TheAPI - Sockets - Spigot/Bungee bridge

//Spigot listener - Lobby

import java.util.Map;
import java.util.Map.Entry;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;

import me.devtec.theapi.TheAPI;
import me.devtec.theapi.apis.PluginManagerAPI;
import me.devtec.theapi.placeholderapi.ThePlaceholder;
import me.devtec.theapi.placeholderapi.ThePlaceholderAPI;
import me.devtec.theapi.sockets.Client;
import me.devtec.theapi.sockets.ClientHandler;
import me.devtec.theapi.sockets.Reader;
import me.devtec.theapi.utils.StringUtils;
import me.devtec.theapi.utils.datakeeper.Data;
import me.devtec.theapi.utils.datakeeper.DataType;
import me.devtec.theapi.utils.datakeeper.maps.UnsortedMap;

public void onEnable() {
    Map<String, Integer> online = new UnsortedMap<>();
    Client bungee = TheAPI.getSocketClient("Bungee");

    Data data = new Data();
    data.set("online-mode", Bukkit.getOnlineMode());
    data.set("max-players", Bukkit.getMaxPlayers());
    data.set("theapi-version", PluginManagerAPI.getVersion("TheAPI"));
    data.set("super-duper-cool-info-here", "Straiker is cool");

    //Send info to Bungee
    bungee.write("some-unused-info:"+data.toString(DataType.BYTE));
    bungee.write("req-server-info:survival");
    bungee.write("req-server-info:creative");

    //Listening Bungee
    TheAPI.getSocketServer().register(new Reader() {
        public void read(ClientHandler a, String b) {
            if(a.getUser().equals("Bungee")) {
                if(b.startsWith("req-server-info:")) {
                    b=b.replaceFirst("req\\-server\\-info:", "");
                    String server = b.split(":")[0];
                    online.put(server, StringUtils.getInt(b.replaceFirst(server+":", "")));
                }
            }
        }
    });

    //Server placeholders
    ThePlaceholderAPI.register(new ThePlaceholder("bungee-info") {
        public String onRequest(Player player, String placeholder) {
            for(Entry<String, Integer> e : online.entrySet())
                if(placeholder.equals("bungee_server_"+e.getKey()))
                    return e.getValue()+"";
            return null;
        }
    });

    //Example: %theapi_{bungee_server_survival}%
}

//Bungee listener

import me.devtec.bungeetheapi.TheAPI;
import me.devtec.bungeetheapi.sockets.Client;
import me.devtec.bungeetheapi.sockets.ClientHandler;
import me.devtec.bungeetheapi.sockets.Reader;
import me.devtec.bungeetheapi.utils.datakeeper.Data;
import net.md_5.bungee.BungeeCord;

public void onEnable() {
    Client lobby = TheAPI.getSocketClient("Lobby");

    //Listenning lobby..
    TheAPI.getSocketServer().register(new Reader() {
        public void read(ClientHandler a, String b) {
            if(a.getUser().equals("Lobby")) {
                if(b.startsWith("some-unused-info:")) {
                    b=b.replaceFirst("some\\-unused\\-info:", "");
                    Data data = new Data();
                    data.reload(b);
                    //Something with data here..
                    //...
                    //...
                    return;
                }
                if(b.startsWith("req-server-info:")) {
                    b=b.replaceFirst("req\\-server\\-info:", "");
                    String server = b.split(":")[0];
                    lobby.write(BungeeCord.getInstance().getServerInfo(server).getPlayers().size()+"");
                }
            }
        }
    });
}