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Public UNO Java Classes (formerly jurt,juh,ridl,unoil)
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package com.sun.star.lib.connections.socket;
import com.sun.star.comp.loader.FactoryHelper;
import com.sun.star.connection.AlreadyAcceptingException;
import com.sun.star.connection.ConnectionSetupException;
import com.sun.star.connection.XAcceptor;
import com.sun.star.connection.XConnection;
import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.lang.XSingleServiceFactory;
import com.sun.star.registry.XRegistryKey;
import java.io.IOException;
import java.net.*;
/**
* A component that implements the XAcceptor interface.
*
* The socketAcceptor is a specialized component that uses TCP
* sockets for communication. The socketAcceptor is generally used
* by the com.sun.star.connection.Acceptor service.
*
* @see com.sun.star.connection.XAcceptor
* @see com.sun.star.connection.XConnection2
* @see com.sun.star.connection.XConnector
* @see com.sun.star.comp.loader.JavaLoader
*
* @since UDK 1.0
*/
public final class socketAcceptor implements XAcceptor {
/**
* The name of the service.
*
* The JavaLoader accesses this through reflection.
*
* @see com.sun.star.comp.loader.JavaLoader
*/
public static final String __serviceName
= "com.sun.star.connection.socketAcceptor";
/**
* Returns a factory for creating the service.
*
* This method is called by the JavaLoader.
*
* @param implName the name of the implementation for which a service is
* requested.
* @param multiFactory the service manager to be used (if needed).
* @param regKey the registry key.
* @return an XSingleServiceFactory for creating the component.
*
* @see com.sun.star.comp.loader.JavaLoader
*/
public static XSingleServiceFactory __getServiceFactory(
String implName, XMultiServiceFactory multiFactory, XRegistryKey regKey)
{
return implName.equals(socketAcceptor.class.getName())
? FactoryHelper.getServiceFactory(socketAcceptor.class,
__serviceName, multiFactory,
regKey)
: null;
}
/**
* Accepts a connection request via the described socket.
*
* This call blocks until a connection has been established.
*
* The connection description has the following format:
* type*(key=value),
* where type should be socket
* (ignoring case). Supported keys (ignoring case) currently are
*
* host
* - The name or address of the accepting interface (defaults to
*
0, meaning any interface).
* port
* - The TCP port number to accept on (defaults to
6001).
* backlog
* - The maximum length of the acceptor's queue (defaults to
*
50).
* tcpnodelay
* - A flag (
0/1) enabling or disabling Nagle's
* algorithm on the resulting connection.
*
*
* @param connectionDescription the description of the connection.
* @return an XConnection to the client.
*
* @see com.sun.star.connection.XConnection
* @see com.sun.star.connection.XConnector
*/
public XConnection accept(String connectionDescription) throws
AlreadyAcceptingException, ConnectionSetupException,
com.sun.star.lang.IllegalArgumentException
{
ServerSocket serv;
synchronized (this) {
if (server == null) {
ConnectionDescriptor desc
= new ConnectionDescriptor(connectionDescription);
String host = desc.getHost();
if (host.equals("0")) {
host = null;
}
if (DEBUG) {
System.err.println("##### " + getClass().getName()
+ ".accept: creating ServerSocket "
+ desc.getPort() + ", "
+ desc.getBacklog() + ", " + host);
}
try {
server = new ServerSocket(desc.getPort(), desc.getBacklog(),
host == null ? null
: InetAddress.getByName(host));
} catch (IOException e) {
throw new ConnectionSetupException(e);
}
acceptingDescription = connectionDescription;
tcpNoDelay = desc.getTcpNoDelay();
} else if (!connectionDescription.equals(acceptingDescription)) {
throw new AlreadyAcceptingException(acceptingDescription
+ " vs. "
+ connectionDescription);
}
serv = server;
}
Socket socket = null;
try {
socket = serv.accept();
if (DEBUG) {
System.err.println("##### " + getClass().getName()
+ ".accept: accepted " + socket);
}
// we enable tcpNoDelay for loopback connections because
// it can make a significant speed difference on linux boxes.
if (tcpNoDelay != null) {
socket.setTcpNoDelay(tcpNoDelay.booleanValue());
}
else {
InetSocketAddress address = (InetSocketAddress)socket.getRemoteSocketAddress();
if (address != null && address.getAddress().isLoopbackAddress()) {
socket.setTcpNoDelay(true);
}
}
return new SocketConnection(acceptingDescription, socket);
}
catch(IOException e) {
if (socket != null) {
try {
socket.close();
} catch(IOException ioException) {
}
}
throw new ConnectionSetupException(e);
}
}
/**
*
* @see com.sun.star.connection.XAcceptor#stopAccepting
*/
public void stopAccepting() {
ServerSocket serv;
synchronized (this) {
serv = server;
}
try {
serv.close();
}
catch (IOException e) {
throw new com.sun.star.uno.RuntimeException(e);
}
}
private static final boolean DEBUG = false;
private ServerSocket server = null;
private String acceptingDescription;
private Boolean tcpNoDelay;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */