We're getting errors every so often with a WCF service (consumed by Silverlight) that don't give us much to go on:
The service '/ourservice.svc' cannot be activated due to an exception during compilation.
The exception message is: Object reference not set to an instance of an object.. --->
System.NullReferenceException: Object reference not set to an instance of an object.
at System.Web.Compilation.DiskBuildResultCache.CacheBuildResult(String cacheKey, BuildResult result, Int64 hashCode, DateTime utcStart)
at System.Web.Compilation.BuildManager.CacheBuildResultInternal(String cacheKey, BuildResult result, Int64 hashCode, DateTime utcStart)
at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath)
at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
The service compiles/runs fine whenever I use it via the browser or using the silverlight client. The Silverlight side of the system reports this also equally un-helpful error:
System.ServiceModel.CommunicationException:
[HttpWebRequest_WebException_RemoteServer]Arguments: NotFound
The only lead I've managed to find is possibly changing the instancing behaviour but I'm not sure why we would need to do that, and I can't tell what the default is anyway.
It's hosted on Windows 2008 SP1
The server is behind a load balancer
The timeouts in the web.config for the service are 5 minutes
The maximum object size is 50000000
The services have AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)
Any suggestions would be great
Update
This is another symptom - the Silverlight client frequently sends this exception to our logging service (which writes to the event log + emails)
There was an error saving the report - The error object contained errors
System.ServiceModel.CommunicationException: [HttpWebRequest_WebException_RemoteServer]
Arguments: NotFound
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=4.0.60129.0&File=System.Windows.dll&Key=HttpWebRequest_WebException_RemoteServer ---> System.Net.WebException: [HttpWebRequest_WebException_RemoteServer]
Arguments: NotFound
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=4.0.60129.0&File=System.Windows.dll&Key=HttpWebRequest_WebException_RemoteServer ---> System.Net.WebException: [HttpWebRequest_WebException_RemoteServer]
Arguments: NotFound
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=4.0.60129.0&File=System.Windows.dll&Key=HttpWebRequest_WebException_RemoteServer
at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult)
at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClass5.<EndGetResponse>b__4(Object sendState)
at System.Net.Browser.AsyncHelper.<>c__DisplayClass4.<BeginOnUI>b__1(Object sendState)
--- End of inner exception stack trace ---
at System.Net.Browser.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object state)
at System.Net.Browser.BrowserHttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.CompleteGetResponse(IAsyncResult result)
--- End of inner exception stack trace ---
at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)
at System.ServiceModel.ClientBase`1.ChannelBase`1.EndInvoke(String methodName, Object[] args, IAsyncResult result)
at MyNamespaceSilverlight.Core.ReportServiceReference.ReportServiceClient.ReportServiceClientChannel.EndUpdateReport(IAsyncResult result)
at MyNamespaceSilverlight.Core.ReportServiceReference.ReportServiceClient.MyNamespaceSilverlight.Core.ReportServiceReference.IReportService.EndUpdateReport(IAsyncResult result)
at MyNamespaceSilverlight.Core.ReportServiceReference.ReportServiceClient.OnEndUpdateReport(IAsyncResult result)
at System.ServiceModel.ClientBase`1.OnAsyncCallCompleted(IAsyncResult result)
Is anything in the service modifying the contents of the \bin directory? When hosting under ASP.NET, the ASP.NET runtime will monitor the \bin directory for any changes and, when a change is seen, it will attempt to reinitialize the application so that it picks up whatever changes there might have been.
You should not have anything writing to the \bin directory as part of your service's normal operation. Usually this is a problem with log files being configured to write to the \bin directory rather than a specific directory of their own. If you are unable to write the log files someplace outside the root of your application directory for whatever reason, just write them into a \logs sub-directory and configure ASP.NET to block all access to that directory like so:
<location path="logs">
<system.web>
<authorization>
<deny users="*" />
</authorization>
</system.web>
</location>
A similar problem is reported here: Service activation problem that seems to be related to log files.
