// This is the local address to bind to, not the remote one.
// If bound to 127.0.0.1 any incoming packets from outside your computer will not be received.
InetSocketAddress bindAddress = new InetSocketAddress("0.0.0.0", 12345);
BedrockClient client = new BedrockClient(bindAddress);

// Bind the port
client.bind().join();

InetSocketAddress addressToPing = new InetSocketAddress("play.nukkitx.com", 19132);
client.ping(addressToPing).whenComplete((pong, throwable) -> {
    if (throwable != null) {
        // Error occurred or timeout
        return;
    }
    // Pong received.
}).join(); // Join if you do not want this to be handled asynchronously.

InetSocketAddress addressToConnect = new InetSocketAddress("play.nukkitx.com", 19132);
client.connect(addressToConnect).whenComplete((session, throwable) -> {
    if (throwable != null) {
        // Unable to establish connection
        return;
    }
    // Connection established
    // Make sure to set the packet codec version you wish to use before sending out packets
    session.setPacketCodec(Bedrock_v389.V389_CODEC);
    // Add disconnect handler
    session.addDisconnectHandler((reason) -> System.out.println("Disconnected"));
    // Remember to set a packet handler so you receive incoming packets
    session.setPacketHandler(new FooBarPacketHandler());
    // Now send packets...
}).join(); // Join if you do not want this to be handled asynchronously.

InetSocketAddress bindAddress = new InetSocketAddress("0.0.0.0", 19132);
BedrockServer server = new BedrockServer(bindAddress);

BedrockPong pong = new BedrockPong();
pong.setEdition("MCPE");
pong.setMotd("My Server");
pong.setPlayerCount(0);
pong.setMaximumPlayerCount(20);
pong.setGameType("Survival");
pong.setProtocolVersion(Bedrock_v389.V389_CODEC.getProtocolVersion());

server.setHandler(new BedrockServerEventHandler() {
    @Override
    public boolean onConnectionRequest(InetSocketAddress address) {
        return true; // Connection will be accepted
    }
    
    @Override
    public BedrockPong onQuery(InetSocketAddress address) {
        return pong;
    }
    
    @Override
    public void onSessionCreation(BedrockServerSession serverSession) {
        // Connection established
        // Add disconnect handler
        session.addDisconnectHandler((reason) -> System.out.println("Disconnected"));
        // Remember to set a packet handler so you receive incoming packets
        session.setPacketHandler(new FooBarPacketHandler());
        // By default, the server will use a compatible codec that will read any LoginPacket.
        // After receiving the LoginPacket, you need to set the correct packet codec for the client and continue. 
    }
});

// Start server up
server.bind().join();