The request channel timed out while waiting for a reply after 00:00:59

I am writing a very basic SharePoint webservice. I tested against 2010 small library and it works just fine every time.

Issue comes with MOSS 2007 server where a library is very big. I am using .Net 3.5 and with just below three lines of code, randomly I get error, The request channel timed out while waiting for a reply after 00:00:59. If I increase timeout then still randomly I get error, The underlying connection was closed: The connection was closed unexpectedly.

ListsSoapClient client = new ListsSoapClient(); client.ClientCredentials.Windows.ClientCredential = System.Net.CredentialCache.DefaultNetworkCredentials; client.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation; XmlElement listCollection = client.GetListCollection(); 

I have no clue why randomly it times out and breaks, server has no issues. I have U2U CAML builder and using it I can nonstop execute query and get results back instantly.

I think there is something wrong at my app.config or something I need to set in client side.

My app.config has below setting,

 <binding name="ListsSoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"> <security mode="TransportCredentialOnly"> <transport clientCredentialType="Ntlm"/> <message clientCredentialType="UserName" algorithmSuite="Default"/> </security> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> </binding> 

And

 <client> <endpoint address="http://ap/AP/_vti_bin/Lists.asmx" binding="basicHttpBinding" bindingConfiguration="ListsSoap" contract="SharePointListWebService.ListsSoap" name="ListsSoap" /> <endpoint address="http://ap/AP/_vti_bin/Copy.asmx" binding="basicHttpBinding" bindingConfiguration="CopySoap" contract="SharePointCopyWebService.CopySoap" name="CopySoap" /> </client> 

I receive below error when I chnage all time out to 10 minute. And again, its random.

 Unhandled Exception: System.ServiceModel.CommunicationException: The underlying connection was closed: A connection that was expected to be kept alive was close d by the server. ---> System.Net.WebException: The underlying connection was clo sed: A connection that was expected to be kept alive was closed by the server. at System.Net.HttpWebRequest.GetResponse() at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpCha nnelRequest.WaitForReply(TimeSpan timeout) --- End of inner exception stack trace --- Server stack trace: at System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebExc eption(WebException webException, HttpWebRequest request, HttpAbortReason abortR eason) at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpCha nnelRequest.WaitForReply(TimeSpan timeout) at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeS pan timeout) at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message messag e, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean on eway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan tim eout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean on eway, ProxyOperationRuntime operation, Object[] ins, Object[] outs) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCall Message methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage req Msg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgDa ta, Int32 type) at FetchInvoicesFromSharePointForMaximo.SharePointListWebService.ListsSoap.Ge tListCollection(GetListCollectionRequest request) at FetchInvoicesFromSharePointForMaximo.SharePointListWebService.ListsSoapCli ent.FetchInvoicesFromSharePointForMaximo.SharePointListWebService.ListsSoap.GetL istCollection(GetListCollectionRequest request) in C:\FetchInvoicesFromSharePoin tForMaximo\FetchInvoicesFromSharePointForMaximo\Service References\SharePointLis tWebService\Reference.cs:line 2267 at FetchInvoicesFromSharePointForMaximo.SharePointListWebService.ListsSoapCli ent.GetListCollection() in C:\FetchInvoicesFromSharePointForMaximo\FetchInvoices FromSharePointForMaximo\Service References\SharePointListWebService\Reference.cs :line 2273 at FetchInvoicesFromSharePointForMaximo.Program.Main(String[] args) in C:\Fet chInvoicesFromSharePointForMaximo\FetchInvoicesFromSharePointForMaximo\Program.c s:line 32