Commit f2741d5f by Michael Koch Committed by Michael Koch

DatagramSocket.java: Added classpath license info.

2003-01-07  Michael Koch  <konqueror@gmx.de>

 	* java/net/DatagramSocket.java:
 	Added classpath license info.
 	(DatagramSocket): Merged description with classpath.
 	(close): Merged description with classpath.
 	(getChannel): Merged description with classpath.
 	(getInetAddress): Merged description with classpath.
 	(getPort): Merged description with classpath.
 	(getLocalAddress): Merged description with classpath.
 	(getLocalPort): Merged description with classpath.
 	(getSoTimeout): Merged description with classpath.
 	(setSoTimeout): Merged description with classpath.
 	(getSendBufferSize): Merged description with classpath.
 	(setSendBufferSize): Merged description with classpath.
 	(getReceiveBufferSize): Merged description with classpath.
 	(setReceiveBufferSize): Merged description with classpath.

From-SVN: r60989
parent fe50034d
2003-01-07 Michael Koch <konqueror@gmx.de>
* java/net/DatagramSocket.java:
Added classpath license info.
(DatagramSocket): Merged description with classpath.
(close): Merged description with classpath.
(getChannel): Merged description with classpath.
(getInetAddress): Merged description with classpath.
(getPort): Merged description with classpath.
(getLocalAddress): Merged description with classpath.
(getLocalPort): Merged description with classpath.
(getSoTimeout): Merged description with classpath.
(setSoTimeout): Merged description with classpath.
(getSendBufferSize): Merged description with classpath.
(setSendBufferSize): Merged description with classpath.
(getReceiveBufferSize): Merged description with classpath.
(setReceiveBufferSize): Merged description with classpath.
2003-01-04 Tom Tromey <tromey@redhat.com> 2003-01-04 Tom Tromey <tromey@redhat.com>
* java/awt/List.java: Merged with Classpath. * java/awt/List.java: Merged with Classpath.
......
// DatagramSocket.java /* DatagramSocket.java -- A class to model UDP sockets
Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
/* Copyright (C) 1999, 2000, 2002 Free Software Foundation
This file is part of GNU Classpath.
This file is part of libgcj.
GNU Classpath is free software; you can redistribute it and/or modify
This software is copyrighted work licensed under the terms of the it under the terms of the GNU General Public License as published by
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for the Free Software Foundation; either version 2, or (at your option)
details. */ 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., 59 Temple Place, Suite 330, Boston, MA
02111-1307 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. */
package java.net; package java.net;
...@@ -15,16 +42,23 @@ import java.nio.channels.DatagramChannel; ...@@ -15,16 +42,23 @@ import java.nio.channels.DatagramChannel;
import java.nio.channels.IllegalBlockingModeException; import java.nio.channels.IllegalBlockingModeException;
/** /**
* @author Warren Levy <warrenl@cygnus.com>
* @date May 3, 1999.
*/
/**
* Written using on-line Java Platform 1.2 API Specification, as well * Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998). * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct. * Status: Believed complete and correct.
*/ */
/**
* This class models a connectionless datagram socket that sends
* individual packets of data across the network. In the TCP/IP world,
* this means UDP. Datagram packets do not have guaranteed delivery,
* or any guarantee about the order the data will be received on the
* remote host.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Warren Levy (warrenl@cygnus.com)
* @date May 3, 1999.
*/
public class DatagramSocket public class DatagramSocket
{ {
/** /**
...@@ -33,24 +67,22 @@ public class DatagramSocket ...@@ -33,24 +67,22 @@ public class DatagramSocket
*/ */
static DatagramSocketImplFactory factory; static DatagramSocketImplFactory factory;
/**
* This is the implementation object used by this socket.
*/
DatagramSocketImpl impl; DatagramSocketImpl impl;
DatagramChannel ch; DatagramChannel ch;
/**
* This is the address we are "connected" to
*/
private InetAddress remoteAddress; private InetAddress remoteAddress;
private int remotePort;
/** /**
* Creates a DatagramSocket * This is the port we are "connected" to
*
* @exception SocketException If an error occurs
* @exception SecurityException If a security manager exists and
* its checkListen method doesn't allow the operation
*/ */
public DatagramSocket() throws SocketException private int remotePort;
{
this(0, null);
}
/** /**
* Creates a DatagramSocket from a specified DatagramSocketImpl instance * Creates a DatagramSocket from a specified DatagramSocketImpl instance
...@@ -67,31 +99,27 @@ public class DatagramSocket ...@@ -67,31 +99,27 @@ public class DatagramSocket
} }
/** /**
* Creates a datagram socket that is bound to a given socket address * Initializes a new instance of <code>DatagramSocket</code> that binds to
* * a random port and every address on the local machine.
