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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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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: */




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