Workflow web service unable to call another external web service.

Hi All,

I'm trying to invoke an external web service within my Windows Workflow Foundation Workflow Web Service.

I get the following error message:

System.ApplicationException: Workflow terminated unexpectedly while processing the current request. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:49868
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
   --- End of inner exception stack trace ---
   at System.Workflow.Activities.InvokeWebServiceActivity.Execute(ActivityExecutionContext executionContext)
   at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(T activity, ActivityExecutionContext executionContext)
   at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(Activity activity, ActivityExecutionContext executionContext)
   at System.Workflow.ComponentModel.ActivityExecutorOperation.Run(IWorkflowCoreRuntime workflowCoreRuntime)
   at System.Workflow.Runtime.Scheduler.Run()
   --- End of inner exception stack trace ---
   at System.Workflow.Activities.WorkflowWebService.Invoke(Type interfaceType, String methodName, Boolean isActivation, Object[] parameters)
   at WinComm_iSolutions_Workflows.iSolutions_LoginWF_WebService.CheckLoginDetails(String loginName, String loginPwd, String connStr) in C:\Users\Administrator\AppData\Local\Temp\ia9xr1bf.vb:line 38

Please kindly assist.

Thank you in advance.

Best Regards,

leroylll

Re: Workflow web service unable to call another external web service.

What account is the WorkFlow Foundation Web Service running under? Is it a domain that has acess to get out through the firewall.

Re: Workflow web service unable to call another external web service.

localhost

Re: Workflow web service unable to call another external web service.

leroylll
localhost

Please contact your network Administrator for a network service account with the required priviledges.

Re: Workflow web service unable to call another external web service.

its hosted using the visual studio development server.

Re: Workflow web service unable to call another external web service.

Do you have network administrator rights?

Re: Workflow web service unable to call another external web service.

yes... please advice.

Re: Workflow web service unable to call another external web service.

i tried to invoke another web service, there was no error. Attached below is my web service code. Please kind advice on any mistakes (if any).

Thank you.

Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.ComponentModel
Imports Microsoft.Practices.EnterpriseLibrary.Security.Cryptography
Imports Microsoft.VisualBasic

' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
<System.Web.Script.Services.ScriptService()> _
<System.Web.Services.WebService(Namespace:="http://tempuri.org/")> _
<System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<ToolboxItem(False)> _
Public Class WSSecurity
    Inherits System.Web.Services.WebService

    Protected Const _DESStr As String = "DESCryptoServiceProvider"
    Protected Const _RDMStr As String = "RijndaelManaged"

    <WebMethod()> _
    Public Function EncryptDES(ByVal EncryptStr As String) As String
        Return Cryptographer.EncryptSymmetric(_DESStr, EncryptStr)
    End Function

    <WebMethod()> _
    Public Function DecryptDES(ByVal DecryptStr As String) As String
        Return Cryptographer.DecryptSymmetric(_DESStr, DecryptStr)
    End Function

    <WebMethod()> _
    Public Function EncryptRDM(ByVal EncryptStr As String) As String
        Return Cryptographer.EncryptSymmetric(_RDMStr, EncryptStr)
    End Function

    <WebMethod()> _
    Public Function DecryptRDM(ByVal DecryptStr As String) As String
        Return Cryptographer.DecryptSymmetric(_RDMStr, DecryptStr)
    End Function
End Class

Re: Workflow web service unable to call another external web service.

To create a Network Service Account

As for creating any account
but tick password cannot expire
and tick "user cannot change password"
Choose a complex password like "A1h4%w£0j5!" and save it in a secure file
If a particular group is used for external access, add the user to that group
Strictly speaking, interactive logon should be disabled for that account

You will need to grant explicit permissions for this account.

Re: Workflow web service unable to call another external web service.

TATWORTH

To create a Network Service Account

As for creating any account
but tick password cannot expire
and tick "user cannot change password"
Choose a complex password like "A1h4%w£0j5!" and save it in a secure file
If a particular group is used for external access, add the user to that group
Strictly speaking, interactive logon should be disabled for that account

You will need to grant explicit permissions for this account.

i'm using windows server 2008 as my development OS, please kindly assist.

Re: Workflow web service unable to call another external web service.

leroylll
i'm using windows server 2008 as my development OS, please kindly assist.

Is it a member of a workgroup or a domain?

Re: Workflow web service unable to call another external web service.

TATWORTH

leroylll
i'm using windows server 2008 as my development OS, please kindly assist.

Is it a member of a workgroup or a domain?

no.... just local standalone machine.

Re: Workflow web service unable to call another external web service.

leroylll
no.... just local standalone machine.

In which case you are using much the same setup as I am using at the moment.

Select:

Administrative Tools...Computer Management
Expand "Local Users and Groups"
Right Click and select New user
Enter new account name
Exter complex password as discussed earlier
Clear "User must change password at next logon"
Check "User cannot change password"
Check "Password Never Expires"
Click Create

Re: Workflow web service unable to call another external web service.

TATWORTH

leroylll
no.... just local standalone machine.

In which case you are using much the same setup as I am using at the moment.

Select:

Administrative Tools...Computer Management

Expand "Local Users and Groups"

Right Click and select New user

Enter new account name
Exter complex password as discussed earlier

Clear "User must change password at next logon"
Check "User cannot change password"
Check "Password Never Expires"
Click Create

its strange... i din need to do the above steps and my workflow web service is able to call other web services. its just this strange one that does not work.