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


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