运行良好。我的 WPF 应用程序（客户端）连接到它，并每 15 秒自动从服务器接收信息。
我注意到有时（偶尔，有时没有问题）我的客户会收到以下异常：
System.ServiceModel.ProtocolException: The content type text/html; charset=utf-8 of the response message does not match the content type of the binding (application/soap+xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 1024 bytes of the response were: '<html>
<head>
<title> </title>
<script type="text/javascript">
function bredir(d,u,r,v,c){var w,h,wd,hd,bi;var b=false;var p=false;var s=[[300,250,false],[250,250,false],[240,400,false],[336,280,false],[180,150,false],[468,60,false],[234,60,false],[88,31,false],[120,90,false],[120,60,false],[120,240,false],[125,125,false],[728,90,false],[160,600,false],[120,600,false],[300,600,false],[300,125,false],[530,300,false],[190,200,false],[470,250,false],[720,300,true],[500,350,true],[550,480,true]];if(typeof(window.innerHeight)=='number'){h=window.innerHeight;w=window.innerWidth;}else if(typeof(document.body.offsetHeight)=='number'){h=document.body.offsetHeight;w=document.body.offsetWidth;}for(var i=0;i<s.length;i++){bi=s[i];wd=Math.abs(w-bi[0]);hd=Math.abs(h-bi[1]);if(wd<=2&&hd<=2){b=true;p=bi[2];}}if(b||(w<100&&w!==0)||(h<100&&h!==0)){if(p&&self==parent){self.close();return;}return'/b'+'anner.php?w='+w+'&h='+h+'&d='+d+'&u='+u+'&r='+r+'&view='+v;}else{return c;}}
</script>
</head>
<body onLoad="window.l'.
Server stack trace:
at System.ServiceModel.Channels.HttpChannelUtilities.ValidateRequestReplyResponse(HttpWebRequest request, HttpWebResponse response, HttpChannelFactory factory, WebException responseException, ChannelBinding channelBinding)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ClientReliableChannelBinder`1.RequestClientReliableChannelBinder`1.OnRequest(TRequestChannel channel, Message message, TimeSpan timeout, MaskingMode maskingMode)
at System.ServiceModel.Channels.ClientReliableChannelBinder`1.Request(Message message, TimeSpan timeout, MaskingMode maskingMode)
at System.ServiceModel.Security.SecuritySessionClientSettings`1.SecurityRequestSessionChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
您知道在哪里解决此问题吗？
谢谢， 卡米尔。
I'm using a wsHttpBinding service that is working perfectly since now. My WPF application (client) is connected to it and automatically receives information from the server every 15 seconds.
I've been noticing that sometimes (once in a while, some days there is no problem) my client receives the following exception:
System.ServiceModel.ProtocolException: The content type text/html; charset=utf-8 of the response message does not match the content type of the binding (application/soap+xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 1024 bytes of the response were: '<html>
<head>
<title> </title>
<script type="text/javascript">
function bredir(d,u,r,v,c){var w,h,wd,hd,bi;var b=false;var p=false;var s=[[300,250,false],[250,250,false],[240,400,false],[336,280,false],[180,150,false],[468,60,false],[234,60,false],[88,31,false],[120,90,false],[120,60,false],[120,240,false],[125,125,false],[728,90,false],[160,600,false],[120,600,false],[300,600,false],[300,125,false],[530,300,false],[190,200,false],[470,250,false],[720,300,true],[500,350,true],[550,480,true]];if(typeof(window.innerHeight)=='number'){h=window.innerHeight;w=window.innerWidth;}else if(typeof(document.body.offsetHeight)=='number'){h=document.body.offsetHeight;w=document.body.offsetWidth;}for(var i=0;i<s.length;i++){bi=s[i];wd=Math.abs(w-bi[0]);hd=Math.abs(h-bi[1]);if(wd<=2&&hd<=2){b=true;p=bi[2];}}if(b||(w<100&&w!==0)||(h<100&&h!==0)){if(p&&self==parent){self.close();return;}return'/b'+'anner.php?w='+w+'&h='+h+'&d='+d+'&u='+u+'&r='+r+'&view='+v;}else{return c;}}
</script>
</head>
<body onLoad="window.l'.
Server stack trace:
at System.ServiceModel.Channels.HttpChannelUtilities.ValidateRequestReplyResponse(HttpWebRequest request, HttpWebResponse response, HttpChannelFactory factory, WebException responseException, ChannelBinding channelBinding)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ClientReliableChannelBinder`1.RequestClientReliableChannelBinder`1.OnRequest(TRequestChannel channel, Message message, TimeSpan timeout, MaskingMode maskingMode)
at System.ServiceModel.Channels.ClientReliableChannelBinder`1.Request(Message message, TimeSpan timeout, MaskingMode maskingMode)
at System.ServiceModel.Security.SecuritySessionClientSettings`1.SecurityRequestSessionChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Would you have any idea on where to fix this problem?
Thanks,
Camille.
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评论（2）
我猜测您连接的服务有时会出现问题，并且会返回 html 错误页面。这可能是 404 未找到页面、503 服务不可用或 500 内部服务器错误。
I am guessing that occasionally the service you are connecting to has a problem and is responding with an html error page. This might be a 404 Page Not Found or a 503 Service Unavailable or a 500 Internal Server Error.
这似乎与安全谈判有关。您的安全上下文有可能被缓存 - 因此当会话过期时，安全上下文不再有效，但它仍然尝试传递它。您可能需要检查这一点，并确保每次都关闭连接。
您可能最终必须实现一个重试例程（您的客户端代码来捕获该通信异常，当发生这种情况时，丢弃当前的 Client 对象并创建一个新的对象（类似于重试）。我必须在其中之一执行此操作我的客户们，
干杯
，瓦格纳。
This seems to be related to security negotiation. There is a chance that your security context is being cached - so when the session expires, the security context is not valid anymore, but it still try to pass it on. You might need to check this and that you are closing your connection everytime.
And you might end up having to implement a retry routine (your client code to catch that communication exception and when this occurs throw the current Client object away and create a new one (something like a retry). I had to do this in one of my clients.
I hope this helps.
Cheers, Wagner.