node-gamedig/protocols/m2mp.js

class M2mp extends require('./core') {
	constructor() {
		super();
		this.encoding = 'latin1';
	}

	run(state) {
		this.udpSend('M2MP',(buffer) => {
            const reader = this.reader(buffer);

            const header = reader.string({length:4});
			if(header !== 'M2MP') return;
			
			state.name = this.readString(reader);
			state.raw.numplayers = this.readString(reader);
			state.maxplayers = this.readString(reader);
			state.raw.gamemode = this.readString(reader);
			state.password = !!reader.uint(1);
			
			while(!reader.done()) {
                const name = this.readString(reader);
				if(!name) break;
				state.players.push({
					name:name
				});
			}
			
			this.finish(state);
			return true;
		});
	}

	readString(reader) {
		const length = reader.uint(1);
		return reader.string({length:length-1});
	}
}

module.exports = M2mp;