So I'm trying out kryonet, sending a custom packet, but the listener in my server can't seem to pick it up.
server.addListener(new Listener() {
@SuppressWarnings("unused")
public void received(Connection connection, Object object) {
System.out.println("received");
if (object instanceof Packet) {
Packet p = (Packet) object;
System.out.println(p.name);
}
}
});
Sending:
Packet p = new Packet();
p.name = "test";
client.sendTCP(p);
Reading through other threads, I've tried using new Thread(client).start(); instead of client.start();, and I've added empty constructors to my packet classes, but the client either connects, then hangs and never disconnects (if I'm using new Thread(client).start()) or connects then immediately disconnects (if I'm using client.start()). Nothing is ever printed. Any help is appreciated.
These are the necessary steps to make KryoNet work:
Server server = new Server();
Kryo kryo = server.getKryo();
kryo.register(float[].class);
server.start();
server.bind(2300, 2301);
server.addListener(new Listener() {
public void received(Connection connection, Object object)
{
if(object instanceof float[])
{
float[] array = (float[])object;
}
}
});
Client client = new Client();
Kryo kryo = client.getKryo();
kryo.register(float[].class);
client.addListener(new Listener() {
public void connected(Connection connection)
{
connection.sendTCP(new float[] {5.0f, 6.0f, 7.0f, 8.0f});
}
});
client.start();
client.connect(5000, "127.0.0.1”, 2300, 2301);
Of course, you can use client.sendTCP() once you've connected to the server. Replace the float[] with Packet, and it should work.
You don't need to mess with making threads yourself, KryoNet is already asynchronous, except for the discoverHost() method call if you use it.
EDIT: I whipped up an example project that works.
Packet.java:
public class Packet
{
private String message;
public Packet()
{
}
public Packet(String message)
{
this.message = message;
}
public String getMessage()
{
return message;
}
public void setMessage(String message)
{
this.message = message;
}
}
KryoClient.java:
public class KryoClient
{
private Client client;
public KryoClient() throws IOException
{
client = new Client();
Kryo kryo = client.getKryo();
kryo.register(float[].class);
kryo.register(Packet.class);
//kryo.register(String.class);
client.addListener(new Listener() {
public void connected(Connection connection)
{
//connection.sendTCP(new float[] {5.0f, 6.0f, 7.0f, 8.0f});
connection.sendTCP(new Packet("Hello, Server! You're sexy, rawr :3"));
}
@Override
public void received(Connection connection, Object object)
{
if (object instanceof float[])
{
float[] array = (float[]) object;
for(float a : array)
{
System.out.println(a);
}
}
else if(object instanceof Packet)
{
Packet packet = (Packet) object;
System.out.println("Message: " + packet.getMessage());
connection.sendTCP(new Packet("The packet has arrived to client."));
}
}
@Override
public void disconnected(Connection arg0)
{
System.out.println("Server disconnected.");
}
});
client.start();
client.connect(5000, "127.0.0.1", 2305, 2306);
}
public Client getClient()
{
return client;
}
public void setClient(Client client)
{
this.client = client;
}
}
KryoServer.java:
public class KryoServer
{
private Server server;
public KryoServer() throws IOException
{
server = new Server();
Kryo kryo = server.getKryo();
kryo.register(float[].class);
kryo.register(Packet.class);
//kryo.register(String.class);
server.start();
server.bind(2305, 2306);
server.addListener(new Listener()
{
@Override
public void connected(Connection connection)
{
connection.sendTCP(new Packet("Server says, connected to server."));
}
@Override
public void received(Connection connection, Object object)
{
if (object instanceof float[])
{
float[] array = (float[]) object;
for(float a : array)
{
System.out.println(a);
}
}
else if(object instanceof Packet)
{
Packet packet = (Packet) object;
System.out.println("Message: " + packet.getMessage());
//connection.sendTCP(new Packet("The packet has arrived to server."));
}
}
@Override
public void disconnected(Connection connection)
{
System.out.println("Client disconnected.");
}
});
}
public Server getServer()
{
return server;
}
public void setServer(Server server)
{
this.server = server;
}
}
ClientThread.java:
public class ClientThread extends Thread
{
private KryoClient client;
private volatile boolean running;
public ClientThread(KryoClient client)
{
this.client = client;
running = true;
}
@Override
public void run()
{
long initTime = System.currentTimeMillis();
while(running)
{
if(System.currentTimeMillis() - initTime > 1000)
{
initTime = System.currentTimeMillis();
client.getClient().sendTCP(new Packet("Hello from " + System.currentTimeMillis()));
//should have used Thread.sleep(1000); instead
}
}
}
public void stopThread()
{
running = false;
}
}
MyMain.java:
public class MyMain
{
private static KryoClient kryoClient = null;
private static KryoServer kryoServer = null;
private static ClientThread thread = null;
public static void main(String[] args) throws IOException
{
BufferedReader br = null;
System.out.println("What's up, doc?");
System.out.println("Press '1' for server.");
System.out.println("Press '2' for client.");
try
{
br = new BufferedReader(new InputStreamReader(System.in));
String line = br.readLine();
int number = Integer.parseInt(line);
if (number == 1)
{
kryoServer = new KryoServer();
System.out.println("Server started.");
}
else if (number == 2)
{
kryoClient = new KryoClient();
System.out.println("Client started.");
thread = new ClientThread(kryoClient);
thread.start();
}
System.out.println("Press a button to exit.");
br.readLine();
System.out.println("Test end.");
}
finally
{
if(kryoClient != null)
{
kryoClient.getClient().stop();
}
if(kryoServer != null)
{
kryoServer.getServer().stop();
}
if (br != null)
{
br.close();
}
if (thread != null)
{
thread.stopThread();
}
}
}
}
And it works.
来源：https://stackoverflow.com/questions/24134655/kryonet-packet-not-sent