// VECR Interactive IO Server

import java.net.*;
import java.io.*;
import java.util.*;

public class IOserver extends Thread
{
  private int port;

  private IOserver( int port)
  {
    this.port = port;
  }

  public void run()
  {
    ServerSocket server = null;
    Socket client = null;
    final int backlog = 32;
    String name;
    Date now;

    try
    {
      server = new ServerSocket( port, backlog, InetAddress.getByName( "localhost"));
    }
    catch( Exception e)
    {
      e.printStackTrace( System.out);
      System.out.flush();
      return;
    }

    now = new Date();
    System.out.println( now + ": accepting connections on port " + port);
    System.out.flush();

    while(true)
    {
      try
      {
        client = server.accept();
	name = client.getInetAddress().toString() + ":" + client.getPort();
        now = new Date();
        synchronized( System.out)
	{
          System.out.println( now + ": connect from " + name);
          System.out.flush();
        }
        client.setSoTimeout( 1800000); // 30 minute timeout on read()
        IOclient C = new IOclient( client, name);
        C.start();
      }
      catch( IOException e)
      {
        synchronized( System.out)
	{
          e.printStackTrace( System.out);
          System.out.flush();
        }
      }
      System.gc(); // run garbage collector
    }
  }

  public static void main (String args[]) throws Exception
  {
    IOserver s = new IOserver( 7);
    s.start();
  }

}