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/*************************************************
*
* = PACKAGE
* JACE.Connection
*
* = FILENAME
* AcceptStrategy.java
*
*@author Prashant Jain
*@author Everett Anderson
*
*************************************************/
package JACE.Connection;
import java.io.*;
import java.net.*;
import JACE.SOCK_SAP.*;
/**
* Interface for specifying a passive connection
* acceptance strategy for a
* <a href="ACE.Connection.SvcHandler.html"><tt>SvcHandler</tt></a>
* .
* <P>
* This class provides a strategy that manages passive
* connection setup for an application, and can be extended
* to define new strategies.
* <P>
*
* The default implementation delegates to a generic Acceptor.
*
*@see SvcHandler
*@see Acceptor
*/
public class AcceptStrategy
{
/**
* Create an instance of AcceptStrategy that delegates to the given
* Acceptor.
*@param port port number where the server will listen for connections
*@param peer Acceptor instance to delegate to
*/
AcceptStrategy (int port, Acceptor peer) throws IOException
{
this.acceptor_ = peer;
this.open (port);
}
/**
* Create an instance of Accept Strategy that delegates to Acceptor.
*@param port port number where the server will listen for connections
*@exception IOException couldn't open port
*/
AcceptStrategy (int port) throws IOException
{
this.acceptor_ = new Acceptor ();
this.open (port);
}
/**
* Initialize AcceptStrategy.
*@param port port number where the server will listen for connections
*@exception IOException couldn't open port
*/
public void open (int port) throws IOException
{
this.acceptor_.open (port);
}
/**
* Accept connections into the SvcHandler. Note that subclasses
* should overwrite this method to provide a different accept
* strategy.
*@param sh Svc Handler in which to accept the connection
*@exception SocketException Socket error
*@exception IOException Socket error
*@return 0
*/
public int acceptSvcHandler (SvcHandler sh) throws
SocketException, IOException
{
return this.acceptor_.acceptSvcHandler (sh);
}
// The Acceptor we delegate to (if any)
private Acceptor acceptor_;
}
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