java.net
Class SocketImpl

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

All Implemented Interfaces:

SocketOptions

Direct Known Subclasses:

PlainSocketImpl

public abstract class SocketImpl

extends Object

implements SocketOptions

Untamed:

Field Summary

protected InetAddress	address The IP address of the remote end of this socket.
protected FileDescriptor	fd The file descriptor object for this socket.
protected int	localport The local port number to which this socket is connected.
protected int	port The port number on the remote host to which this socket is connected.
(package private) ServerSocket	serverSocket
(package private) Socket	socket The actual Socket object.

Fields inherited from interface java.net.SocketOptions

IP_MULTICAST_IF, IP_MULTICAST_IF2, IP_MULTICAST_LOOP, IP_TOS, SO_BINDADDR, SO_BROADCAST, SO_KEEPALIVE, SO_LINGER, SO_OOBINLINE, SO_RCVBUF, SO_REUSEADDR, SO_SNDBUF, SO_TIMEOUT, TCP_NODELAY

Constructor Summary

SocketImpl()
Enabled:

Method Summary

protected abstract void	accept(SocketImpl s) Accepts a connection.
protected abstract int	available() Returns the number of bytes that can be read from this socket without blocking.
protected abstract void	bind(InetAddress host, int port) Binds this socket to the specified port number on the specified host.
protected abstract void	close() Closes this socket.
protected abstract void	connect(InetAddress address, int port) Connects this socket to the specified port number on the specified host.
protected abstract void	connect(SocketAddress address, int timeout) Connects this socket to the specified port number on the specified host.
protected abstract void	connect(String host, int port) Connects this socket to the specified port on the named host.
protected abstract void	create(boolean stream) Creates either a stream or a datagram socket.
protected FileDescriptor	getFileDescriptor() Returns the value of this socket's fd field.
protected InetAddress	getInetAddress() Returns the value of this socket's address field.
protected abstract InputStream	getInputStream() Returns an input stream for this socket.
protected int	getLocalPort() Returns the value of this socket's localport field.
protected abstract OutputStream	getOutputStream() Returns an output stream for this socket.
protected int	getPort() Returns the value of this socket's port field.
(package private) ServerSocket	getServerSocket()
(package private) Socket	getSocket()
protected abstract void	listen(int backlog) Sets the maximum queue length for incoming connection indications (a request to connect) to the count argument.
(package private) void	reset()
protected abstract void	sendUrgentData(int data) Send one byte of urgent data on the socket.
(package private) void	setServerSocket(ServerSocket soc)
(package private) void	setSocket(Socket soc)
protected void	shutdownInput() Places the input stream for this socket at "end of stream".
protected void	shutdownOutput() Disables the output stream for this socket.
protected boolean	supportsUrgentData() Returns whether or not this SocketImpl supports sending urgent data.
String	toString() Suppressed: 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

Methods inherited from interface java.net.SocketOptions

getOption, setOption

Field Detail

socket

Socket socket

The actual Socket object.

serverSocket

ServerSocket serverSocket

fd

protected FileDescriptor fd

The file descriptor object for this socket.

address

protected InetAddress address

The IP address of the remote end of this socket.

port

protected int port

The port number on the remote host to which this socket is connected.

localport

protected int localport

The local port number to which this socket is connected.

Constructor Detail

SocketImpl

public SocketImpl()

Enabled:

Method Detail

create

protected abstract void create(boolean stream)
                        throws IOException

Creates either a stream or a datagram socket.

Parameters:

stream - if true, create a stream socket; otherwise, create a datagram socket.

IOException

connect

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

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

Parameters:

host - the name of the remote host.

port - the port number.

IOException

connect

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

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

Parameters:

address - the IP address of the remote host.

port - the port number.

IOException

connect

protected abstract void connect(SocketAddress address,
                                int timeout)
                         throws IOException

Connects this socket to the specified port number on the specified host. A timeout of zero is interpreted as an infinite timeout. The connection will then block until established or an error occurs.

Parameters:

address - the Socket address of the remote host.

timeout - the timeout value, in milliseconds, or zero for no timeout.

IOException

Since:

1.4

bind

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

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

Parameters:

host - the IP address of the remote host.

port - the port number.

IOException

listen

protected abstract void listen(int backlog)
                        throws IOException

Sets the maximum queue length for incoming connection indications (a request to connect) to the count argument. If a connection indication arrives when the queue is full, the connection is refused.

Parameters:

backlog - the maximum length of the queue.

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

Returns an input stream for this socket.

Returns:

a stream for reading from this socket.

IOException

getOutputStream

protected abstract OutputStream getOutputStream()
                                         throws IOException

Returns an output stream for this socket.

Returns:

an output stream for writing to this socket.

IOException

available

protected abstract int available()
                          throws IOException

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

Returns:

the number of bytes that can be read from this socket without blocking.

IOException

close

protected abstract void close()
                       throws IOException

Closes this socket.

IOException

shutdownInput

protected void shutdownInput()
                      throws IOException

Places the input stream for this socket at "end of stream". Any data sent to this socket is acknowledged and then silently discarded. If you read from a socket input stream after invoking shutdownInput() on the socket, the stream will return EOF.

IOException

See Also:

java.net.Socket#shutdownOutput(), java.net.Socket#close(), java.net.Socket#setSoLinger(boolean, int)

shutdownOutput

protected void shutdownOutput()
                       throws IOException

Disables the output stream for this socket. For a TCP socket, any previously written data will be sent followed by TCP's normal connection termination sequence. If you write to a socket output stream after invoking shutdownOutput() on the socket, the stream will throw an IOException.

IOException

See Also:

java.net.Socket#shutdownInput(), java.net.Socket#close(), java.net.Socket#setSoLinger(boolean, int)

getFileDescriptor

protected FileDescriptor getFileDescriptor()

Returns the value of this socket's fd field.

Returns:

the value of this socket's fd field.

See Also:

java.net.SocketImpl#fd

getInetAddress

protected InetAddress getInetAddress()

Returns the value of this socket's address field.

Returns:

the value of this socket's address field.

See Also:

java.net.SocketImpl#address

getPort

protected int getPort()

Returns the value of this socket's port field.

Returns:

the value of this socket's port field.

See Also:

java.net.SocketImpl#port

supportsUrgentData

protected boolean supportsUrgentData()

Returns whether or not this SocketImpl supports sending urgent data. By default, false is returned unless the method is overridden in a sub-class

Returns:

true if urgent data supported

Since:

1.4

See Also:

java.net.SocketImpl#address

sendUrgentData

protected abstract void sendUrgentData(int data)
                                throws IOException

Send one byte of urgent data on the socket. The byte to be sent is the low eight bits of the parameter

Parameters:

data - The byte of data to send

IOException

Since:

1.4

getLocalPort

protected int getLocalPort()

Returns the value of this socket's localport field.

Returns:

the value of this socket's localport field.

See Also:

java.net.SocketImpl#localport

setSocket

void setSocket(Socket soc)

getSocket

Socket getSocket()

setServerSocket

void setServerSocket(ServerSocket soc)

getServerSocket

ServerSocket getServerSocket()

toString

public String toString()

Suppressed: Returns the address and port of this socket as a String.

Overrides:

toString in class Object

Returns:

a string representation of this socket.

reset

void reset()
     throws IOException

IOException