Exception "Could not access server"

Michael_Grantham

 We're using EWS in a windows environment from a .NET desktop application. Every now and then (almost 30%) while trying to access nodes using the GetNode or ListNodes option we get the "could not access server" exception.

Retrying the request usually solves the problem.

Has anyone else seen this behaviour/knows the reason behind it?

Thanks!

 

I'm attaching the Stack Trace below:

System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: Could not access server (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:

OpenText.Livelink.Service.Core.ServiceException: Could not access server

   at OpenText.Livelink.Service.Core.ExceptionUtil.handleException(Exception ex)

   at OpenText.Livelink.Service.DocMan.DocumentManagement.ListNodes(Int32 parentID, Boolean partialData)

   at OpenText.Livelink.Service.DocMan.DocumentManagement_WCF.ListNodes(ListNodesRequest request)

   at SyncInvokeListNodes(Object , Object[] , Object[] )

   at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)

   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)

   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)

   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)

   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)

   at System.Ser...).

 

Kyle_Swidrovich

Hello Michael,

 

How quickly are you issuing subsequentrequests?

If you hammer the server with too manyrequests, the server’s dynamic port range could be exhausted with open ephemeral(ghost) ports, effectively preventing new connections from being accepted.

Please read this MS article on these portsin 2008:

 

http://support.microsoft.com/kb/929851

 

Users of LAPI had a similar issue if theirapplication was too aggressive with Content Server requests.

Please see this OTKB article for moreinformation:

 

https://knowledge.opentext.com/go/3500936

 

Regards,

_________________________________________

Kyle Swidrovich

Principal Search / SDK Product Specialist
Livelink Escalations Support Team
Open Text Corporation

275 Frank Tompa Dr.
Waterloo, ON, CANADA

Phone : +1-800-540-7292
Online: http://support.opentext.com
_________________________________________

From: eLink Entry:Enterprise Web Services 9.7.1 Forum[mailto:otdnenterprisewebservices971forum@elinkkc.opentext.com]
Sent: Wednesday, February 17, 201011:39 AM
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Subject: Exception "Could notaccess server"

 

Exception "Could not access server"

Posted by m.grantham@iaea.org (Grantham, Michael) On 2010/02/17 11:35

 

We're using EWS in a windows environment from a .NET desktop application. Every now and then (almost 30%) while trying to access nodes using the GetNode or ListNodes option we get the "could not access server" exception. Retrying the request usually solves the problem. Has anyone else seen this behaviour/knows the reason behind it? Thanks!   I'm attaching the Stack Trace below: System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: Could not access server (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is: OpenText.Livelink.Service.Core.ServiceException: Could not access server    at OpenText.Livelink.Service.Core.ExceptionUtil.handleException(Exception ex)    at OpenText.Livelink.Service.DocMan.DocumentManagement.ListNodes(Int32 parentID, Boolean partialData)    at OpenText.Livelink.Service.DocMan.DocumentManagement_WCF.ListNodes(ListNodesRequest request)    at SyncInvokeListNodes(Object , Object[] , Object[] )    at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)    at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)    at System.Ser...).

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