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Protocol

License Build Status Discord

Introduction

A protocol library for Minecraft that supports multiple versions. (Currently Bedrock Edition only)

Links

Usage

Client

Creating a client
// 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();
Pinging a Remote Server

This can be done whilst the client is connected to a server however it cannot be to the connected server.

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.
Connecting to a Remote Server

A BedrockClient can only have one session per instance. If you need more, create extra instances.

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.

Server

Creating a Server
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();

Maven

Protocol Versions:
Dependency Minecraft Version
bedrock-v291 1.7.0
bedrock-v313 1.8.0
bedrock-v332 1.9.0
bedrock-v340 1.10.0
bedrock-v354 1.11.0
bedrock-v361 1.12.0
bedrock-v388 1.13.0
bedrock-v389 1.14.0 - 1.14.50
bedrock-v390 1.14.60
bedrock-v407 1.16.0 - 1.16.10
bedrock-v408 1.16.20
bedrock-v419 1.16.100
bedrock-v422 1.16.200 - 1.16.201
bedrock-v428 1.16.210
bedrock-v431 1.16.220
bedrock-v440 1.17.0
bedrock-v448 1.17.10 - 1.17.11
bedrock-v465 1.17.30 - 1.17.34
bedrock-v471 1.17.40 - 1.17.41
bedrock-v475 1.18.0
bedrock-v486 1.18.10
bedrock-v503 1.18.30
bedrock-v527 1.19.0
bedrock-v534 1.19.10
bedrock-v544 1.19.20
bedrock-v545 1.19.21
bedrock-v554 1.19.31
bedrock-v557 1.19.40
bedrock-v560 1.19.50
bedrock-v567 1.19.60
Repository:
<repositories>
    <repository>
        <id>opencollab-releases</id>
        <url>https://repo.opencollab.dev/maven-releases/</url>
    </repository>
    <repository>
        <id>opencollab-snapshots</id>
        <url>https://repo.opencollab.dev/maven-snapshots/</url>
    </repository>
</repositories>
Dependencies:
    <dependencies>
        <dependency>
            <groupId>com.nukkitx.protocol</groupId>
            <artifactId>bedrock-v(VERSION)</artifactId>
            <version>2.9.17-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>

Projects Using This Library

If you would like to add your project here, please create a pull request.