* @param bindaddr The socket address to bind to
* *
* @exception SocketException If an error occurs * @exception SocketException If an error occurs.
* @exception SecurityException If a security manager exists and * @exception SecurityException If a security manager exists and
* its checkListen method doesn't allow the operation * its checkListen method doesn't allow the operation.
*
* @since 1.4
*/ */
public DatagramSocket (SocketAddress bindaddr) public DatagramSocket() throws SocketException
throws SocketException
{ {
this (((InetSocketAddress) bindaddr).getPort (), this(0, null);
((InetSocketAddress) bindaddr).getAddress ());
} }
/** /**
* Creates a datagram socket that is bound to a specific port * Initializes a new instance of <code>DatagramSocket</code> that binds to
* the specified port and every address on the local machine.
* *
* @param port The port number to bind to * @param port The local port number to bind to.
* *
* @exception SocketException If an error occurs * @exception SecurityException If a security manager exists and its
* @exception SecurityException If a security manager exists and * checkListen method doesn't allow the operation.
* its checkListen method doesn't allow the operation * @exception SocketException If an error occurs.
*/ */
public DatagramSocket(int port) throws SocketException public DatagramSocket(int port) throws SocketException
{ {
...@@ -99,14 +127,15 @@ public class DatagramSocket ...@@ -99,14 +127,15 @@ public class DatagramSocket
} }
/** /**
* Creates a datagram socket that is bound to a specific port/inet address * Initializes a new instance of <code>DatagramSocket</code> that binds to
* the specified local port and address.
* *
* @param port The port number to bind to * @param port The local port number to bind to.
* @param laddr The local address to bind to * @param laddr The local address to bind to.
* *
* @exception SocketException If an error occurs * @exception SecurityException If a security manager exists and its
* @exception SecurityException If a security manager exists and * checkListen method doesn't allow the operation.
* its checkListen method doesn't allow the operation * @exception SocketException If an error occurs.
*/ */
public DatagramSocket(int port, InetAddress laddr) throws SocketException public DatagramSocket(int port, InetAddress laddr) throws SocketException
{ {
...@@ -123,8 +152,8 @@ public class DatagramSocket ...@@ -123,8 +152,8 @@ public class DatagramSocket
else else
try try
{ {
impl = (DatagramSocketImpl) Class.forName("java.net." + propVal + impl = (DatagramSocketImpl) Class.forName
"DatagramSocketImpl").newInstance(); ("java.net." + propVal + "DatagramSocketImpl").newInstance();
} }
catch (Exception e) catch (Exception e)
{ {
...@@ -145,34 +174,26 @@ public class DatagramSocket ...@@ -145,34 +174,26 @@ public class DatagramSocket
} }
/** /**
* Binds the socket to the given socket addres * Initializes a new instance of <code>DatagramSocket</code> that binds to
* the specified local port and address.
* *
* @param address The socket address to bind to * @param port The local port number to bind to.
* @param laddr The local address to bind to.
* *
* @exception SocketException If an error occurs * @exception SecurityException If a security manager exists and its
* @exception SecurityException If a security manager exists and * checkListen method doesn't allow the operation.
* its checkListen method doesn't allow the operation * @exception SocketException If an error occurs.
* @exception IllegalArgumentException If address type is not supported
* *
* @since 1.4 * @since 1.4
*/ */
public void bind (SocketAddress address) public DatagramSocket (SocketAddress address) throws SocketException
throws SocketException
{ {
if (! (address instanceof InetSocketAddress)) this (((InetSocketAddress) address).getPort (),
throw new IllegalArgumentException (); ((InetSocketAddress) address).getAddress ());
InetSocketAddress tmp = (InetSocketAddress) address;
SecurityManager s = System.getSecurityManager ();
if (s != null)
s.checkListen(tmp.getPort ());
impl.bind (tmp.getPort (), tmp.getAddress ());
} }
/** /**
* Closes the datagram socket * Closes this datagram socket.
