284 lines
8.2 KiB
Java
284 lines
8.2 KiB
Java
/* PlainSocketImpl.java -- Default socket implementation
|
|
Copyright (c) 1998 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Classpath.
|
|
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU Classpath is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301 USA.
|
|
|
|
Linking this library statically or dynamically with other modules is
|
|
making a combined work based on this library. Thus, the terms and
|
|
conditions of the GNU General Public License cover the whole
|
|
combination.
|
|
|
|
As a special exception, the copyright holders of this library give you
|
|
permission to link this library with independent modules to produce an
|
|
executable, regardless of the license terms of these independent
|
|
modules, and to copy and distribute the resulting executable under
|
|
terms of your choice, provided that you also meet, for each linked
|
|
independent module, the terms and conditions of the license of that
|
|
module. An independent module is a module which is not derived from
|
|
or based on this library. If you modify this library, you may extend
|
|
this exception to your version of the library, but you are not
|
|
obligated to do so. If you do not wish to do so, delete this
|
|
exception statement from your version. */
|
|
|
|
import java.net.*;
|
|
import java.io.InputStream;
|
|
import java.io.OutputStream;
|
|
import java.io.IOException;
|
|
|
|
/**
|
|
* Unless the application installs its own SocketImplFactory, this is the
|
|
* default socket implemetation that will be used. It simply uses a
|
|
* combination of Java and native routines to implement standard BSD
|
|
* style sockets of family AF_INET and types SOCK_STREAM and SOCK_DGRAM
|
|
*
|
|
* @version 0.1
|
|
*
|
|
* @author Aaron M. Renn (arenn@urbanophile.com)
|
|
*/
|
|
class PlainSocketImpl extends SocketImpl
|
|
{
|
|
|
|
/*************************************************************************/
|
|
|
|
/*
|
|
* Static Variables
|
|
*/
|
|
|
|
/*
|
|
// Static initializer to load native library
|
|
static
|
|
{
|
|
System.loadLibrary("javanet");
|
|
}
|
|
*/
|
|
|
|
/*************************************************************************/
|
|
|
|
/*
|
|
* Instance Variables
|
|
*/
|
|
|
|
/**
|
|
* This is the native file descriptor for this socket
|
|
*/
|
|
protected int native_fd = -1;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Default do nothing constructor
|
|
*/
|
|
public
|
|
PlainSocketImpl()
|
|
{
|
|
;
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Accepts a new connection on this socket and returns in in the
|
|
* passed in SocketImpl.
|
|
*
|
|
* @param impl The SocketImpl object to accept this connection.
|
|
*/
|
|
protected native void
|
|
accept(SocketImpl impl) throws IOException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Returns the number of bytes that the caller can read from this socket
|
|
* without blocking. //*****Figure out if we can do something here
|
|
*
|
|
* @return The number of readable bytes before blocking
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected int
|
|
available() throws IOException
|
|
{
|
|
return(0);
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Binds to the specified port on the specified addr. Note that this addr
|
|
* must represent a local IP address. **** How bind to INADDR_ANY? ****
|
|
*
|
|
* @param addr The address to bind to
|
|
* @param port The port number to bind to
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected native void
|
|
bind(InetAddress addr, int port) throws IOException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Closes the socket. This will cause any InputStream or OutputStream
|
|
* objects for this Socket to be closed as well.
|
|
* <p>
|
|
* Note that if the SO_LINGER option is set on this socket, then the
|
|
* operation could block.
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected native void
|
|
close() throws IOException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Connects to the remote address and port specified as arguments.
|
|
*
|
|
* @param addr The remote address to connect to
|
|
* @param port The remote port to connect to
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected void
|
|
connect(InetAddress addr, int port) throws IOException
|
|
{
|
|
return;
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Connects to the remote hostname and port specified as arguments.
|
|
*
|
|
* @param hostname The remote hostname to connect to
|
|
* @param port The remote port to connect to
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected void
|
|
connect(String hostname, int port) throws IOException
|
|
{
|
|
InetAddress addr = InetAddress.getByName(hostname);
|
|
connect(addr, port);
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Creates a new socket that is not bound to any local address/port and
|
|
* is not connected to any remote address/port. This will be created as
|
|
* a stream socket if the stream parameter is true, or a datagram socket
|
|
* if the stream parameter is false.
|
|
*
|
|
* @param stream true for a stream socket, false for a datagram socket
|
|
*/
|
|
protected native void
|
|
create(boolean stream) throws IOException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Starts listening for connections on a socket. The queuelen parameter
|
|
* is how many pending connections will queue up waiting to be serviced
|
|
* before being accept'ed. If the queue of pending requests exceeds this
|
|
* number, additional connections will be refused.
|
|
*
|
|
* @param queuelen The length of the pending connection queue
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected native void
|
|
listen(int queuelen) throws IOException;
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Sets the specified option on a socket to the passed in object. For
|
|
* options that take an integer argument, the passed in object is an
|
|
* Integer. The option_id parameter is one of the defined constants in
|
|
* this interface.
|
|
*
|
|
* @param option_id The identifier of the option
|
|
* @param val The value to set the option to
|
|
*
|
|
* @exception SocketException If an error occurs
|
|
*/
|
|
public void
|
|
setOption(int option_id, Object val) throws SocketException
|
|
{
|
|
//*** Do non-native for now
|
|
System.err.println("Option Id=" + option_id);
|
|
System.err.println("Object is: " + val.getClass().getName());
|
|
System.err.println("Object value is: " + val);
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Returns the current setting of the specified option. The Object returned
|
|
* will be an Integer for options that have integer values. The option_id
|
|
* is one of the defined constants in this interface.
|
|
*
|
|
* @param option_id The option identifier
|
|
*
|
|
* @return The current value of the option
|
|
*
|
|
* @exception SocketException If an error occurs
|
|
*/
|
|
public Object
|
|
getOption(int option_id) throws SocketException
|
|
{
|
|
//**** Do non-native for now
|
|
System.err.println("Option Id=" + option_id);
|
|
return(null);
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Returns an InputStream object for reading from this socket. This will
|
|
* be an instance of SocketInputStream.
|
|
*
|
|
* @return An InputStream
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected InputStream
|
|
getInputStream() throws IOException
|
|
{
|
|
return(null);
|
|
}
|
|
|
|
/*************************************************************************/
|
|
|
|
/**
|
|
* Returns an OutputStream object for writing to this socket. This will
|
|
* be an instance of SocketOutputStream.
|
|
*
|
|
* @return An OutputStream
|
|
*
|
|
* @exception IOException If an error occurs
|
|
*/
|
|
protected OutputStream
|
|
getOutputStream() throws IOException
|
|
{
|
|
return(null);
|
|
}
|
|
|
|
} // class PlainSocketImpl
|
|
|