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package com.sun.star.lib.connections.socket;
import com.sun.star.comp.loader.FactoryHelper;
import com.sun.star.connection.ConnectionSetupException;
import com.sun.star.connection.NoConnectException;
import com.sun.star.connection.XConnection;
import com.sun.star.connection.XConnector;
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.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
/**
* A component that implements the <code>XConnector</code> interface.
*
* <p>The <code>socketConnector</code> is a specialized component that uses TCP
* sockets for communication. The <code>socketConnector</code> is generally
* used by the <code>com.sun.star.connection.Connector</code> service.</p>
*
* @see com.sun.star.connections.XAcceptor
* @see com.sun.star.connections.XConnection
* @see com.sun.star.connections.XConnector
* @see com.sun.star.loader.JavaLoader
*
* @since UDK 1.0
*/
public final class socketConnector implements XConnector {
/**
* The name of the service.
*
* <p>The <code>JavaLoader</code> acceses this through reflection.</p>
*
* @see com.sun.star.comp.loader.JavaLoader
*/
public static final String __serviceName
= "com.sun.star.connection.socketConnector";
/**
* Returns a factory for creating the service.
*
* <p>This method is called by the <code>JavaLoader</code>.</p>
*
* @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 <code>XSingleServiceFactory</code> for creating the component.
*
* @see com.sun.star.comp.loader.JavaLoader
*/
public static XSingleServiceFactory __getServiceFactory(
String implName, XMultiServiceFactory multiFactory, XRegistryKey regKey)
{
return implName.equals(socketConnector.class.getName())
? FactoryHelper.getServiceFactory(socketConnector.class,
__serviceName, multiFactory,
regKey)
: null;
}
/**
* Writes the service information into the given registry key.
*
* <p>This method is called by the <code>JavaLoader</code>.</p>
*
* @param regKey the registry key.
* @return <code>true</code> if the operation succeeded.
*
* @see com.sun.star.comp.loader.JavaLoader
*/
public static boolean __writeRegistryServiceInfo(XRegistryKey regKey) {
return FactoryHelper.writeRegistryServiceInfo(
socketConnector.class.getName(), __serviceName, regKey);
}
/**
* Connects via the described socket to a waiting server.
*
* <p>The connection description has the following format:
* <code><var>type</var></code><!--
* -->*(<code><var>key</var>=<var>value</var></code>),
* where <code><var>type</var></code> should be <code>socket</code>
* (ignoring case). Supported keys (ignoring case) currently are
* <dl>
* <dt><code>host</code>
* <dd>The name or address of the server. Must be present.
* <dt><code>port</code>
* <dd>The TCP port number of the server (defaults to <code>6001</code>).
* <dt><code>tcpnodelay</code>
* <dd>A flag (<code>0</code>/<code>1</code>) enabling or disabling Nagle's
* algorithm on the resulting connection.
* </dl></p>
*
* @param connectionDescription the description of the connection.
* @return an <code>XConnection</code> to the server.
*
* @see com.sun.star.connections.XAcceptor
* @see com.sun.star.connections.XConnection
*/
public synchronized XConnection connect(String connectionDescription)
throws NoConnectException, ConnectionSetupException
{
if (connected) {
throw new ConnectionSetupException("alread connected");
}
ConnectionDescriptor desc;
try {
desc = new ConnectionDescriptor(connectionDescription);
} catch (com.sun.star.lang.IllegalArgumentException e) {
throw new ConnectionSetupException(e.toString());
}
if (desc.getHost() == null) {
throw new ConnectionSetupException("host parameter missing");
}
// Try all (IPv4 and IPv6) addresses, in case this client is on a
// dual-stack host and the server process is an IPv4-only process, also
// on a dual-stack host (see Stevens, Fenner, Rudoff: "Unix Network
// Programming, Volume 1: The Sockets Networking API, 3rd Edition",
// p. 359):
InetAddress[] adr;
try {
adr = InetAddress.getAllByName(desc.getHost());
} catch (UnknownHostException e) {
throw new ConnectionSetupException(e.toString());
}
Socket socket = null;
for (int i = 0; i < adr.length; ++i) {
try {
socket = new Socket(adr[i], desc.getPort());
break;
} catch (IOException e) {
if (i == adr.length - 1) {
throw new NoConnectException(e.toString());
}
}
}
XConnection con;
try {
if (desc.getTcpNoDelay() != null) {
socket.setTcpNoDelay(desc.getTcpNoDelay().booleanValue());
}
con = new SocketConnection(connectionDescription, socket);
} catch (IOException e) {
throw new NoConnectException(e.toString());
}
connected = true;
return con;
}
private boolean connected = false;
}