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AfterLogic Forum : MailBee SMTP

Topic: SMTP object events

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rubi
Guest Group

Joined: 10 November 2003
Online Status: Online
Posts: 262

Posted: 14 August 2005 at 8:07am \| IP Logged

Hi!
I am evaluating the smtp/ssl product for VB, version 5.2, my question is:
there are 5 events for using the async mail sendin: sent/connected/completed, which is fine, but what if there was an error in the way, what events will i be reported then, because the Send() method is supposed to return immediatedly.

I hope this could be answered
thanx

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2206

Posted: 14 August 2005 at 9:47am \| IP Logged

In the case of error, Send method will return an error rather than raise any event.

For example:

Code:

...

If Not SMTP.Send Then

  MsgBox "Error #" & SMTP.ErrCode

  MsgBox "Last server response:" & _

    SMTP.ServerResponse

End If

This approach does not depend on whether EnableEvents is True or False. You can use it in both cases.

Regards,
Alex

rubi
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Joined: 10 November 2003
Online Status: Online
Posts: 262

Posted: 17 August 2005 at 10:35am \| IP Logged

Sorry for my mistake on the www.iforum.com ...

But still the question is not fully answered, if I fail to connect or fail to send, not an immediate error, but a timeout or dns failure, where will I get the error event.

thanks, and sorry again for my mistake!

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2206

Posted: 17 August 2005 at 12:39pm \| IP Logged

Once error occurred, no matter it's immediate or not, the component will immediately return from async method, and you can check .ErrCode/.ServerResponse properties for error information.

There will be no any delay since error occurred and the component's method finished. So, from error checking point of view, there is no difference between async and sync methods.

Regards,
Alex

rubi
Guest Group

Joined: 10 November 2003
Online Status: Online
Posts: 262

Posted: 18 August 2005 at 3:46am \| IP Logged

thank you for responding but I still havent completely understood how async errors are covered.
I understand that if you give an async method bad parameters, it may return that bad parameters were specified, but if a connect method takes 10 seconds, and the function is async it returns in 1 ms, the error might come after the timeout has reached ... sad, so how do I get the error than?

thanks for holding on

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2206

Posted: 18 August 2005 at 9:46am \| IP Logged

In MailBee, async function does not return until the method is completed (either successfully or not). In other words, it's not exactly "async" in common meaning of this word. It rather means that Windows events are processed while "async" method is executed and UI does not freeze. But from programmer point of view, MailBee "async" method are very similar to ordinary sync methods.

Regards,
Alex

rubi
Guest Group

Joined: 10 November 2003
Online Status: Online
Posts: 262

Posted: 21 August 2005 at 5:02am \| IP Logged

Thanks!
I guess this is a reasonable approach, cuts down the need for multiple timers..

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