Looks like a bug in System.Web. Same issue is reported here: http://connect.microsoft.com/VisualStudio/feedback/details/550511/nullreferenceexception-during-service-compilation.
The jury is still out, but I think you have better chances of getting this issue resolved if you post your details on http://connect.microsoft.com.
We've received the similar error during testing of WCF services, when one of the developers started a deployment of a new version of the service.
Related
Server Error in '/OrderProcessingService' Application.
This collection already contains an address with scheme http. There can be at most one address per scheme in this collection.
Parameter name: item
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: This collection already contains an address with scheme http. There can be at most one address per scheme in this collection.
Parameter name: item
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Can someone help to resolve this issue with expose schema using BizTalk WCF publishing wizard?
After changing web.config file as below
</system.serviceModel>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
Getting different error and trace as below:
Stack Trace:
[FileNotFoundException: Could not load file or assembly 'Microsoft.BizTalk.Interop.SSOClient, Version=9.0.1000.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.]
Microsoft.BizTalk.Adapter.Wcf.Runtime.BtsServiceHostBase.ConfigureClientCredentials() +0
Microsoft.BizTalk.Adapter.Wcf.Runtime.BtsServiceHostBase.InitializeRuntime() +1173
Microsoft.BizTalk.Adapter.Wcf.Runtime.WebServiceHost`3.InitializeRuntime() +130
System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout) +63
System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) +563
System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +135
System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) +654
[ServiceActivationException: The service '/OrderProcessingService/OrderProcessingService.svc' cannot be activated due to an exception during compilation. The exception message is: Could not load file or assembly 'Microsoft.BizTalk.Interop.SSOClient, Version=9.0.1000.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified..]
System.ServiceModel.AsyncResult.End(IAsyncResult result) +15778592
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +15698937
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.ExecuteSynchronous(HttpApplication context, Boolean flowContext) +265
System.ServiceModel.Activation.HttpModule.ProcessRequest(Object sender, EventArgs e) +227
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +171
That first error basically means that you have tried publishing multiple different protocols in the same App Pool. You need to have separate IIS App pools for the different protocols.
Also make sure that the Application Pool is running with the Isolated Host user.
I have a project with several WCF services (mix of REST and SOAP). The project has been running On-Prem for 6 months without an issue. We are moving this to Azure but have run into an issue that will prevent us from going live.
The project uses Autofac for it's IOC. We are gonig to host this in a Cloud Service in Azure. Everything appears to work correctly when running locally in the Azure Emulator however once we deploy using the Cloud Service project, everything builds and deploys correctly, but we receive the following error when trying to access a service.
Server Error in '/' Application.
Value cannot be null. Parameter name: key
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentNullException: Value cannot be null. Parameter name: key Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[ArgumentNullException: Value cannot be null.
Parameter name: key]
System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument) +48
System.Collections.Generic.Dictionary`2.FindEntry(TKey key) +38
System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value) +20
System.ServiceModel.Dispatcher.WebHttpDispatchOperationSelector..ctor(ServiceEndpoint endpoint) +2459
System.ServiceModel.Description.WebHttpBehavior.GetOperationSelector(ServiceEndpoint endpoint) +125
System.ServiceModel.Description.WebHttpBehavior.ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher) +1955
System.ServiceModel.Description.DispatcherBuilder.InitializeServiceHost(ServiceDescription description, ServiceHostBase serviceHost) +4245
System.ServiceModel.ServiceHostBase.InitializeRuntime() +119
System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout) +45
System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) +553
System.ServiceModel.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity) +350
System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) +1614
[ServiceActivationException: The service '/Event/Calendar' cannot be activated due to an exception during compilation. The exception message is: Value cannot be null.
Parameter name: key.]
