'Declaration
 
Public Overloads Function Send( _
   ByVal buffer As String, _
   ByVal hostNameOrAddress As String, _
   ByVal port As Integer _
) As Datagram

'Usage
 
Dim instance As UdpBase
Dim buffer As String
Dim hostNameOrAddress As String
Dim port As Integer
Dim value As Datagram
 
value = instance.Send(buffer, hostNameOrAddress, port)

public Datagram Send( 
   string buffer,
   string hostNameOrAddress,
   int port
)

public: Datagram* Send( 
   string* buffer,
   string* hostNameOrAddress,
   int port
) 

public:
Datagram^ Send( 
   String^ buffer,
   String^ hostNameOrAddress,
   int port
) 

Parameters

buffer

A string containing the data to send.

hostNameOrAddress

The host address (either dot address or hostname) to send the datagram to.

port

The host port to send the datagram to.

Return Value

Use the Send method to sent a datagram created from the data contained in buffer to the specified hostNameOrAddress and port. buffer is converted to a byte array before sending.

A UDP datagram provides little functionality over an IP datagram, adding a port number field (allows demultiplexing on the receiving host) and a checksum field (provides basic error handling). Unlike TCP, UDP datagrams are sent as a unit. If Send is called 3 times to send 3 datagrams to a host, the receiving host will have to call Receive 3 times. Also, the size of each datagram sent will equal the size of each datagram received by the receiving host. In addition, since UDP is a connectionless protocol, any datagrams sent to the host are not guaranteed to be delivered. Therefore, any required error checking (outside of UDP's checksum implementation) will have to be done by the application-layer protocol.

To send a broadcast datagram, use "255.255.255.255" as the remote address. To send a multicast datagram, use the multicast group address as the remote address after first joining a multicast group by using JoinMulitcastGroup.

Reference

UdpBase Class
UdpBase Members
Overload List