Visual FoxPro

Transition from Email.GetDsnFinalRecipients to Email.GetDsnInfo

Provides instructions for replacing deprecated GetDsnFinalRecipients method calls with GetDsnInfo. Visual FoxPro

LOCAL lnSuccess
LOCAL loEmail
LOCAL loSa
LOCAL i
LOCAL lnCount
LOCAL loJson
LOCAL lcRecipient

lnSuccess = 0

loEmail = CreateObject('Chilkat.Email')

* Load a multipart/report DSN email.
lnSuccess = loEmail.LoadEml("qa_data/eml/dsn_example.eml")
IF (lnSuccess = 0) THEN
    ? loEmail.LastErrorText
    RELEASE loEmail
    CANCEL
ENDIF

* ------------------------------------------------------------------------
* The GetDsnFinalRecipients method is deprecated:

loSa = loEmail.GetDsnFinalRecipients()
IF (loEmail.LastMethodSuccess = 0) THEN
    ? loEmail.LastErrorText
    RELEASE loEmail
    CANCEL
ENDIF

i = 0
lnCount = loSa.Count
DO WHILE i < lnCount
    ? STR(i) + ": " + loSa.GetString(i)
    i = i + 1
ENDDO
? "----"

RELEASE loSa

* ------------------------------------------------------------------------
* Do the equivalent using GetDsnInfo.
* Your application creates a new, empty JsonObject object which is passed 
* in the last argument and filled upon success.

loJson = CreateObject('Chilkat.JsonObject')
lnSuccess = loEmail.GetDsnInfo(loJson)
IF (lnSuccess = 0) THEN
    ? loEmail.LastErrorText
    RELEASE loEmail
    RELEASE loJson
    CANCEL
ENDIF

loJson.EmitCompact = 0
? loJson.Emit()
? "----"

* The JSON contains the following:

* {
*   "reporting-mta": "dns; mail.example.com",
*   "received-from-mta": "dns; smtp.example.com",
*   "arrival-date": "Fri, 8 May 2025 14:23:42 -0400",
*   "final-recipient": [
*     "rfc822; alice@example.com",
*     "rfc822; bob@example.com",
*     "rfc822; carol@example.com"
*   ],
*   "action": "failed",
*   "status": "5.1.1",
*   "remote-mta": "dns; smtp.recipientdomain.com",
*   "diagnostic-code": "smtp; 550 5.1.1 User unknown",
*   "last-attempt-date": "Fri, 8 May 2025 14:23:42 -0400",
*   "action": "failed",
*   "status": "5.1.2",
*   "remote-mta": "dns; smtp.recipientdomain.com",
*   "diagnostic-code": "smtp; 550 5.1.2 Host unknown (Domain name not found)",
*   "last-attempt-date": "Fri, 8 May 2025 14:23:42 -0400",
*   "action": "failed",
*   "status": "5.7.1",
*   "remote-mta": "dns; smtp.recipientdomain.com",
*   "diagnostic-code": "smtp; 550 5.7.1 Relay access denied",
*   "last-attempt-date": "Fri, 8 May 2025 14:23:42 -0400"
* }

* Iterate over the final-recipients
i = 0
lnCount = loJson.SizeOfArray("final-recipient")
DO WHILE i < lnCount
    loJson.I = i
    lcRecipient = loJson.StringOf("final-recipient[i]")
    ? STR(i) + ": " + lcRecipient

    i = i + 1
ENDDO

* -------------------------------------------------------------------------------------------
* -------------------------------------------------------------------------------------------
* This is the contents of the dsn_example.eml used for this example:

* From: postmaster@example.com
* To: sender@example.com
* Subject: Delivery Status Notification (Failure)
* MIME-Version: 1.0
* Content-Type: multipart/report; report-type=delivery-status;
*     boundary="boundary-string"
* 
* --boundary-string
* Content-Type: text/plain; charset=us-ascii
* 
* This is an automatically generated Delivery Status Notification.
* 
* Delivery to the following recipients failed permanently:
* 
*     alice@example.com
*     bob@example.com
*     carol@example.com
* 
* Technical details of permanent failure:
* DNS Error: Domain name not found
* 
* --boundary-string
* Content-Type: message/delivery-status
* 
* Reporting-MTA: dns; mail.example.com
* Received-From-MTA: dns; smtp.example.com
* Arrival-Date: Fri, 8 May 2025 14:23:42 -0400
* 
* Final-Recipient: rfc822; alice@example.com
* Action: failed
* Status: 5.1.1
* Remote-MTA: dns; smtp.recipientdomain.com
* Diagnostic-Code: smtp; 550 5.1.1 User unknown
* Last-Attempt-Date: Fri, 8 May 2025 14:23:42 -0400
* 
* Final-Recipient: rfc822; bob@example.com
* Action: failed
* Status: 5.1.2
* Remote-MTA: dns; smtp.recipientdomain.com
* Diagnostic-Code: smtp; 550 5.1.2 Host unknown (Domain name not found)
* Last-Attempt-Date: Fri, 8 May 2025 14:23:42 -0400
* 
* Final-Recipient: rfc822; carol@example.com
* Action: failed
* Status: 5.7.1
* Remote-MTA: dns; smtp.recipientdomain.com
* Diagnostic-Code: smtp; 550 5.7.1 Relay access denied
* Last-Attempt-Date: Fri, 8 May 2025 14:23:42 -0400
* 
* --boundary-string
* Content-Type: message/rfc822
* 
* Return-Path: <sender@example.com>
* Received: from smtp.example.com (smtp.example.com [192.168.1.10])
*     by mail.example.com (Postfix) with ESMTP id 123456789
*     for <alice@example.com>, <bob@example.com>, <carol@example.com>;
*     Fri, 8 May 2025 14:23:42 -0400
* Message-ID: <001a113d789f$ad34bc30$038e34b0$@example.com>
* From: Sender Name <sender@example.com>
* To: alice@example.com, bob@example.com, carol@example.com
* Subject: Test Message
* Date: Fri, 8 May 2025 14:20:00 -0400
* Content-Type: text/plain; charset="us-ascii"
* 
* This is a test email message sent to multiple recipients.
* --boundary-string--
* 

RELEASE loEmail
RELEASE loJson