Issue with https and charts

[Ronald de Bruijn]

Hello,

I am currently working on a Silverlight Business Application working entirely over Https. The project is hosted on Azure. I am using Q1 2011 tools and Siverlight 5.

I followed carefully the documentation and copy/pasted the web.config part as in : http://www.telerik.com/help/reporting/silverlight-enable-ssl-for-telerik-reporting-wcf-service.html 
I also enabled the Session caching for Azure and it is working fine. Now the problem is that as soon as i put a chart on my report, i am getting an error code 500. The detail is as follow :

Server Error in '/' Application.

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Unable to cast object of type 'System.Text.CodePageEncoding' to type 'System.Text.Encoding'.

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.InvalidCastException: Unable to cast object of type 'System.Text.CodePageEncoding' to type 'System.Text.Encoding'.

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:

[InvalidCastException: Unable to cast object of type 'System.Text.CodePageEncoding' to type 'System.Text.Encoding'.] ReadInternalEncoderBestFitFallbackFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] ) +648 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +106 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, String name, String ns) +109 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadSerializationInfo(XmlReaderDelegator xmlReader, Type type) +357 ReadCodePageEncodingFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] ) +144 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +106 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 ReadRenderingStreamFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] ) +1631 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +106 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 ReadArrayOfRenderingStreamFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString , XmlDictionaryString , CollectionDataContract ) +623 System.Runtime.Serialization.CollectionDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +161 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 ReadArrayOfRenderingStreamFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] ) +358 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +106 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 ReadReportServiceHistoryFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] ) +820 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +106 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 ReadArrayOfanyTypeFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString , XmlDictionaryString , CollectionDataContract ) +575 System.Runtime.Serialization.CollectionDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +161 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 ReadSerializableSessionStateStoreDataFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] ) +764 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context) +106 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns) +558 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, String name, String ns) +109 System.Runtime.Serialization.NetDataContractSerializer.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName) +170 System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver) +647 System.Runtime.Serialization.XmlObjectSerializer.ReadObject(XmlDictionaryReader reader) +128 Microsoft.ApplicationServer.Caching.Utility.Deserialize(Byte[][] buffers, Boolean checkTypeToLoad, Object context, IEnumerable`1 knownTypes) +684 Microsoft.ApplicationServer.Caching.SimpleSendReceiveModule.SendMsgAndWait(EndpointID endpt, RequestBody reqMsg, TimeSpan requestTimeout, IRequestTracker& tracker) +1615 Microsoft.ApplicationServer.Caching.HybridClient.SendMsgAndWait(RequestBody reqMsg, IRequestTracker& tracker) +188 Microsoft.ApplicationServer.Caching.DataCache.SendReceive(RequestBody reqMsg, IMonitoringListener listener) +254 Microsoft.ApplicationServer.Caching.DataCache.ExecuteAPI(RequestBody reqMsg, IMonitoringListener listener) +10 Microsoft.ApplicationServer.Caching.DataCache.InternalGetAndLock(String key, TimeSpan timeout, DataCacheLockHandle& lockHandle, String region, Boolean lockKey, IMonitoringListener listener) +227 Microsoft.ApplicationServer.Caching.<>c__DisplayClass78.<GetAndLock>b__77() +103 Microsoft.ApplicationServer.Caching.DataCache.GetAndLock(String key, TimeSpan timeout, DataCacheLockHandle& lockHandle) +258 Microsoft.Web.DistributedCache.<>c__DisplayClass31`1.<PerformCacheOperation>b__30() +19 Microsoft.Web.DistributedCache.DataCacheRetryWrapper.PerformCacheOperation(Action action) +66 Microsoft.Web.DistributedCache.DataCacheForwarderBase.GetAndLock(String key, TimeSpan timeout, DataCacheLockHandle& lockHandle) +190 Microsoft.Web.DistributedCache.BlobBasedSessionStoreProvider.GetItem(HttpContextBase context, String id, Boolean acquireWriteLock, Boolean& locked, TimeSpan& lockAge, Object& lockId, SessionStateActions& actions) +211 Microsoft.Web.DistributedCache.DistributedCacheSessionStateStoreProvider.GetItemExclusive(HttpContext context, String id, Boolean& locked, TimeSpan& lockAge, Object& lockId, SessionStateActions& actions) +125 System.Web.SessionState.SessionStateModule.GetSessionStateItem() +178 System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) +1076 System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +115 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +375

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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272 

I checked the Output window in visual studio and nothing looked wrong. The report is built but nothing is appearing in the Silverlight page.
I also tried to host the report on an asp.net webpage, and put that webpage in a RadHtmlHolder within my silverlight application. The chart were working fine when i was calling the page over http, but not over https(tables were displayed but chart were not there).

Let me know if I need to give you more information, i am stuck for a week on this problem...


UPDATE : Looks like I cannot answer the thread, I am getting an error.

->
Thank you for your answer Steve,


The Out-proc session was already set up and the reports were appearing fine, it is only when i added a chart that it stopped working.
The endpoints were also present. What i ended up doing is hosting it on a local IIS and add http and https endpoint, i also removed Out-proc session and everything worked perfectly.


Our final solution  was to use an Amazon EC2 instance, we moved all our databases and website from Azure to there. Since then the system is 6 times quicker on average and most of the workarounds necessary for Azure are not needed anymore.


Anyway thank you for your support and keep up the good work :)

[Steve]

Hi Ronald,

We've seen this error in the early era of Azure, when it did not support Out-proc session, however this has changed since when they have introduced ASP.NET Session State Provider. In Azure when you use multiple web roles, you have to use an out-proc session i.e. multiple roles act similar to web farm and you need common session. Adding ASP.NET Session State Provider for Windows Azure should prevent any problems with session and reports should appear consistently.

About the charts - they are served by the Telerik Reporting WCF Service, specifically make sure that the resources endpoint is present in your configuration file. Still if the problem is with the resources, then you would not be able to view images in the report as well, can you try?

Also a possible solution to try is hosting the reporting WCF service in a single instance project and use it in your multiple instance project i.e. simply change the ReportServiceUri to the absolute uri of the single instance service e.g.: ReportServiceUri="http://singleinstance.cloudapp.net/ReportService.svc".

The stacktrace you've posted below, does not indicate any Telerik involvement and as we could not find a reasonable explanation after googling for this error, we suggest you contact MS support for help as well. MS have almost no information about dealing with WCF services in Azure, so there might be something obvious in the configuration that is missing.

Regards,
Steve
the Telerik team