com.sun.star.lib.connections.socket.socketAcceptor Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of libreoffice Show documentation
Show all versions of libreoffice Show documentation
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: */