我刚刚进入网络，我对如何使用服务器托管公司的服务器进行游戏非常困惑。目前，该程序允许用户从他们的计算机托管服务器，它在某种程度上工作。唯一的问题是，当我的朋友从其他州连接到游戏时，他们的ping超级高，他们可怕地落后。
我现在正在使用提供免费网络托管空间的网站。我相信我已经跳过了我需要的大部分权限，以便使用套接字，而applet就像在我的计算机上运行一样工作。
以下是Game类的摘录。如果我使用InetAddress.getLocalHost（）。getHostAddress（）来获取IP，它将从正在使用客户端的用户获取IP并使其成为服务器主机。这有效，但它并没有解决我的滞后问题。
Game.java
public synchronized void start() {
running = true;
thread = new Thread(this, NAME + "_main");
thread.start();
if (JOptionPane.showConfirmDialog(this, "Do you want to run the server") == 0) {
socketServer = new GameServer(this);
socketServer.start();
}
this.ipAddress = "31.170.163.198";
//this.ipAddress = InetAddress.getByName(ipAddress).toString();
System.out.println("IP: " + this.ipAddress);
socketClient = new GameClient(this, this.ipAddress);//Inet4Address.getLocalHost().getHostAddress());
try {
Player.setIp(Inet4Address.getLocalHost().getHostAddress());
} catch (UnknownHostException e) {
e.printStackTrace();
}
socketClient.start();
}
我希望包含jar的服务器托管服务器。我们都互相ping测试，我们大多数都得到了超时，但是，当我们ping服务器的ip时，我们都得到了不错的ping。当我手动输入服务器的IP（我在控制面板中找到此信息）时，服务器/客户端无法建立连接。我尝试过使用提供的网站IP和服务器IP。我还尝试使用applet.getCodeBase（）。getHost（）以便从服务器检索IP，但IP也无法发送/接收数据。
我正在尝试做什么？服务器阻止我以这种方式使用它吗？我是否需要重写整个程序并查看java servlet以实现我的目标？
如果问题很愚蠢，我道歉。在过去的3-4天里，我一直在努力解决这个问题，但进展甚微。我已经用这种方式搜索了一下使用服务器，我发现这个话题很少。以下是其他相关代码段的摘录。
GameClient.java
package fraccas.java2dgame.net;
public class GameClient extends Thread {
private InetAddress ipAddress;
private DatagramSocket socket;
private Game game;
public long lastPing = 0;
public static int ping = 0;
public GameClient(Game game, String ipAddress) {
this.game = game;
try {
this.socket = new DatagramSocket();
this.ipAddress = InetAddress.getByName(ipAddress);
System.out.println("IP: " + InetAddress.getByName(ipAddress));
} catch (SocketException e) {
e.printStackTrace();
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
public void run() {
while (true) {
byte[] data = new byte[1024];
DatagramPacket packet = new DatagramPacket(data, data.length);
try {
socket.receive(packet);
if (packet != null)
{
long current = System.currentTimeMillis();
ping = (int) (current - lastPing);
lastPing = current;
}
} catch (IOException e) {
e.printStackTrace();
}
this.parsePacket(packet.getData(), packet.getAddress(), packet.getPort());
}
}
private void parsePacket(byte[] data, InetAddress address, int port) {
String message = new String(data).trim();
PacketTypes type = Packet.lookupPacket(message.substring(0, 2));
Packet packet = null;
switch (type) {
default:
case INVALID:
break;
case LOGIN:
packet = new Packet00Login(data);
handleLogin((Packet00Login) packet, address, port);
break;
case DISCONNECT:
packet = new Packet01Disconnect(data);
System.out.println("[" + address.getHostAddress() + ":" + port + "] "
+ ((Packet01Disconnect) packet).getUsername() + " has left the world...");
game.level.removePlayerMP(((Packet01Disconnect) packet).getUsername());
break;
case MOVE:
packet = new Packet02Move(data);
handleMove((Packet02Move) packet);
}
}
public void sendData(byte[] data) {
//if (!game.isApplet) {
DatagramPacket packet = new DatagramPacket(data, data.length, ipAddress, 3333);
try {
socket.send(packet);
} catch (IOException e) {
e.printStackTrace();
}
//}
}
private void handleLogin(Packet00Login packet, InetAddress address, int port) {
System.out.println("[" + address.getHostAddress() + ":" + port + "] " + packet.getUsername()
+ " has joined the game...");
PlayerMP player = new PlayerMP(game.level, packet.getX(), packet.getY(), packet.getUsername(), address, port);
game.level.addEntity(player);
}
private void handleMove(Packet02Move packet) {
this.game.level.movePlayer(packet.getUsername(), packet.getX(), packet.getY(), packet.getNumSteps(),
packet.isMoving(), packet.getMovingDir());
}
}
GameServer.java
package fraccas.java2dgame.net;
public class GameServer extends Thread {
private DatagramSocket socket;
private Game game;
private List<PlayerMP> connectedPlayers = new ArrayList<PlayerMP>();
