Question

The underlying connection was closed: The connection was closed unexpectedly in WCF service

Asked by: P_Ramprathap

I am using WCF service to fetch  recordsets and it returns some two thousand records, when its coming back to proxy/UI layer it throws an error:
     The underlying connection was closed: The connection was closed unexpectedly
Please sugguest what to do for this. Also it was working with some less data like 100-200 records.

I have enlosed the Web.config section for my App and Service layer

Application 
 
<system.serviceModel>
     <bindings>
          <basicHttpBinding>
               <binding name="BasicHttpBinding_IMyService"  closeTimeout="04:30:00" openTimeout="04:30:00" receiveTimeout="04:30:00" maxBufferSize="2147483647"  maxReceivedMessageSize="2147483647" transferMode="Streamed">
                    <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"/>
                </binding>
,...
....
..
 
 
WCF Service 
 
 <system.serviceModel>
    <bindings>
      <basicHttpBinding>
          <binding name="basicHttpBinding_IMyService" maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" transferMode="Streamed"/>
....
.....

                                  
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Asked On
2009-09-22 at 03:27:53ID24750974
Tags

ASP.NET

,

WCF

,

.NET 3.0

Topic

Web Services and WCF

Participating Experts
2
Points
500
Comments
5

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Answers

 

by: DarrenDPosted on 2009-09-22 at 06:07:38ID: 25392325

Hi,

I had a similar problem but it occurred when returning an array list of custom objects.

Just a thought...

Darren

        <behaviors>
          <endpointBehaviors>
            <behavior name="ServiceViewEventBehavior">
              <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
            </behavior>
          </endpointBehaviors>
        </behaviors>

                                              
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by: DarrenDPosted on 2009-09-22 at 06:08:27ID: 25392337

This goes into the app.config file on the client...

 

by: P_RamprathapPosted on 2009-09-22 at 19:14:06ID: 25399549

i'm still facing the issue , i have similar issue as urs , i return Array list of custom objects

 

by: DarrenDPosted on 2009-09-23 at 01:29:29ID: 25400914

Hi again,

I forgot you have to put this into the web.config on the service side '<dataContractSerializer maxItemsInObjectGraph="2147483647"/>'

See below

        <behavior name="Services.BookingBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>


If that still does not work you can turn on WCF Logging and Tracing to see if you can track down the error that way?

If you Open your service config 'Web.Config' and 'App.Config' files in Service Configuration Editor (SvcConfigEditor.exe) and turn on Logging and Tracing from the Diagnostics node you may be able to get some more information on your exact error.

Cheers,

Darren

 

by: windsurfkidPosted on 2009-09-23 at 08:59:23ID: 25404708

HI there

We have a very large application based on web services, though .net 2.0. This error occurs with us when the http keep alive in IIS was too small, or a proxy server is closing the tcp connection or http connection too soon.

Do you have other services running whcih work? It seems strange to me that you get this particular one that gets disconnected based on the type of data it was returning. I suspect it may be something to do with the data link between your client and server rather than an application problem.

Does the service take a long time ot execute?
Does the service fail every time you try and use it or  just periodically?
Do you have some code examples of your service to look at?

many thanks

Jamie

20120131-EE-VQP-002

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