wodSmtp ActiveX Control - DNSResponse Method
 DNSResponse Method
      
 

Description

Called when DNS query returns.


Return Type

None  


Syntax

object.DNSResponse Owner, Address, Response, Success, ID



The DNSResponse Method syntax has these parts:

Part Description
object An expression evaluating to an object of type wodSmtpClientNotify.
Owner A wodSmtpCom object. Reference to wodSmtpCom instance that called this callback method.
Address A String value. Hostname or domain that was to be resolved.
Response A String value. Contains response data returned by the server.
Success A Boolean value. Determine if response was successful or not.
ID A Variant value. Variant value you supplied in QueryDNS method.

Remarks

NOTE: This method is called only if you implemented IwodSmtpClientNotify interface in your application, and wodSmtp1.Notification property has received reference to instance of your implementation.

DNSResponse notification method is called when response is received from your QueryDNS method call. Response argument will contain result of your query. If it was successful, Success argument will contain True, and Response will not be empty. It is possible for Success to be True and Response to have empty string - meaning your request was not resolvable at all, in other words there was no response for your query, although packets were received by DNS server.

DNSResponse will not be called until timeout expires (as set through QueryDNS method), or response is received by the server. If server replies with answer that was not expected, recursive queries are automatically resent by wodSmtp. For example, DNS server may reply that it's not authoritative for your query and will point you to another DNS server. wodSmtp will automatically resend the request - until response is received or timeout expires.

ID argument will hold whatever you put in QueryDNS'es ID argument.