java.net
Class DatagramSocketImpl

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

All Implemented Interfaces:

SocketOptions

public abstract class DatagramSocketImpl

extends java.lang.Object

implements SocketOptions

Abstract datagram and multicast socket implementation base class.

Since:

JDK1.1

Field Summary

protected java.io.FileDescriptor	fd The file descriptor object
protected int	localPort

Fields inherited from interface java.net.SocketOptions

ANEP_DISCARD, IP_MULTICAST_IF, IPV6_AUTH_NETWORK_LEVEL, IPV6_AUTH_TRANS_LEVEL, IPV6_ESP_NETWORK_LEVEL, IPV6_ESP_TRANS_LEVEL, IPV6_FLOW_LABEL, IPV6_MULTICAST_IF, IPV6_TRAFFIC_CLASS, SO_BINDADDR, SO_LINGER, SO_RCVBUF, SO_REUSEADDR, SO_SNDBUF, SO_TIMEOUT, TCP_NODELAY

Constructor Summary

DatagramSocketImpl()

Method Summary

protected abstract void	bind(int lport, InetAddress laddr) Binds a datagram socket to a local port and address.
protected abstract void	close() Close the socket.
protected abstract void	create() Creates a datagram socket
protected java.io.FileDescriptor	getFileDescriptor() Get the datagram socket file descriptor
protected abstract int	getHOPS() Retrieve the Hops option.
protected int	getLocalPort() Get the local port.
protected abstract void	join(InetAddress inetaddr) Join the multicast group.
protected abstract void	leave(InetAddress inetaddr) Leave the multicast group.
protected abstract int	peek(InetAddress i) Peek at the packet to see who it is from.
protected abstract void	receive(DatagramPacket p) Receive the datagram packet.
protected abstract void	send(DatagramPacket p) Sends a datagram packet.
protected abstract void	setHOPS(int hops) Set the Hops option.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.net.SocketOptions

getOption, setOption

Field Detail

localPort

protected int localPort

fd

protected java.io.FileDescriptor fd

The file descriptor object

Constructor Detail

DatagramSocketImpl

public DatagramSocketImpl()

Method Detail

create

protected abstract void create()
                        throws java.net.SocketException

Creates a datagram socket

bind

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

Binds a datagram socket to a local port and address.

send

protected abstract void send(DatagramPacket p)
                      throws java.io.IOException

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

Parameters:

packet - to be sent.

peek

protected abstract int peek(InetAddress i)
                     throws java.io.IOException

Peek at the packet to see who it is from.

Parameters:

return - the address which the packet came from.

receive

protected abstract void receive(DatagramPacket p)
                         throws java.io.IOException

Receive the datagram packet.

Parameters:

Packet - Received.

setHOPS

protected abstract void setHOPS(int hops)
                         throws java.io.IOException

Set the Hops option.

Parameters:

hops - to be set.

getHOPS

protected abstract int getHOPS()
                        throws java.io.IOException

Retrieve the Hops option.

join

protected abstract void join(InetAddress inetaddr)
                      throws java.io.IOException

Join the multicast group.

Parameters:

multicast - address to join.

leave

protected abstract void leave(InetAddress inetaddr)
                       throws java.io.IOException

Leave the multicast group.

Parameters:

multicast - address to leave.

close

protected abstract void close()

Close the socket.

getLocalPort

protected int getLocalPort()

Get the local port.

getFileDescriptor

protected java.io.FileDescriptor getFileDescriptor()

Get the datagram socket file descriptor