System.Runtime.AsyncResult.End(IAsyncResult result) +925
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +528
System.ServiceModel.Activation.AspNetRouteServiceHttpHandler.EndProcessRequest(IAsyncResult result) +107
System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +151
It appears that it's having an issue with the service configuration endpoint. That is registered through Autofac WCF integration using the OOTB RouteTable here:
RouteTable.Routes.Add(new ServiceRoute("Event/Calendar", new AutofacWebServiceHostFactory(), typeof(CalendarSvc)));
All of this works fine in IIS and the local Azure emulator, but once deployed to the cloud service is where we get an issue.
Observed exactly problem. Solved by canceling IntelliTrace on this hosted service.
I did publishing from VS2013 and marked "Enable IntelliTrace" during publishing. Once I canceled this option and re-publish - all works properly....
I have requirements to configure IIS 6 to host a WCF service targeting .NET Framework 4.0 using a custom identity for the worker process. The identity is a highly restricted domain account that is used to identify and manage the permissions for an entire ecosystem of services that interact in the same business process.
I have run aspnet_regiis.exe with the -ga flag to grant this identity permissions to the relevant ASP.NET locations on the server environment and add it to the IIS_WPG group. For the most part, things seem to work relatively well... except for the auto-generated WSDL specification's includes. Accessing the top-level WSDL spec works fine (i.e. path.to/MyService.svc?wsdl), but IIS 6 is resetting the connection before returning the response for the WSDL's includes (i.e. path.to/MyService.svc?xsd=xsd0, etc). This happens both when accessed via loopback on the server and through the public IP. It does not happen when reconfiguring the app pool to run under the default Network Service account.
I haven't found any documentation for this particular problem, but it's not the first time I've had difficulty with certain bits of the .NET Framework not quite working correctly when the IIS 6 worker process is running under a custom domain identity. I haven't configured any special privileges in the Local Security Policy for this account, other than the pre-configured permission for members of IIS_WPG to log on as a batch job. What might I be missing to get the worker functioning correctly?
EDIT:
The Event Viewer contains no errors and IIS logs show the server responding with 200 OK to the request, but the full status value is 200 0 64, indicating a Win32 status code of 64.
The dump I receive on that error from net helpmsg 64 is as follows:
The specified network name is no longer available.
Responses from various entities are below:
Chrome: Error 101 (net::ERR_CONNECTION_RESET): The connection was reset
Firefox: The connection to the server was reset while the page was loading
Eclipse/Java: java.net.SocketException: Connection reset
EDIT:
Service logging (provided by BNL) produced the following exception dump:
System.InvalidOperationException: Unable to generate a temporary class
(result=1). error CS2001: Source file 'C:\WINDOWS\TEMP\vxmgwmnl.0.cs'
could not be found. error CS2008: No inputs specified.
at System.Xml.Serialization.Compiler.Compile(Assembly parent, String
ns, XmlSerializerCompilerParameters xmlParameters, Evidence evidence)
at
System.Xml.Serialization.TempAssembly.GenerateAssembly(XmlMapping[]
xmlMappings, Type[] types, String defaultNamespace, Evidence evidence,
XmlSerializerCompilerParameters parameters, Assembly assembly,
Hashtable assemblies) at
System.Xml.Serialization.TempAssembly..ctor(XmlMapping[] xmlMappings,
Type[] types, String defaultNamespace, String location, Evidence
evidence) at System.Xml.Serialization.XmlSerializer..ctor(Type type,
String defaultNamespace) at
System.Xml.Schema.XmlSchema.Write(XmlWriter writer,
XmlNamespaceManager namespaceManager) at
System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.XmlSchemaMessage.OnWriteBodyContents(XmlDictionaryWriter
writer) at
System.ServiceModel.Channels.Message.OnWriteMessage(XmlDictionaryWriter
writer) at
System.ServiceModel.Channels.BufferedMessageWriter.WriteMessage(Message
message, BufferManager bufferManager, Int32 initialOffset, Int32
maxSizeQuota) at
System.ServiceModel.Channels.TextMessageEncoderFactory.TextMessageEncoder.WriteMessage(Message
message, Int32 maxMessageSize, BufferManager bufferManager, Int32
messageOffset) at
System.ServiceModel.Channels.HttpOutput.SerializeBufferedMessage(Message
message) at System.ServiceModel.Channels.HttpOutput.Send(TimeSpan
timeout) at
System.ServiceModel.Channels.HttpRequestContext.OnReply(Message
message, TimeSpan timeout) at
System.ServiceModel.Channels.RequestContextBase.Reply(Message message,
TimeSpan timeout) at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.Reply(MessageRpc&
rpc)
Using the guidelines on the Microsoft KB article Error message when ASP.NET 2.0 is configured to run with a user account: "Unable to generate a temporary class", I located the C:\Windows\Temp directory and inspected its folder properties by right-clicking and choosing Properties. I then navigated to the Security tab and clicked Advanced, then Add. I entered the name of the IIS_WPG group on the local computer and allowed it only the special permission List Folder / Read Data. This has now resolved the issue.