*/ */
public void close() public void close()
{ {
...@@ -182,27 +203,41 @@ public class DatagramSocket ...@@ -182,27 +203,41 @@ public class DatagramSocket
} }
/** /**
* Checks if the datagram socket is closed * This method returns the remote address to which this socket is
* connected. If this socket is not connected, then this method will
* return <code>null</code>.
* *
* @since 1.4 * @return The remote address.
*
* @since 1.2
*/ */
public boolean isClosed() public InetAddress getInetAddress()
{ {
return !impl.getFileDescriptor().valid(); if (!isConnected ())
return null;
return remoteAddress;
} }
/** /**
* Gets a datagram channel assoziated with the socket * This method returns the remote port to which this socket is
* connected. If this socket is not connected, then this method will
* return -1.
* *
* @since 1.4 * @return The remote port.
*
* @since 1.2
*/ */
public DatagramChannel getChannel() public int getPort()
{ {
return ch; if (!isConnected ())
return -1;
return remotePort;
} }
/** /**
* Returns the local address of the datagram socket * Returns the local address this datagram socket is bound to.
* *
* @since 1.1 * @since 1.1
*/ */
...@@ -244,9 +279,9 @@ public class DatagramSocket ...@@ -244,9 +279,9 @@ public class DatagramSocket
} }
/** /**
* Returns the local port this socket uses * Returns the local port this socket is bound to.
* *
* @return The local port number * @return The local port number.
*/ */
public int getLocalPort() public int getLocalPort()
{ {
...@@ -257,11 +292,12 @@ public class DatagramSocket ...@@ -257,11 +292,12 @@ public class DatagramSocket
} }
/** /**
* Gets the SO_TIMEOUT value * Returns the value of the socket's SO_TIMEOUT setting. If this method
* returns 0 then SO_TIMEOUT is disabled.
* *
* @return The current timeout in milliseconds * @return The current timeout in milliseconds.
* *
* @exception SocketException If an error occurs * @exception SocketException If an error occurs.
* *
* @since 1.1 * @since 1.1
*/ */
...@@ -271,6 +307,7 @@ public class DatagramSocket ...@@ -271,6 +307,7 @@ public class DatagramSocket
throw new SocketException ("Cannot initialize Socket implementation"); throw new SocketException ("Cannot initialize Socket implementation");
Object timeout = impl.getOption(SocketOptions.SO_TIMEOUT); Object timeout = impl.getOption(SocketOptions.SO_TIMEOUT);
if (timeout instanceof Integer) if (timeout instanceof Integer)
return ((Integer)timeout).intValue(); return ((Integer)timeout).intValue();
else else
...@@ -278,20 +315,173 @@ public class DatagramSocket ...@@ -278,20 +315,173 @@ public class DatagramSocket
} }
/** /**
* Receive a datagram packet * Sets the value of the socket's SO_TIMEOUT value. A value of 0 will
* disable SO_TIMEOUT. Any other value is the number of milliseconds
* a socket read/write will block before timing out.
* *
* @param p The datagram packet to put the incoming data into * @param timeout The new SO_TIMEOUT value in milliseconds.
* *
* @exception IOException If an error occurs * @exception SocketException If an error occurs.
*
* @since 1.1
*/
public synchronized void setSoTimeout(int timeout) throws SocketException
{
if (timeout < 0)
throw new IllegalArgumentException("Invalid timeout: " + timeout);
impl.setOption(SocketOptions.SO_TIMEOUT, new Integer(timeout));
}
/**
* This method returns the value of the system level socket option
* SO_SNDBUF, which is used by the operating system to tune buffer
* sizes for data transfers.
*
* @return The send buffer size.
*
* @exception SocketException If an error occurs.
*
* @since 1.2
*/
public int getSendBufferSize() throws SocketException
{
if (impl == null)
throw new SocketException ("Cannot initialize Socket implementation");
Object obj = impl.getOption(SocketOptions.SO_SNDBUF);
if (obj instanceof Integer)
return(((Integer)obj).intValue());
else
throw new SocketException("Unexpected type");
}
/**
* This method sets the value for the system level socket option
* SO_SNDBUF to the specified value. Note that valid values for this
* option are specific to a given operating system.
*
* @param size The new send buffer size.
*
* @exception SocketException If an error occurs.
* @exception IllegalArgumentException If size is 0 or negative.
