(Classic ASP) Async Progress Info Log

Demonstrates checking for progress info updates when running a task asynchronously.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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' All Chilkat classes can be unlocked at once at the beginning of a program
' by calling UnlockBundle.  It requires a Bundle unlock code.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Global")
set chilkatGlob = Server.CreateObject("Chilkat.Global")
success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( chilkatGlob.LastErrorText) & "</pre>"
    Response.End
End If

' The mailman object is used for sending and receiving email.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.MailMan")
set mailman = Server.CreateObject("Chilkat.MailMan")

' Set the SMTP server and any required settings.
mailman.SmtpHost = "smtp.mymailserver.com"
mailman.SmtpUsername = "myLogin"
mailman.SmtpPassword = "myPassword"
mailman.StartTLS = 1

' Create a new email object
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Email")
set email = Server.CreateObject("Chilkat.Email")

email.Subject = "This is a test"
email.Body = "This is a test"
email.From = "Chilkat Support <support@chilkatsoft.com>"
success = email.AddTo("Chilkat Admin","admin@chilkatsoft.com")

' Call the async version of the SendEmail method to return a task object.
' The task object is loaded, but is in the Inert state -- meaning it is
' not yet scheduled to run on Chilkat's background thread pool.
' task is a Chilkat.Task
Set task = mailman.SendEmailAsync(email)
If (mailman.LastMethodSuccess = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( mailman.LastErrorText) & "</pre>"
    Response.End
End If

' Before starting the task, tell it to keep an in-memory log of what would've been
' ProgressInfo event callbacks.
task.KeepProgressLog = 1

' Schedule the task for running on the thread pool.  This changes the task's state
' from Inert to Live.
success = task.Run()
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( task.LastErrorText) & "</pre>"

    Response.End
End If

' The application is now free to do anything else
' while the email is being sent.

' For this example, we'll simply sleep and periodically
' check to see if the SendEmail if finished.  While checking
' however, we'll report on the progress.
curPctDone = 0

Do While task.Finished <> 1

    If (task.PercentDone <> curPctDone) Then
        curPctDone = task.PercentDone
        Response.Write "<pre>" & Server.HTMLEncode( curPctDone & " percent done") & "</pre>"
    End If

    ' Check the progress info log.
    ' Emit any log entries..
    Do While (task.ProgressLogSize > 0)
        ' Get the 1st entry, emit it, and then remove it..
        name = task.ProgressInfoName(0)
        value = task.ProgressInfoValue(0)
        Response.Write "<pre>" & Server.HTMLEncode( name & ": " & value) & "</pre>"
        task.RemoveProgressInfo 0
    Loop

    ' Sleep 100 ms.
    task.SleepMs 100

Loop

' Just in case there are any remaining entries...
Do While (task.ProgressLogSize > 0)
    ' Get the 1st entry, emit it, and then remove it..
    name = task.ProgressInfoName(0)
    value = task.ProgressInfoValue(0)
    Response.Write "<pre>" & Server.HTMLEncode( name & ": " & value) & "</pre>"
    task.RemoveProgressInfo 0
Loop

' A finished task could be one that was canceled, aborted, or truly finished.  

' If the task was "canceled", it was canceled prior to actually starting.  This could
' happen if the task was canceled while waiting in a thread pool queue to be scheduled by Chilkat's
' background thread pool scheduler.  

' If the task was "aborted", it indicates that it was canceled while running in a background thread.  
' The ResultErrorText will likely indicate that the task was aborted.

' If the task "completed", then it ran to completion, but the actual success/failure of the method
' is determined by the result obtained via a GetResult* method.  (A "completed" task will
' have a StatusInt equal to 7.   If the task finished, but was not completed, then it must've
' been aborted or canceled:
If (task.StatusInt <> 7) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Task did not complete.") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "task status: " & task.Status) & "</pre>"

    Response.End
End If

' The SendEmail method returns a boolean.  Therefore, after the task is finished,
' we can get the boolean result by calling GetResultBool.  This is the return value had
' we called SendEmail synchronously.
success = task.GetResultBool()
If (success <> 1) Then
    ' The task's ResultErrorText contains what would have been in the LastErrorText property had
    ' the SendEmail method been called synchronously.
    Response.Write "<pre>" & Server.HTMLEncode( task.ResultErrorText) & "</pre>"
Else
    Response.Write "<pre>" & Server.HTMLEncode( "Email sent asynchronously.") & "</pre>"
End If

success = mailman.CloseSmtpConnection()
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Connection to SMTP server not closed cleanly.") & "</pre>"

End If


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