java.net
Class SocketImpl

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

public abstract class SocketImpl

extends Object

This is the Socket implementation class. It is an abstract class that must be subclassed to provide an actual implementation.

Field Summary

protected InetAddress	address The internet address where the socket will make a connection.
protected FileDescriptor	fd The file descriptor object
protected int	localport
protected int	port The port where the socket will make a connection.

Constructor Summary

SocketImpl()

Method Summary

protected abstract void	accept(SocketImpl s) Accepts a connection.
protected abstract int	available() Returns the number of bytes that can be read without blocking.
protected abstract void	bind(InetAddress host, int port) Binds the socket to the specified port on the specified host.
protected abstract void	close() Closes the socket.
protected abstract void	connect(InetAddress address, int port) Connects the socket to the specified address on the specified port.
protected abstract void	connect(String host, int port) Connects the socket to the specified port on the specified host.
protected abstract void	create(boolean stream) Creates a socket with a boolean that specifies whether this is a stream socket or a datagram socket.
protected FileDescriptor	getFileDescriptor()
protected InetAddress	getInetAddress()
protected abstract InputStream	getInputStream() Gets an InputStream for this socket.
protected int	getLocalPort()
protected abstract OutputStream	getOutputStream() Gets an OutputStream for this socket.
protected int	getPort()
protected abstract void	listen(int backlog) Specify to the system how many connection requests the system will queue up while waiting for the SocketImpl to execute accept().
String	toString() Returns the address and port of this Socket as a String.

Methods inherited from class java.lang.Object

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

Field Detail

fd

protected FileDescriptor fd

The file descriptor object

address

protected InetAddress address

The internet address where the socket will make a connection.

port

protected int port

The port where the socket will make a connection.

localport

protected int localport

Constructor Detail

SocketImpl

public SocketImpl()

Method Detail

create

protected abstract void create(boolean stream)
                        throws IOException

Creates a socket with a boolean that specifies whether this is a stream socket or a datagram socket.

Parameters:

stream - a boolean indicating whether this is a stream or datagram socket

IOException

connect

protected abstract void connect(String host,
                                int port)
                         throws IOException

Connects the socket to the specified port on the specified host.

Parameters:

host - the specified host of the connection

port - the port where the connection is made

IOException

connect

protected abstract void connect(InetAddress address,
                                int port)
                         throws IOException

Connects the socket to the specified address on the specified port.

Parameters:

address - the specified address of the connection

port - the specified port where connection is made

IOException

bind

protected abstract void bind(InetAddress host,
                             int port)
                      throws IOException

Binds the socket to the specified port on the specified host.

Parameters:

host - the host

port - the port

IOException

listen

protected abstract void listen(int backlog)
                        throws IOException

Specify to the system how many connection requests the system will queue up while waiting for the SocketImpl to execute accept().

Parameters:

backlog - the number of queued connect requests pending accept

IOException

accept

protected abstract void accept(SocketImpl s)
                        throws IOException

Accepts a connection.

Parameters:

s - the accepted connection

IOException

getInputStream

protected abstract InputStream getInputStream()
                                       throws IOException

Gets an InputStream for this socket.

IOException

getOutputStream

protected abstract OutputStream getOutputStream()
                                         throws IOException

Gets an OutputStream for this socket.

IOException

available

protected abstract int available()
                          throws IOException

Returns the number of bytes that can be read without blocking.

IOException

close

protected abstract void close()
                       throws IOException

Closes the socket.

IOException

getFileDescriptor

protected FileDescriptor getFileDescriptor()

getInetAddress

protected InetAddress getInetAddress()

getPort

protected int getPort()

getLocalPort

protected int getLocalPort()

toString

public String toString()

Returns the address and port of this Socket as a String.

Overrides:

toString in class Object