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Class java.net.DatagramSocketImpl

java.lang.Object
   |
   +----java.net.DatagramSocketImpl

public abstract class DatagramSocketImpl

extends Object

implements SocketOptions

fd

The file descriptor object

localPort

DatagramSocketImpl()

bind(int, InetAddress)

Binds a datagram socket to a local port and address.

close()

Close the socket.

create()

Creates a datagram socket

getFileDescriptor()

Get the datagram socket file descriptor

getLocalPort()

Get the local port.

getOption(int)

Fetch the value of an option.

getTTL()

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

join(InetAddress)

Join the multicast group.

leave(InetAddress)

Leave the multicast group.

peek(InetAddress)

Peek at the packet to see who it is from.

receive(DatagramPacket)

Receive the datagram packet.

send(DatagramPacket)

Sends a datagram packet.

setOption(int, Object)

Enable/disable the option specified by optID.

setTTL(byte)

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

 protected int localPort

 protected FileDescriptor fd

The file descriptor object

 public DatagramSocketImpl()

 protected abstract void create() throws SocketException

Creates a datagram socket

 protected abstract void bind(int lport,
                              InetAddress laddr) throws SocketException

Binds a datagram socket to a local port and address.

 protected abstract void send(DatagramPacket p) throws IOException

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

Parameters:

packet - to be sent.

 protected abstract int peek(InetAddress i) throws IOException

Peek at the packet to see who it is from.

Parameters:

return - the address which the packet came from.

 protected abstract void receive(DatagramPacket p) throws IOException

Receive the datagram packet.

Parameters:

Packet - Received.

 protected abstract void setTTL(byte ttl) throws IOException

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

Parameters:

TTL - to be set.

 protected abstract byte getTTL() throws IOException

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

 protected abstract void join(InetAddress inetaddr) throws IOException

Join the multicast group.

Parameters:

multicast - address to join.

 protected abstract void leave(InetAddress inetaddr) throws IOException

Leave the multicast group.

Parameters:

multicast - address to leave.

 protected abstract void close()

Close the socket.

 protected int getLocalPort()

Get the local port.

 protected FileDescriptor getFileDescriptor()

Get the datagram socket file descriptor

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