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

Available in: IP*WORKS!

Udpport Class

UDPPort Component [IP*Works! V8]

Properties Methods Events Configuration Settings

The UDPPort component is used to facilitate UDP (datagram) communications. It can act both as a client and a server and communicate with any number of hosts simultaneously, as well as generate and receive broadcast packets.

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 interface of the component is similar to the interface of IPPort, only much simpler. The component is activated/deactivated through the Active property. This property enables or disables sends or receives. The data can be sent in the same way as IPPort, using the Send method and specifying the text to send. This is identical to assigning data to the DataToSend property. The destination is specified using the RemoteHost and RemotePort properties. Inbound data is received through the DataIn event.

If the UseConnection config setting is set to True, then a local association is created with the remote host. Otherwise, the component can receive datagrams (packets) from any host, and send datagrams to any host. Packets can be broadcasted on the local net by setting the destination (RemoteHost) to 255.255.255.255.

The operation of the component is almost completely asynchronous. All calls, except the ones that deal with domain name resolution, operate through Windows messages (no blocking calls). The gain in performance is considerable when compared to using blocking calls.

Property List

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


AcceptData	Enables or disables data reception (the DataIn event).
Active	Enables or disables sending and receiving of data.
DataToSend	A string of data to be sent to the remote host. Write-only property.
DontRoute	If set to True, forces the socket to send data directly to interface (no routing).
LocalHost	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
LocalPort	The UDP port in the local host where UDPPort binds.
RemoteHost	The address of the remote host. Domain names are resolved to IP addresses.
RemotePort	The UDP port in the remote host.
TimeToLive	The maximum number of subnets that a datagram can traverse.

Method List

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


Config	Sets or retrieves a component configuration setting.
DoEvents	Processes events from the internal message queue.
Send	Send data to the remote host.

Event List

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


DataIn	Fired when data is received.
Error	Information about errors during data delivery.
ReadyToSend	Fired when the component is ready to send data.

Configuration Settings

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


AbsoluteTimeout	Determines whether timeouts are inactivity timeouts or absolute timeouts.
CodePage	The system code page used for Unicode to Multibyte translations (Windows/COM only).
FirewallData	Used to send extra data to the firewall.
InBufferSize	The size in bytes of the incoming queue of the socket.
MaxPacketSize	The maximum length of the packets that can be received.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
QOSFlags	Flags determining Quality Of Service bits of packets sent by the socket.
ShareLocalPort	If set to True, allows more than one instance of the component to be active on the same local port.
SocketHandle	The handle of the main socket used by the component.
UseConnection	Determines whether to use a connected socket.
WinsockInfo	Identifying information about the loaded Winsock stack (Windows only)
WinsockLoaded	Loads and unloads Winsock on demand (Windows only)
WinsockMaxDatagramSize	Size in bytes of the largest UDP datagram that can be sent or received (Windows only)
WinsockMaxSockets	Maximum number of sockets available to a single process (Windows only)
WinsockPath	The path to the Winsock DLL used (Windows only)
WinsockStatus	The status of the Winsock stack (Windows only)