*
* @since 1.2
*/
public void setSendBufferSize(int size) throws SocketException
{
if (size < 0)
throw new IllegalArgumentException("Buffer size is less than 0");
impl.setOption(SocketOptions.SO_SNDBUF, new Integer(size));
}
/**
* This method returns the value of the system level socket option
* SO_RCVBUF, which is used by the operating system to tune buffer
* sizes for data transfers.
*
* @return The receive buffer size.
*
* @exception SocketException If an error occurs.
*
* @since 1.2
*/
public int getReceiveBufferSize() throws SocketException
{
if (impl == null)
throw new SocketException ("Cannot initialize Socket implementation");
Object obj = impl.getOption(SocketOptions.SO_RCVBUF);
if (obj instanceof Integer)
return(((Integer)obj).intValue());
else
throw new SocketException("Unexpected type");
}
/**
* This method sets the value for the system level socket option
* SO_RCVBUF to the specified value. Note that valid values for this
* option are specific to a given operating system.
*
* @param size The new receive buffer size.
*
* @exception SocketException If an error occurs.
* @exception IllegalArgumentException If size is 0 or negative.
*
* @since 1.2
*/
public void setReceiveBufferSize(int size) throws SocketException
{
if (impl == null)
throw new SocketException ("Cannot initialize Socket implementation");
if (size < 0)
throw new IllegalArgumentException("Buffer size is less than 0");
impl.setOption(SocketOptions.SO_RCVBUF, new Integer(size));
}
/**
* Connects the datagram socket to a specified address/port.
*
* @param address The address to connect to.
* @param port The port to connect to.
*
* @exception SocketException If an error occurs.
* @exception IllegalArgumentException If address is null
* or the port number is illegal.
* @exception SecurityException If the caller is not allowed to send
* datagrams to and receive datagrams from the address and port.
*
* @since 1.2
*/
public void connect(InetAddress address, int port)
throws SocketException
{
if (address == null)
throw new IllegalArgumentException ("Address may not be null");
if ((port < 1) || (port > 65535))
throw new IllegalArgumentException ("Port number is illegal");
SecurityManager sm = System.getSecurityManager();
if (sm != null)
sm.checkAccept(address.getHostName (), port);
impl.connect (address, port);
remoteAddress = address;
remotePort = port;
}
/**
* Disconnects the datagram socket.
*
* @since 1.2
*/
public void disconnect()
{
impl.disconnect();
}
/**
* Receive a datagram packet.
*
* @param p The datagram packet to put the incoming data into.
*
* @exception IOException If an error occurs.
* @exception SocketTimeoutException If setSoTimeout was previously called * @exception SocketTimeoutException If setSoTimeout was previously called
* and the timeout has expired * and the timeout has expired.
* @exception PortUnreachableException If the socket is connected to a * @exception PortUnreachableException If the socket is connected to a
* currently unreachable destination. Note, there is no guarantee that the * currently unreachable destination. Note, there is no guarantee that the
* exception will be thrown * exception will be thrown.
* @exception IllegalBlockingModeException If this socket has an associated * @exception IllegalBlockingModeException If this socket has an associated
* channel, and the channel is in non-blocking mode * channel, and the channel is in non-blocking mode.
* @exception SecurityException If a security manager exists and its * @exception SecurityException If a security manager exists and its
* checkAccept ethod doesn't allow the receive * checkAccept ethod doesn't allow the receive.
*/ */
public synchronized void receive(DatagramPacket p) throws IOException public synchronized void receive(DatagramPacket p) throws IOException
{ {
...@@ -313,18 +503,18 @@ public class DatagramSocket ...@@ -313,18 +503,18 @@ public class DatagramSocket
} }
/** /**
* Sends a datagram packet * Sends a datagram packet.
* *
* @param p The datagram packet to send * @param p The datagram packet to send.
* *
* @exception IOException If an error occurs * @exception IOException If an error occurs.
* @exception SecurityException If a security manager exists and its * @exception SecurityException If a security manager exists and its
* checkMulticast or checkConnect method doesn't allow the send * checkMulticast or checkConnect method doesn't allow the send.
* @exception PortUnreachableException If the socket is connected to a * @exception PortUnreachableException If the socket is connected to a
* currently unreachable destination. Note, there is no guarantee that the * currently unreachable destination. Note, there is no guarantee that the
* exception will be thrown * exception will be thrown.