Answer
It was a configuration problem.
We had two services in the application. Prior to the problem, both services had explicit binding configuration that matched and worked well. One service was going to be removed, so the dev remmed out the explicit binding configuration, forgetting that .NET 4.0 provides default (and different) bindings.
Whichever service was hit first, its settings would not be incompatible with any other settings (since it was first) and would be fine. The service that was loaded subsequently would have different binding settings and be refused by the TransportManager.
The apparent intermittency was due to us only focusing on the one remaining service, thinking the other service was no longer in the picture. A monitoring utility was still hitting the removed service and would get in sometimes before we could reload the other service after a configuration change.
Original Question
We're getting an intermittent error when first starting up a service in IIS. If I make a whitespace change to any of the configs and reload, then about 50% of the time the service will come up fine. Once it's up, it's good to go. But the next time we deploy to this box, we start the russian roulette all over again.
We've looked over other forum posts on the same error and so far have not been able to come up with a definite fix. It took us a while to realize that none of the configuration changes we were trying were actually influencing the problem since merely a whitespace change is enough to get it to start afresh and get it to work part of the time. Seems there's some sort of race condition internally with the TransportManagerTable, perhaps it's empty when the service fails to come up? Not sure, trying to get some tracing or something to give us better info on what's in the TransportManagerTable instance.
There is no compatible TransportManager found for URI 'net.tcp://box:10101/DEV/AwesomeService.svc'. This may be because that you have used an absolute address which points outside of the virtual application, or the binding settings of the endpoint do not match those that have been set by other services or endpoints. Note that all bindings for the same protocol should have same settings in the same application.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: There is no compatible TransportManager found for URI 'net.tcp://box:10101/DEV/AwesomeService.svc'. This may be because that you have used an absolute address which points outside of the virtual application, or the binding settings of the endpoint do not match those that have been set by other services or endpoints. Note that all bindings for the same protocol should have same settings in the same application.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[InvalidOperationException: There is no compatible TransportManager
found for URI 'net.tcp://box:10101/DEV/AwesomeService.svc'. This may
be because that you have used an absolute address which points outside
of the virtual application, or the binding settings of the endpoint do
not match those that have been set by other services or endpoints.
Note that all bindings for the same protocol should have same settings
in the same application.]
System.ServiceModel.Channels.TransportChannelListener.ThrowTransportManagersNotFound()
+8955459 System.ServiceModel.Channels.TransportChannelListener.SelectTransportManagers()
+16199511 System.ServiceModel.Channels.TransportManagerContainer.Open(SelectTransportManagersCallback
selectTransportManagerCallback) +71
System.ServiceModel.Channels.TcpChannelListener`2.OnOpen(TimeSpan
timeout) +182
System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan
timeout) +789
System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan
timeout) +375
[InvalidOperationException: The ChannelDispatcher at
'net.tcp://box:10101/DEV/AwesomeService.svc' with contract(s)
'"IAwesomeService", "ILoggingService"' is unable to open its
IChannelListener.]
