"Thread was being aborted" in WCF Service Call

c# asp.net ajax wcf prtg
igor picture igor · Sep 28, 2010 · Viewed 7.3k times · Source

In my program there is a aspx page that contains wcf client, that so on calls wcf service located on same server.

I`v get this exception when my wcf client calls wcf service hosted in IIS on production server.

Ex. msg: Thread was being aborted.

Ex stack:

at System.Net.UnsafeNclNativeMethods.OSSOCK.recv(IntPtr socketHandle, Byte* pinnedBuffer, Int32 len, SocketFlags socketFlags) at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, SocketError& errorCode) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead) at System.Net.ConnectStream.ProcessWriteCallDone(ConnectionReturnResult returnResult) at System.Net.ConnectStream.CallDone(ConnectionReturnResult returnResult) at System.Net.ConnectStream.ResubmitWrite(ConnectStream oldStream, Boolean suppressWrite) at System.Net.HttpWebRequest.EndWriteHeaders_Part2() at System.Net.HttpWebRequest.EndWriteHeaders(Boolean async) at System.Net.HttpWebRequest.WriteHeadersCallback(WebExceptionStatus errorStatus, ConnectStream stream, Boolean async) at System.Net.ConnectStream.WriteHeaders(Boolean async) at System.Net.HttpWebRequest.EndSubmitRequest() at System.Net.HttpWebRequest.GetResponse() at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout) at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout) at System.ServiceModel.Dispatcher.RequestChannelBinder.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) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at StationService.IStationService.GetCurrentStationTrack(String stationId) at StationService.StationServiceClient.GetCurrentStationTrack(String stationId) at GetSongJS.getMarq(String radioIdentifier)

I using PRTG Ipmonitor and it give me too many requests on "Requests Current" sensor. My site becomes anavailable in browser. If a delete this page that calls service all is going to be OK.

Answer

Shiraz Bhaiji picture Shiraz Bhaiji · Sep 28, 2010

It sounds like you are not closing the WCF client.

What I think is happening is:

  • User calls the aspx page
  • aspx page calls the service
  • aspx page returns to the user
  • the service client is not closed, therefore request is open and number of current requests is high
  • eventually you have the max number of requests open
  • the page waits for a free connection, when it does not get one the aspx page timesout
  • you then get a thread abort exception from the timeout

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