* @exception IllegalBlockingModeException If this socket has an associated * @exception IllegalBlockingModeException If this socket has an associated
* channel, and the channel is in non-blocking mode * channel, and the channel is in non-blocking mode.
*/ */
public void send(DatagramPacket p) throws IOException public void send(DatagramPacket p) throws IOException
{ {
...@@ -357,62 +547,59 @@ public class DatagramSocket ...@@ -357,62 +547,59 @@ public class DatagramSocket
} }
/** /**
* Sets a new value for SO_TIMEOUT * Binds the socket to the given socket address.
* *
* @param timeout The timeout in milliseconds * @param address The socket address to bind to.
* *
* @exception SocketException If an error occurs * @exception SocketException If an error occurs.
* @exception SecurityException If a security manager exists and
* its checkListen method doesn't allow the operation.
* @exception IllegalArgumentException If address type is not supported.
* *
* @since 1.1 * @since 1.4
*/ */
public synchronized void setSoTimeout(int timeout) throws SocketException public void bind (SocketAddress address)
throws SocketException
{ {
if (timeout < 0) if (! (address instanceof InetSocketAddress))
throw new IllegalArgumentException("Invalid timeout: " + timeout); throw new IllegalArgumentException ();
impl.setOption(SocketOptions.SO_TIMEOUT, new Integer(timeout)); InetSocketAddress tmp = (InetSocketAddress) address;
SecurityManager s = System.getSecurityManager ();
if (s != null)
s.checkListen(tmp.getPort ());
impl.bind (tmp.getPort (), tmp.getAddress ());
} }
/** /**
* Connects the datagrem socket to a specified address/port * Checks if the datagram socket is closed.
*
* @param address The address to connect to
* @param port The port to connect to
*
* @exception SocketException If an error occurs
* @exception IllegalArgumentException If address is null
* or the port number is illegal
* @exception SecurityException If the caller is not allowed to send
* datagrams to and receive datagrams from the address and port
* *
* @since 1.2 * @since 1.4
*/ */
public void connect(InetAddress address, int port) public boolean isClosed()
throws SocketException
{ {
if (address == null) return !impl.getFileDescriptor().valid();
throw new IllegalArgumentException ("Address may not be null"); }
if (port < 1 || port > 65535)
throw new IllegalArgumentException ("Port number is illegal");
SecurityManager s = System.getSecurityManager();
if (s != null)
s.checkAccept(address.getHostName (), port);
impl.connect (address, port);
remoteAddress = address; /**
remotePort = port; * Returns the datagram channel assoziated with this datagram socket.
*
* @since 1.4
*/
public DatagramChannel getChannel()
{
return ch;
} }
/** /**
* Connects the datagram socket to a specified socket address. * Connects the datagram socket to a specified socket address.
* *
* @param address The socket address to connect to * @param address The socket address to connect to.
* *
* @exception SocketException If an error occurs * @exception SocketException If an error occurs.
* @exception IllegalArgumentException If address type is not supported * @exception IllegalArgumentException If address type is not supported.
* *
* @since 1.4 * @since 1.4
*/ */
...@@ -427,17 +614,7 @@ public class DatagramSocket ...@@ -427,17 +614,7 @@ public class DatagramSocket
} }
/** /**
* Disconnects the datagram socket * Returns the binding state of the socket.
*
* @since 1.2
*/
public void disconnect()
{
impl.disconnect();
}
/**
* Returns the binding state of the socket
* *
* @since 1.4 * @since 1.4
*/ */
...@@ -456,7 +633,7 @@ public class DatagramSocket ...@@ -456,7 +633,7 @@ public class DatagramSocket
} }
/** /**
* Returns the connection state of the socket * Returns the connection state of the socket.
* *
* @since 1.4 * @since 1.4
*/ */
...@@ -466,35 +643,8 @@ public class DatagramSocket ...@@ -466,35 +643,8 @@ public class DatagramSocket
} }
/** /**
* Returns the InetAddress the socket is connected to
* or null if the socket is not connected
*
* @since 1.2
*/
public InetAddress getInetAddress()
{
if (!isConnected ())
return null;
return remoteAddress;
}
/**
* Returns the port number the socket is connected to or -1 if not connected
*
* @since 1.2
*/
public int getPort()
{
if (!isConnected ())
return -1;
return remotePort;
}
/**
* Returns the SocketAddress of the host this socket is conneted to * Returns the SocketAddress of the host this socket is conneted to
* or null if this socket is not connected * or null if this socket is not connected.