System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan
timeout) +16199205
System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan
timeout) +789 System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan
timeout) +126
System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan
timeout) +789
System.ServiceModel.HostingManager.ActivateService(String
normalizedVirtualPath) +287
System.ServiceModel.HostingManager.EnsureServiceAvailable(String
normalizedVirtualPath) +1132
[ServiceActivationException: The service '/DEV/AwesomeService.svc'
cannot be activated due to an exception during compilation. The
exception message is: The ChannelDispatcher at
'net.tcp://box:10101/DEV/AwesomeService.svc' with contract(s)
'"IAwesomeService", "ILoggingService"' is unable to open its
IChannelListener..] System.Runtime.AsyncResult.End(IAsyncResult
result) +890624
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult
result) +180062
System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult
ar) +107
Version Information: Microsoft .NET Framework Version:4.0.30319;
ASP.NET Version:4.0.30319.1
Edited the configuration to set the Address Empty and the error was fixed.
To add a little bit more instruction, the issue is most likely in the Web.Config file of your service. In the node, make sure that your Endpoint Address is an empty string -or- make sure that your Endpoint Address URL points to the exact location of your service, as you specified in IIS.
<endpoint address="" binding="basicHttpBinding" bindingConfiguration="MyServiceBinding" contract="MySolution.IMyService"/>
I am working with silverlight3 with WCF service for a while.. I have developed and hosted my application into client mechine. It was working good. Then i need to do some modifications in my application, so I have added new functions in to my .svc file(i.e in to the wcf service). I have updated the servicereference successfully. When i re published and access it, it throws the error in a particulare method which i newly added.. But the other functions and data retreival are working good.. The newly added functions of the wcf services throws the communication error.
This is the function which i used to bind the combobox by the data retrieved from the wcf service..
Actual Error:
System.Reflection.TargetInvocationException: An exception occurred during the operation, making the result invalid. Check InnerException for exception details. ---> System.ServiceModel.CommunicationException: The remote server returned an error: NotFound. ---> System.Net.WebException: The remote server returned an error: NotFound. ---> System.Net.WebException: The remote server returned an error: NotFound.
at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult)
at System.Net.Browser.BrowserHttpWebRequest.<>c_DisplayClass5.b_4(Object sendState)
at System.Net.Browser.AsyncHelper.<>c_DisplayClass2.b_0(Object sendState)
--- End of inner exception stack trace ---
at System.Net.Browser.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object state)
at System.Net.Browser.BrowserHttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.CompleteGetResponse(IAsyncResult result)
--- End of inner exception stack trace ---
at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)
at System.ServiceModel.ClientBase1.ChannelBase1.EndInvoke(String methodName, Object[] args, IAsyncResult result)
at foundproject.ServiceReference1.Service1Client.Service1ClientChannel.EndUsergetBasedWorkgroup(IAsyncResult result)
at foundproject.ServiceReference1.Service1Client.ServiceReference1_IService1_EndUsergetBasedWorkgroup(IAsyncResult result)
at foundproject.ServiceReference1.Service1Client.OnEndUsergetBasedWorkgroup(IAsyncResult result)
at System.ServiceModel.ClientBase`1.OnAsyncCallCompleted(IAsyncResult result)
--- End of inner exception stack trace ---
at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
at foundproject.ServiceReference1.UsergetBasedWorkgroupCompletedEventArgs.get_Result()
at foundproject.UserMaster.BindUsers(Object sender, UsergetBasedWorkgroupCompletedEventArgs e)
Please Please help me to solve it out..
It will be a great help for me..
Thanks
Lakshmi.A
All methods in webservice are implemented using Interfaces, if you have added your function in Class file make sure its implemented by its interface-template/interface-method signature.
You have not changed the namespace of the newly added method.
the access modifier is public.
Try running your webservice file "svc" from IIS Management Console using Browse by Right clicking on "svc" file. it must show a default web service UI that we normally expect.
Debug your web service, and see if it hits the break point over your newly added method.
I'm sure by following these simple steps you will solve your problem.