A Minecraft server implemented in Go
License: MIT License
Minecraft Server implementation written in Go
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Implementation of server bound packets.
decide on configuration style.
Seems a lot of the packets have out of date IDs
So in the terminal I see, that the server receives packets eg when I ping or try to join, but the client doesn’t receive anything.So ping/status doesn’t work and also jointing doesn’t work or is it beacuse I’m using the 1.8.9(Client Version)?But still if so I’m not getting an error for the ring version, or isn’t that implemented?Im sorry, I did not have so much time till now to actually read the code etc.
This function returns a number with at least the same magnitude (positive or negative) as var0, but which is also divisible by var1. An appropriate name might be findNextLargestNumberEvenlyDivisibleBy or similar.
It appears that the only place where this is used, it is being used to figure out how many 64-bit chunks are required to store some data. So for example, if you have 92 bits of data to store, it will return 128 (which the caller then divides by 64 to get 2).
Steps to actually being in the game. (from wiki.vg)
panic: runtime error: index out of range [64] with length 64
goroutine 19 [running]:
github.com/golangmc/minecraft-server/impl/conn/crypto.(*cfb8).XORKeyStream(0xc0001428c0, 0xc001ba0000, 0x1d19f, 0x1d19f, 0xc001b82000, 0x1d19f, 0x1e000)
/home/jack/Dev/minecraft-server/impl/conn/crypto/cfb8.go:66 +0x249
github.com/golangmc/minecraft-server/impl/conn.(*connection).Encrypt(...)
/home/jack/Dev/minecraft-server/impl/conn/connect.go:64
github.com/golangmc/minecraft-server/impl/conn.(*connection).SendPacket(0xc000296150, 0x7bf040, 0xc000396010)
/home/jack/Dev/minecraft-server/impl/conn/connect.go:172 +0x248
github.com/golangmc/minecraft-server/impl/game/mode.HandleState3.func5(0xc00010e1e0, 0xc000162400)
/home/jack/Dev/minecraft-server/impl/game/mode/mode_state3.go:154 +0xeb
created by github.com/golangmc/minecraft-server/impl/game/mode.HandleState3
/home/jack/Dev/minecraft-server/impl/game/mode/mode_state3.go:80 +0x20e
import com.github.steveice10.mc.auth.exception.request.RequestException;
import com.github.steveice10.mc.protocol.MinecraftConstants;
import com.github.steveice10.mc.protocol.MinecraftProtocol;
import com.github.steveice10.mc.protocol.data.SubProtocol;
import com.github.steveice10.mc.protocol.data.message.Message;
import com.github.steveice10.mc.protocol.data.message.TranslationMessage;
import com.github.steveice10.mc.protocol.data.status.ServerStatusInfo;
import com.github.steveice10.mc.protocol.data.status.handler.ServerInfoHandler;
import com.github.steveice10.mc.protocol.data.status.handler.ServerPingTimeHandler;
import com.github.steveice10.mc.protocol.packet.ingame.client.ClientChatPacket;
import com.github.steveice10.mc.protocol.packet.ingame.server.ServerChatPacket;
import com.github.steveice10.mc.protocol.packet.ingame.server.ServerJoinGamePacket;
import com.github.steveice10.mc.protocol.packet.ingame.server.world.ServerChunkDataPacket;
import com.github.steveice10.packetlib.Client;
import com.github.steveice10.packetlib.ProxyInfo;
import com.github.steveice10.packetlib.Session;
import com.github.steveice10.packetlib.event.session.DisconnectedEvent;
import com.github.steveice10.packetlib.event.session.PacketReceivedEvent;
import com.github.steveice10.packetlib.event.session.SessionAdapter;
import com.github.steveice10.packetlib.tcp.TcpSessionFactory;
import java.net.Proxy;
import java.util.Arrays;
public class TestClient {
private static final boolean SPAWN_SERVER = false;
private static final boolean VERIFY_USERS = true;
private static final String HOST = "127.0.0.1";
private static final int PORT = 25565;
private static final ProxyInfo PROXY = null;
private static final Proxy AUTH_PROXY = Proxy.NO_PROXY;
private static final String USERNAME = "********";
