Program: 49971
Project: 49971
Buggy source:
public void host(PlayNetGame png) throws Exception {
  ServerSocket serverSocket=null;
  try {
  }
 catch (  Exception e) {
    System.out.println(e.getMessage());
  }
  Socket clientSocket=null;
  while (clientSocket == null) {
    try {
      serverSocket=new ServerSocket(27335);
      serverSocket.setSoTimeout(10000);
      clientSocket=serverSocket.accept();
    }
 catch (    Exception e) {
      if (NewGameMenu.cancelled)       return;
    }
  }
  System.out.println("String_Node_Str");
  ObjectOutputStream out=new ObjectOutputStream(clientSocket.getOutputStream());
  ObjectInputStream in=new ObjectInputStream(clientSocket.getInputStream());
  boolean playing=true;
  Object fromUser;
  Object fromServer;
  Game g=PlayNetGame.getGame();
  fromServer=g;
  if (fromServer != null)   out.writeObject(fromServer);
  Driver.getInstance().setPanel(png);
  while (g.isBlackMove() == false) {
    while (png.netMove == null)     Thread.sleep(0);
    fromServer=png.netMove;
    png.netMove=null;
    out.writeObject(fromServer);
    System.out.println("String_Node_Str" + fromServer.toString());
    out.flush();
  }
  try {
    while (playing) {
      while (g.isBlackMove() == true) {
        fromUser=in.readObject();
        NetMove toMove=(NetMove)fromUser;
        g.playMove(g.fakeToRealMove((NetMove)fromUser));
        if (g.getLastMove().getResult() != null)         break;
      }
      while (g.isBlackMove() == false) {
        while (png.netMove == null)         Thread.sleep(0);
        fromServer=png.netMove;
        png.netMove=null;
        out.writeObject(fromServer);
        out.flush();
        if (g.getLastMove().getResult() != null)         break;
      }
    }
  }
 catch (  Exception e) {
    out.close();
    in.close();
    clientSocket.close();
    serverSocket.close();
  }
  out.close();
  in.close();
  clientSocket.close();
  serverSocket.close();
}

Fixed version (ground truth):
public void host(PlayNetGame png) throws Exception {
  ServerSocket serverSocket=null;
  Socket clientSocket=null;
  serverSocket=new ServerSocket(27335);
  serverSocket.setSoTimeout(1000);
  while (clientSocket == null) {
    try {
      PlayGame.resetTimers();
      clientSocket=serverSocket.accept();
    }
 catch (    Exception e) {
      if (NewGameMenu.cancelled)       return;
    }
  }
  ObjectOutputStream out=new ObjectOutputStream(clientSocket.getOutputStream());
  ObjectInputStream in=new ObjectInputStream(clientSocket.getInputStream());
  boolean playing=true;
  Object fromUser;
  Object fromServer;
  Game g=PlayNetGame.getGame();
  fromServer=g;
  if (fromServer != null)   out.writeObject(fromServer);
  PlayGame.resetTimers();
  Driver.getInstance().setPanel(png);
  while (g.isBlackMove() == false) {
    while (png.netMove == null)     Thread.sleep(0);
    fromServer=png.netMove;
    png.netMove=null;
    out.writeObject(fromServer);
    System.out.println("String_Node_Str" + fromServer.toString());
    out.flush();
  }
  try {
    while (playing) {
      while (g.isBlackMove() == true) {
        fromUser=in.readObject();
        NetMove toMove=(NetMove)fromUser;
        g.playMove(g.fakeToRealMove((NetMove)fromUser));
        if (g.getLastMove().getResult() != null)         break;
      }
      while (g.isBlackMove() == false) {
        while (png.netMove == null)         Thread.sleep(0);
        fromServer=png.netMove;
        png.netMove=null;
        out.writeObject(fromServer);
        out.flush();
        if (g.getLastMove().getResult() != null)         break;
      }
    }
  }
 catch (  Exception e) {
    out.close();
    in.close();
    clientSocket.close();
    serverSocket.close();
  }
  out.close();
  in.close();
  clientSocket.close();
  serverSocket.close();
}