将客户端连接到服务器 Kryonet 和 Libgdx

Question

我正在尝试从使用 libgdx 作为接口的客户端连接到服务器。我在客户端和服务器上都使用 Kryonet。但是它不起作用。知道出了什么问题吗？

这是我在客户端中使用的代码：

     Client client = new Client();
        Kryo kryo = client.getKryo();
        kryo.register(String.class);
        client.start();
        new Thread() {
            public void run() {
                try {
                    client.connect(5000, "localhost", 54555, 54777);
                    client.addListener(new Listener() {
                        public void received(Connection connection, Object object) {
                            if (object instanceof String) {
                                String response = (String) object;
                                System.out.println(response);
                            }
                        }
                    });
                } catch (IOException e) {
                    Log.warn("expection", e);
                }
            }
        }.start();
   client.sendTCP("Hey There");

这是服务器代码：

Server server = new Server();
    Kryo kryo = server.getKryo();
            kryo.register(String.class);
            server.start();
            try {
                server.bind(54555, 54777);
            } catch (IOException e) {
                e.printStackTrace();
            }

            server.addListener(new Listener() {
                public void received (Connection connection, Object object) {
                   if (object instanceof String) {
                      String request = (String)object;
                      System.out.println("Server"+request);

                      String response = "Login succes";
                      connection.sendTCP(response);
                   }
                }
             });

这是我得到的错误：

[kryonet] Error updating connection.
com.esotericsoftware.kryonet.KryoNetException: Incorrect number of bytes (1 remaining) used to deserialize object: null
    at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:146)
    at com.esotericsoftware.kryonet.Client.update(Client.java:255)
    at com.esotericsoftware.kryonet.Client.run(Client.java:338)
    at java.lang.Thread.run(Unknown Source)
Exception in thread "Client" com.esotericsoftware.kryonet.KryoNetException: Incorrect number of bytes (1 remaining) used to deserialize object: null
    at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:146)
    at com.esotericsoftware.kryonet.Client.update(Client.java:255)
    at com.esotericsoftware.kryonet.Client.run(Client.java:338)
    at java.lang.Thread.run(Unknown Source)
00:05  WARN: expection
java.net.SocketTimeoutException: Connected, but timed out during TCP registration.
Note: Client#update must be called in a separate thread during connect.
    at com.esotericsoftware.kryonet.Client.connect(Client.java:168)
    at com.esotericsoftware.kryonet.Client.connect(Client.java:117)
    at me.fort.historywars.LoginScreen.run(LoginScreen.java:37)

Answer 1

好的，我认为此代码已修复：

服务器：

server = new Server();
    Kryo kryo = server.getKryo();
    kryo.register(SRq.class);
    server.start();
    try {
        server.bind(54555, 54777);
    } catch (Exception e) {
        System.err.println("Failed to bind to port!");
    }
    server.addListener(new Listener() {
        @Override
        public void received(Connection connection, Object object) {
            if(object instanceof SRq) {
                System.out.println("Server " +  ((SRq) object).data);
                SRq sRq = new SRq();
                sRq.data = "Data";
                connection.sendTCP(sRq);
            }
        }
    });

客户：

client = new Client();
    Kryo kryo = client.getKryo();
    kryo.register(SRq.class);
    client.start();
    try {
        client.connect(6000, "localhost", 54555, 54777);
    } catch (Exception e) {
        System.err.println("Failed to connect to server!");
    }
    client.addListener(new Listener() {
        @Override
        public void received(Connection connection, Object object) {
            if(object instanceof SRq) {
                Gdx.app.log("Client", ((SRq) object).data);
            }
        }
    });
    System.out.println("Connected to server!");

    SRq sRq = new SRq();
    sRq.data = "Log in";
    client.sendTCP(sRq);

注意事项：

SRq.class 只是一个 class 里面有一个 public String
确保您在客户端和服务器中使用相同的 KryoNet 版本。我用了kryonet-2.21-all。下载 jars，在核心文件夹中创建一个名为 libs 的文件夹，将 jar 放入其中，并将其添加到 build.gradle（在核心依赖项中）：compile fileTree(dir: 'libs', include: '*.jar')

将客户端连接到服务器 Kryonet 和 Libgdx

Connecting client to server Kryonet and Libgdx

java

network-programming

libgdx

kryonet