private static final String PASSWORD = "********";
public static void main(String[] args) {
status();
login();
}
private static void status() {
MinecraftProtocol protocol = new MinecraftProtocol(SubProtocol.STATUS);
Client client = new Client(HOST, PORT, protocol, new TcpSessionFactory(PROXY));
client.getSession().setFlag(MinecraftConstants.AUTH_PROXY_KEY, AUTH_PROXY);
client.getSession().setFlag(MinecraftConstants.SERVER_INFO_HANDLER_KEY, new ServerInfoHandler() {
@Override
public void handle(Session session, ServerStatusInfo info) {
System.out.println("Version: " + info.getVersionInfo().getVersionName() + ", " + info.getVersionInfo().getProtocolVersion());
System.out.println("Player Count: " + info.getPlayerInfo().getOnlinePlayers() + " / " + info.getPlayerInfo().getMaxPlayers());
System.out.println("Players: " + Arrays.toString(info.getPlayerInfo().getPlayers()));
System.out.println("Description: " + info.getDescription().getFullText());
System.out.println("Icon: " + info.getIconPng());
}
});
client.getSession().setFlag(MinecraftConstants.SERVER_PING_TIME_HANDLER_KEY, new ServerPingTimeHandler() {
@Override
public void handle(Session session, long pingTime) {
System.out.println("Server ping took " + pingTime + "ms");
}
});
client.getSession().connect();
while(client.getSession().isConnected()) {
try {
Thread.sleep(5);
} catch(InterruptedException e) {
e.printStackTrace();
}
}
}
private static void login() {
MinecraftProtocol protocol = null;
if(VERIFY_USERS) {
try {
protocol = new MinecraftProtocol(USERNAME, PASSWORD);
System.out.println("Successfully authenticated user.");
} catch(RequestException e) {
e.printStackTrace();
return;
}
} else {
protocol = new MinecraftProtocol(USERNAME);
}
Client client = new Client(HOST, PORT, protocol, new TcpSessionFactory(PROXY));
client.getSession().setFlag(MinecraftConstants.AUTH_PROXY_KEY, AUTH_PROXY);
client.getSession().addListener(new SessionAdapter() {
@Override
public void packetReceived(PacketReceivedEvent event) {
if(event.getPacket() instanceof ServerJoinGamePacket) {
event.getSession().send(new ClientChatPacket("Hello, this is a test of MCProtocolLib."));
} else if(event.getPacket() instanceof ServerChatPacket) {
Message message = event.<ServerChatPacket>getPacket().getMessage();
System.out.println("Received Message: " + message.getFullText());
if(message instanceof TranslationMessage) {
System.out.println("Received Translation Components: " + Arrays.toString(((TranslationMessage) message).getTranslationParams()));
}
// event.getSession().disconnect("Finished");
}
else if (event.getPacket() instanceof ServerChunkDataPacket) {
// This increases probability of crashing
ServerChunkDataPacket data = event.getPacket();
System.out.println("Received message: " + data);
}
}
@Override
public void disconnected(DisconnectedEvent event) {
System.out.println("Disconnected: " + Message.fromString(event.getReason()).getFullText());
if(event.getCause() != null) {
event.getCause().printStackTrace();
}
}
});
client.getSession().connect();
}
}Implementation of client bound packets.
no client bound packets for this state
(Suggestion, im not sure how to add the label)
Im not experienced with go at all, but I suggest getting a good plugin system from the start.
After a little googling I came across this , which might be good.
I tried joining with: 1.8, 1.12.2, 1.16.2, 1.16.3 1.16.4
So when trying to join with a minecraft client(1.8.9) there’s just nothing happening.Propably because of the changes in the protocol since than.But with the versions 1.16.x and 1.20.1 I get following error: „internal exception: io.netty.handler.codec.DecoderException: The recived encoded string bugfer length is longer than maximum allowed (99 > 48)“.After looking trough the code for a bit I couldn’t find anything which could help.So I have two questions:
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