From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/java/net/SocketImpl.java | 321 +++++++++++++++++++++++++++++ 1 file changed, 321 insertions(+) create mode 100644 libjava/classpath/java/net/SocketImpl.java (limited to 'libjava/classpath/java/net/SocketImpl.java') diff --git a/libjava/classpath/java/net/SocketImpl.java b/libjava/classpath/java/net/SocketImpl.java new file mode 100644 index 000000000..77f470be3 --- /dev/null +++ b/libjava/classpath/java/net/SocketImpl.java @@ -0,0 +1,321 @@ +/* SocketImpl.java -- Abstract socket implementation class + Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 + 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. */ + +package java.net; + +import java.io.FileDescriptor; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; + + +/* Written using on-line Java Platform 1.2 API Specification. + * Believed complete and correct. + */ + +/** + * This abstract class serves as the parent class for socket implementations. + * The implementation class serves an intermediary to native routines that + * perform system specific socket operations. + *

+ * A default implementation is provided by the system, but this can be + * changed via installing a SocketImplFactory (through a call + * to the static method Socket.setSocketImplFactory). A + * subclass of Socket can also pass in a SocketImpl + * to the Socket(SocketImpl) constructor to use an + * implementation different from the system default without installing + * a factory. + * + * @author Aaron M. Renn (arenn@urbanophile.com) + * @author Per Bothner (bothner@cygnus.com) + */ +public abstract class SocketImpl implements SocketOptions +{ + /** + * The address of the remote end of the socket connection + */ + protected InetAddress address; + + /** + * A FileDescriptor object representing this socket connection. + */ + protected FileDescriptor fd; + + /** + * The port number the socket is bound to locally + */ + protected int localport = -1; + + /** + * The port number of the remote end of the socket connection + */ + protected int port; + + /** + * Default, no-argument constructor for use by subclasses. + */ + public SocketImpl() + { + } + + /** + * 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 + * + * @exception IOException If an error occurs + */ + protected abstract void create(boolean stream) throws IOException; + + /** + * Connects to the remote hostname and port specified as arguments. + * + * @param host The remote hostname to connect to + * @param port The remote port to connect to + * + * @exception IOException If an error occurs + */ + protected abstract void connect(String host, int port) + throws IOException; + + /** + * Connects to the remote address and port specified as arguments. + * + * @param host The remote address to connect to + * @param port The remote port to connect to + * + * @exception IOException If an error occurs + */ + protected abstract void connect(InetAddress host, int port) + throws IOException; + + /** + * Connects to the socket to the host specified in address. This + * method blocks until successful connected or the timeout occurs. + * A timeout of zero means no timout. + * + * @param address Data of remote host + * @param timeout time to wait to stop connecting + * + * @exception IOException If an error occurs + * + * @since 1.4 + */ + protected abstract void connect(SocketAddress address, int timeout) + throws IOException; + + /** + * Binds to the specified port on the specified addr. Note that this addr + * must represent a local IP address. + *

+ * Note that it is unspecified how to bind to all interfaces on the localhost + * (INADDR_ANY). + * + * @param host The address to bind to + * @param port The port number to bind to + * + * @exception IOException If an error occurs + */ + protected abstract void bind(InetAddress host, int port) + throws IOException; + + /** + * Starts listening for connections on a socket. The backlog 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 backlog The length of the pending connection queue + * + * @exception IOException If an error occurs + */ + protected abstract void listen(int backlog) throws IOException; + + /** + * Accepts a connection on this socket. + * + * @param s The implementation object for the accepted connection. + * + * @exception IOException If an error occurs + */ + protected abstract void accept(SocketImpl s) throws IOException; + + /** + * Returns an InputStream object for reading from this socket. + * + * @return An InputStream for reading from this socket. + * + * @exception IOException If an error occurs + */ + protected abstract InputStream getInputStream() throws IOException; + + /** + * Returns an OutputStream object for writing to this socket + * + * @return An OutputStream for writing to this socket. + * + * @exception IOException If an error occurs. + */ + protected abstract OutputStream getOutputStream() throws IOException; + + /** + * Returns the number of bytes that the caller can read from this socket + * without blocking. + * + * @return The number of readable bytes before blocking + * + * @exception IOException If an error occurs + */ + protected abstract int available() throws IOException; + + /** + * Closes the socket. This will normally cause any resources, such as the + * InputStream, OutputStream and associated file descriptors to be freed. + *

+ * Note that if the SO_LINGER option is set on this socket, then the + * operation could block. + * + * @exception IOException If an error occurs + */ + protected abstract void close() throws IOException; + + /** + * Returns the FileDescriptor objects for this socket. + * + * @return A FileDescriptor for this socket. + */ + protected FileDescriptor getFileDescriptor() + { + return fd; + } + + /** + * Returns the remote address this socket is connected to + * + * @return The remote address + */ + protected InetAddress getInetAddress() + { + return address; + } + + /** + * Returns the remote port this socket is connected to + * + * @return The remote port + */ + protected int getPort() + { + return port; + } + + /** + * Returns true or false when this socket supports sending urgent data + * or not. + * + * @return true if the socket implementation supports sending urgent data, + * false otherwise + * + * @since 1.4 + */ + protected boolean supportsUrgentData() + { + // This method has to be overwritten by socket classes that support + // sending urgend data. + return false; + } + + /** + * Sends one byte of urgent data to the socket. + * + * @param data The byte to send, the low eight bits of it + * + * @exception IOException If an error occurs + * + * @since 1.4 + */ + protected abstract void sendUrgentData(int data) throws IOException; + + /** + * Returns the local port this socket is bound to + * + * @return The local port + */ + protected int getLocalPort() + { + return localport; + } + + /** + * Returns a String representing the remote host and port of + * this socket. + * + * @return A String for this socket. + */ + public String toString() + { + return "[addr=" + + ((address == null) ? "0.0.0.0/0.0.0.0" : address.toString()) + + ",port=" + port + ",localport=" + localport + "]"; + } + + /** + * Shut down the input side of this socket. Subsequent reads will + * return end-of-file. + * + * @exception IOException if an error occurs + */ + protected void shutdownInput() throws IOException + { + throw new IOException("Not implemented in this socket class"); + } + + /** + * Shut down the output side of this socket. Subsequent writes will + * fail with an IOException. + * + * @exception IOException if an error occurs + */ + protected void shutdownOutput() throws IOException + { + throw new IOException("Not implemented in this socket class"); + } +} -- cgit v1.2.3