public GameServer(Game game) {
this.game = game;
try {
this.socket = new DatagramSocket(3333);
} catch (SocketException e) {
e.printStackTrace();
}
}
public void run() {
while (true) {
byte[] data = new byte[1024];
DatagramPacket packet = new DatagramPacket(data, data.length);
try {
socket.receive(packet);
} catch (IOException e) {
e.printStackTrace();
}
this.parsePacket(packet.getData(), packet.getAddress(), packet.getPort());
}
}
private void parsePacket(byte[] data, InetAddress address, int port) {
String message = new String(data).trim();
PacketTypes type = Packet.lookupPacket(message.substring(0, 2));
Packet packet = null;
switch (type) {
default:
case INVALID:
break;
case LOGIN:
packet = new Packet00Login(data);
System.out.println("[" + address.getHostAddress() + ":" + port + "] "
+ ((Packet00Login) packet).getUsername() + " has connected...");
PlayerMP player = new PlayerMP(game.level, 100, 100, ((Packet00Login) packet).getUsername(), address, port);
this.addConnection(player, (Packet00Login) packet);
break;
case DISCONNECT:
packet = new Packet01Disconnect(data);
System.out.println("[" + address.getHostAddress() + ":" + port + "] "
+ ((Packet01Disconnect) packet).getUsername() + " has left...");
this.removeConnection((Packet01Disconnect) packet);
break;
case MOVE:
packet = new Packet02Move(data);
this.handleMove(((Packet02Move) packet));
}
}
public void addConnection(PlayerMP player, Packet00Login packet) {
boolean alreadyConnected = false;
for (PlayerMP p : this.connectedPlayers) {
if (player.getUsername().equalsIgnoreCase(p.getUsername())) {
if (p.ipAddress == null) {
p.ipAddress = player.ipAddress;
}
if (p.port == -1) {
p.port = player.port;
}
alreadyConnected = true;
} else {
// relay to the current connected player that there is a new
// player
sendData(packet.getData(), p.ipAddress, p.port);
// relay to the new player that the currently connect player
// exists
//packet = new Packet00Login(p.getUsername(), p.x, p.y);
Packet00Login packetNew = new Packet00Login(p.getUsername(), p.x, p.y);
sendData(packetNew.getData(), player.ipAddress, player.port);
}
}
if (!alreadyConnected) {
this.connectedPlayers.add(player);
}
}
public void removeConnection(Packet01Disconnect packet) {
this.connectedPlayers.remove(getPlayerMPIndex(packet.getUsername()));
packet.writeData(this);
}
public PlayerMP getPlayerMP(String username) {
for (PlayerMP player : this.connectedPlayers) {
if (player.getUsername().equals(username)) {
return player;
}
}
return null;
}
public int getPlayerMPIndex(String username) {
int index = 0;
for (PlayerMP player : this.connectedPlayers) {
if (player.getUsername().equals(username)) {
break;
}
index++;
}
return index;
}
public void sendData(byte[] data, InetAddress ipAddress, int port) {
//if (!game.isApplet) {
DatagramPacket packet = new DatagramPacket(data, data.length, ipAddress, port);
try {
this.socket.send(packet);
} catch (IOException e) {
e.printStackTrace();
}
//}
}
public void sendDataToAllClients(byte[] data) {
for (PlayerMP p : connectedPlayers) {
sendData(data, p.ipAddress, p.port);
}
}
private void handleMove(Packet02Move packet) {
if (getPlayerMP(packet.getUsername()) != null) {
int index = getPlayerMPIndex(packet.getUsername());
PlayerMP player = this.connectedPlayers.get(index);
player.x = packet.getX();
player.y = packet.getY();
player.setMoving(packet.isMoving());
player.setMovingDir(packet.getMovingDir());
player.setNumSteps(packet.getNumSteps());
packet.writeData(this);
}
}
此时applet在控制台中没有任何错误。它根本不发送/接收数据。
http://critterisland.bugs3.com/public_html/index.html（小程序链接） http://gyazo.com/a91401545b1a741f2b9fc86471bd5762（Applet图片）
谢谢你的时间， Fraccas
答案 0 :(得分：0)
问题在于您使用的Web主机只能向用户提供文件，而不是实际能够运行您创建的软件。
要以您想要的方式独立运行您的软件，最简单的选择是租用适合您的用户的虚拟专用服务器（VPS）。但是，您需要能够在VPS上进行一些基本配置（例如安装Java），然后将服务器作为控制台应用程序运行。
需要更改代码才能使其正常工作。您可以通过添加仅启动服务器的命令行参数（即“-server”）为服务器和客户端使用相同的jar文件。从服务器计算机/ VPS，您将通过运行“java -jar CritterIslandTest.jar -server”启动服务器，然后只启动服务器并处理通信。如果未找到命令行参数，则可以继续使用GUI逻辑。