* *
* @since 1.4 * @since 1.4
*/ */
...@@ -508,7 +658,7 @@ public class DatagramSocket ...@@ -508,7 +658,7 @@ public class DatagramSocket
/** /**
* Returns the local SocketAddress this socket is bound to * Returns the local SocketAddress this socket is bound to
* or null if it is not bound * or null if it is not bound.
* *
* @since 1.4 * @since 1.4
*/ */
...@@ -529,36 +679,12 @@ public class DatagramSocket ...@@ -529,36 +679,12 @@ public class DatagramSocket
} }
/** /**
* This method returns the value of the system level socket option * Enables/Disables SO_REUSEADDR.
* SO_RCVBUF, which is used by the operating system to tune buffer
* sizes for data transfers.
* *
* @return The receive buffer size. * @param on Whether or not to have SO_REUSEADDR turned on.
* *
* @exception SocketException If an error occurs. * @exception SocketException If an error occurs.
* *
* @since 1.2
*/
public int getReceiveBufferSize() throws SocketException
{
if (impl == null)
throw new SocketException ("Cannot initialize Socket implementation");
Object obj = impl.getOption(SocketOptions.SO_RCVBUF);
if (obj instanceof Integer)
return(((Integer)obj).intValue());
else
throw new SocketException("Unexpected type");
}
/**
* Enables/Disables SO_REUSEADDR
*
* @param on Whether or not to have SO_REUSEADDR turned on
*
* @exception SocketException If an error occurs
*
* @since 1.4 * @since 1.4
*/ */
public void setReuseAddress(boolean on) throws SocketException public void setReuseAddress(boolean on) throws SocketException
...@@ -570,9 +696,9 @@ public class DatagramSocket ...@@ -570,9 +696,9 @@ public class DatagramSocket
} }
/** /**
* Checks if SO_REUSEADDR is enabled * Checks if SO_REUSEADDR is enabled.
* *
* @exception SocketException If an error occurs * @exception SocketException If an error occurs.
* *
* @since 1.4 * @since 1.4
*/ */
...@@ -673,73 +799,6 @@ public class DatagramSocket ...@@ -673,73 +799,6 @@ public class DatagramSocket
} }
/** /**
* This method returns the value of the system level socket option
* SO_SNDBUF, which is used by the operating system to tune buffer
* sizes for data transfers.
*
* @return The send buffer size.
*
* @exception SocketException If an error occurs.
*
* @since 1.2
*/
public int getSendBufferSize() throws SocketException
{
if (impl == null)
throw new SocketException ("Cannot initialize Socket implementation");
Object obj = impl.getOption(SocketOptions.SO_SNDBUF);
if (obj instanceof Integer)
return(((Integer)obj).intValue());
else
throw new SocketException("Unexpected type");
}
/**
* This method sets the value for the system level socket option
* SO_RCVBUF to the specified value. Note that valid values for this
* option are specific to a given operating system.
*
* @param size The new receive buffer size.
*
* @exception SocketException If an error occurs.
* @exception IllegalArgumentException If size is 0 or negative
*
* @since 1.2
*/
public void setReceiveBufferSize(int size) throws SocketException
{
if (impl == null)
throw new SocketException ("Cannot initialize Socket implementation");
if (size < 0)
throw new IllegalArgumentException("Buffer size is less than 0");
impl.setOption(SocketOptions.SO_RCVBUF, new Integer(size));
}
/**
* This method sets the value for the system level socket option
* SO_SNDBUF to the specified value. Note that valid values for this
* option are specific to a given operating system.
*
* @param size The new send buffer size.
*
* @exception SocketException If an error occurs.
* @exception IllegalArgumentException If size is 0 or negative
*
* @since 1.2
*/
public void setSendBufferSize(int size) throws SocketException
{
if (size < 0)
throw new IllegalArgumentException("Buffer size is less than 0");
impl.setOption(SocketOptions.SO_SNDBUF, new Integer(size));
}
/**
* Sets the datagram socket implementation factory for the application * Sets the datagram socket implementation factory for the application
* *
* @param fac The factory to set * @param fac The factory to set
......
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