Hi,

I'am developping à windows forms application in VS 2005 using a web service asp.net in VB and something and sometime, not at the same place, aspnet_wp.exe is crashing.

The client call a function on the server ( in the web service ) and when the process is terminated, the web service return an answer (true or false). The process take above 15 minutes to execute. Sometime it work, sometime it not work. I call the web service in ASynch mode, using handler when the process is terminated.

Here is the error (client side):

System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
   at System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult)
   at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
   --- End of inner exception stack trace ---
   at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
   at System.Net.PooledStream.EndRead(IAsyncResult asyncResult)
   at System.Net.Connection.ReadCallback(IAsyncResult asyncResult)
   --- End of inner exception stack trace ---
   at System.Web.Services.Protocols.WebClientAsyncResult.WaitForResponse()
   at System.Web.Services.Protocols.WebClientProtocol.EndSend(IAsyncResult asyncResult, Object& internalAsyncState, Stream& responseStream)
   at System.Web.Services.Protocols.SoapHttpClientProtocol.InvokeAsyncCallback(IAsyncResult result)

Here is my error in the application event log on the server (I have use the UnhandledExceptionModule.dll module to have more details but I dont found what is the error...:

Event Type: Error
Event Source: ASP.NET 2.0.50727.0
Event Category: None
Event ID: 0
Date:  2006-12-07
Time:  16:42:03
User:  N/A
Computer: MINGEOPRUEBA
Description:
The description for Event ID ( 0 ) in Source ( ASP.NET 2.0.50727.0 ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event:

UnhandledException logged by UnhandledExceptionModule.dll:

appId=/LM/W3SVC/1/Root/Mingeo_Predial

type=System.CannotUnloadAppDomainException

message=Error while unloading appdomain. (Exception from HRESULT: 0x80131015)

stack=
   at System.AppDomain.Unload(AppDomain domain)
   at System.Web.HttpRuntime.ReleaseResourcesAndUnloadAppDomain(Object state)
   at System.Threading._ThreadPoolWaitCallback.WaitCallback_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)

.

I dont know what is AppDomain but I dont use any of this appelation in my code. I realy need help!

Thank you very much.