IP*Works! dns Component : dns OCX, dns .NET Component, dns Class, dns Bean, dns Object

Available in: IP*WORKS!

DNS Component [IP*Works! V8]

Properties Methods Events Configuration Settings

The DNS component is used to query DNS for record information.

NOTE: What follows is a very short description of the component interfaces. For more information, please consult the help files that come with the respective package.

Remarks

The DNS component queries a DNS server for records as specified in RFC 1035 and other relevant RFCs. The component property QueryType indicates the record to be queried. Calling Query will initiate the query.

Once the query is complete, a single Response event will fire and the record properties will be filled. StatusCode is the server's success or fail code, and Status is a standard string interpretation of the code.

The records are contained in the Records properties . The programming interface is designed to allow a full walk of the records in the DNS response, including provisions for handling new record types.

The component operates synchronously by default (waits for a response before returning control to the caller), however, the component may also operate asynchronously (return control immediately), by setting Timeout to 0. Please refer to the Timeout property for more information.

Property List

The following is the full list of the properties of the component with short descriptions. Click on the links for further details.


DNSPort	The port to connect to on the DNS Server.
DNSServer	The address of the DNS Server.
Idle	The current status of the component.
LocalHost	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
QueryType	The record type to query.
Records	Collection of records in the last response.
RecordSource	The source of records provided in the Records properties .
Recursive	Determines whether to ask the DNSServer to recursively query other servers.
RequestId	The id of the current DNS request.
Status	A standard string interpretation of StatusCode .
StatusCode	The success or error code for the DNS query.
Timeout	A timeout for the component.

Method List

The following is the full list of the methods of the component with short descriptions. Click on the links for further details.


Config	Sets or retrieves a configuration setting.
DoEvents	Processes events from the internal message queue.
GetFieldValue	Get the value of the field indicated from a record.
Interrupt	Interrupt the current method.
Query	Query a Domain

Event List

The following is the full list of the events fired by the component with short descriptions. Click on the links for further details.


Error	Information about errors during data delivery.
Response	Fires after a DNS query.

Configuration Settings

The following is a list of configuration settings for the component with short descriptions. Click on the links for further details.


MaxPacketSize	The maximum length of the packets that can be received.
ShareLocalPort	If set to True, allows more than one instance of the component to be active on the same local port.
UseConnection	Determines whether to use a connected socket.
QOSTrafficType	Used to specify QOS/DSCP settings (optional).
UseIPv6	Whether or not to use IPv6.
AbsoluteTimeout	Determines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallData	Used to send extra data to the firewall.
InBufferSize	The size in bytes of the incoming queue of the socket.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
CodePage	The system code page used for Unicode to Multibyte translations (Windows/COM only).