Add DedicatedServerConnectionThread from mc-dev for diff visibility.

src/main/java/net/minecraft/server/DedicatedServerConnectionThread.java

@@ -0,0 +1,119 @@
+package net.minecraft.server;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class DedicatedServerConnectionThread extends Thread {
+
+    private static Logger a = Logger.getLogger("Minecraft");
+    private final List b = Collections.synchronizedList(new ArrayList());
+    private final HashMap c = new HashMap();
+    private int d = 0;
+    private final ServerSocket e;
+    private ServerConnection f;
+    private final InetAddress g;
+    private final int h;
+
+    public DedicatedServerConnectionThread(ServerConnection serverconnection, InetAddress inetaddress, int i) {
+        super("Listen thread");
+        this.f = serverconnection;
+        this.g = inetaddress;
+        this.h = i;
+        this.e = new ServerSocket(i, 0, inetaddress);
+        this.e.setPerformancePreferences(0, 2, 1);
+    }
+
+    public void a() {
+        List list = this.b;
+
+        synchronized (this.b) {
+            for (int i = 0; i < this.b.size(); ++i) {
+                NetLoginHandler netloginhandler = (NetLoginHandler) this.b.get(i);
+
+                try {
+                    netloginhandler.c();
+                } catch (Exception exception) {
+                    netloginhandler.disconnect("Internal server error");
+                    a.log(Level.WARNING, "Failed to handle packet: " + exception, exception);
+                }
+
+                if (netloginhandler.c) {
+                    this.b.remove(i--);
+                }
+
+                netloginhandler.networkManager.a();
+            }
+        }
+    }
+
+    public void run() {
+        while (this.f.b) {
+            try {
+                Socket socket = this.e.accept();
+                InetAddress inetaddress = socket.getInetAddress();
+                long i = System.currentTimeMillis();
+                HashMap hashmap = this.c;
+
+                synchronized (this.c) {
+                    if (this.c.containsKey(inetaddress) && !b(inetaddress) && i - ((Long) this.c.get(inetaddress)).longValue() < 4000L) {
+                        this.c.put(inetaddress, Long.valueOf(i));
+                        socket.close();
+                        continue;
+                    }
+
+                    this.c.put(inetaddress, Long.valueOf(i));
+                }
+
+                NetLoginHandler netloginhandler = new NetLoginHandler(this.f.d(), socket, "Connection #" + this.d++);
+
+                this.a(netloginhandler);
+            } catch (IOException ioexception) {
+                ioexception.printStackTrace();
+            }
+        }
+
+        System.out.println("Closing listening thread");
+    }
+
+    private void a(NetLoginHandler netloginhandler) {
+        if (netloginhandler == null) {
+            throw new IllegalArgumentException("Got null pendingconnection!");
+        } else {
+            List list = this.b;
+
+            synchronized (this.b) {
+                this.b.add(netloginhandler);
+            }
+        }
+    }
+
+    private static boolean b(InetAddress inetaddress) {
+        return "127.0.0.1".equals(inetaddress.getHostAddress());
+    }
+
+    public void a(InetAddress inetaddress) {
+        if (inetaddress != null) {
+            HashMap hashmap = this.c;
+
+            synchronized (this.c) {
+                this.c.remove(inetaddress);
+            }
+        }
+    }
+
+    public void b() {
+        try {
+            this.e.close();
+        } catch (Throwable throwable) {
+            ;
+        }
+    }
+}