Binds a datagram socket to a local port and address.

lport	the local port
laddr	the local address
Throws	SocketException: if there is an error in the underlying protocol, such as a TCP error.

Connects a datagram socket to a remote destination. This associates the remote address with the local socket so that datagrams may only be sent to this destination and received from this destination. This may be overridden to call a native system connect.

If the remote destination to which the socket is connected does not exist, or is otherwise unreachable, and if an ICMP destination unreachable packet has been received for that address, then a subsequent call to send or receive may throw a PortUnreachableException. Note, there is no guarantee that the exception will be thrown.

address	the remote InetAddress to connect to
port	the remote port number
Throws	SocketException: may be thrown if the socket cannot be connected to the remote destination
since	1.4

Creates a datagram socket.

Throws

SocketException: if there is an error in the underlying protocol, such as a TCP error.

Disconnects a datagram socket from its remote destination.

since

1.4

Join the multicast group.

inetaddr	multicast address to join.
Throws	IOException: if an I/O exception occurs while joining the multicast group.

Join the multicast group.

mcastaddr	address to join.
netIf	specifies the local interface to receive multicast datagram packets
Throws	IOException: if an I/O exception occurs while joining the multicast group
since	1.4

Leave the multicast group.

inetaddr	multicast address to leave.
Throws	IOException: if an I/O exception occurs while leaving the multicast group.

Leave the multicast group.

mcastaddr	address to leave.
netIf	specified the local interface to leave the group at
Throws	IOException: if an I/O exception occurs while leaving the multicast group
since	1.4

Peek at the packet to see who it is from. Updates the specified InetAddress to the address which the packet came from.

i	an InetAddress object
return	the port number which the packet came from.
Throws	IOException: if an I/O exception occurs
Throws	PortUnreachableException: may be thrown if the socket is connected to a currently unreachable destination. Note, there is no guarantee that the exception will be thrown.

Peek at the packet to see who it is from. The data is copied into the specified DatagramPacket. The data is returned, but not consumed, so that a subsequent peekData/receive operation will see the same data.

p	the Packet Received.
return	the port number which the packet came from.
Throws	IOException: if an I/O exception occurs
Throws	PortUnreachableException: may be thrown if the socket is connected to a currently unreachable destination. Note, there is no guarantee that the exception will be thrown.
since	1.4

Receive the datagram packet.

p	the Packet Received.
Throws	IOException: if an I/O exception occurs while receiving the datagram packet.
Throws	PortUnreachableException: may be thrown if the socket is connected to a currently unreachable destination. Note, there is no guarantee that the exception will be thrown.

Sends a datagram packet. The packet contains the data and the destination address to send the packet to.

p	the packet to be sent.
Throws	IOException: if an I/O exception occurs while sending the datagram packet.
Throws	PortUnreachableException: may be thrown if the socket is connected to a currently unreachable destination. Note, there is no guarantee that the exception will be thrown.

Gets the datagram socket file descriptor.

return

a FileDescriptor object representing the datagram socket file descriptor

Gets the local port.

return

an int representing the local port value

Set the TTL (time-to-live) option.

ttl	an int specifying the time-to-live value
Throws	IOException: if an I/O exception occurs while setting the time-to-live option.
See also	getTimeToLive()

Retrieve the TTL (time-to-live) option.

Throws	IOException: if an I/O exception occurs while retrieving the time-to-live option
return	an int representing the time-to-live value
See also	setTimeToLive(int)

Set the TTL (time-to-live) option.

ttl	a byte specifying the TTL value
deprecated	use setTimeToLive instead.
Throws	IOException: if an I/O exception occurs while setting the time-to-live option.
See also	getTTL()

Retrieve the TTL (time-to-live) option.

Throws	IOException: if an I/O exception occurs while retrieving the time-to-live option
deprecated	use getTimeToLive instead.
return	a byte representing the TTL value
See also	setTTL(byte)