1.2. Просто проверки на работу.

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>net.rubeta</groupId>
     <artifactId>LegacyPing</artifactId>
-    <version>1.1</version>
+    <version>1.2</version>
     <packaging>jar</packaging>
 
     <name>LegacyPing</name>

src/main/java/net/rubeta/legacyping/ServerThread.java

@@ -27,13 +27,27 @@ public class ServerThread extends Thread {
         this.serverSocket.setPerformancePreferences(0, 2, 1);
     }
 
+    public ServerThread(final String host, int port) throws IOException {
+        this.minecraftServer = null;
+        this.setName("LegacyPing thread listening " + host + ":" + port);
+        final InetAddress address = InetAddress.getByName(host);
+        this.serverSocket = new ServerSocket(port, 10, address);
+        this.serverSocket.setSoTimeout((int) TimeUnit.SECONDS.toMillis(10L));
+        this.serverSocket.setPerformancePreferences(0, 2, 1);
+    }
+
+    public static void main(String[] args) throws IOException {
+        new ServerThread("", 25565).start();
+    }
+
     @Override
     public void run() {
         this.working.set(true);
-        while (this.working.get() || !this.serverSocket.isClosed()) {
+        while (this.working.get() && !this.serverSocket.isClosed()) {
             try {
                 final Socket socket = this.serverSocket.accept();
                 socket.setTrafficClass(SocketOptions.TCP_NODELAY & SocketOptions.IP_TOS);
+                System.out.println("[LegacyPing] Got new ping from " + socket.getRemoteSocketAddress());
                 final InputStream inputStream = socket.getInputStream();
                 final OutputStream outputStream = socket.getOutputStream();
                 final int firstByte = inputStream.read();
@@ -49,7 +63,9 @@ public class ServerThread extends Thread {
                 }
                 outputStream.flush();
                 socket.close();
-            } catch (IOException ignore) {
+            } catch (SocketTimeoutException ignore) {
+            } catch (IOException ex) {
+                System.out.println("Exception caught: " + ex);
             }
         }
     }
@@ -66,9 +82,7 @@ public class ServerThread extends Thread {
         final ByteArrayOutputStream result = new ByteArrayOutputStream();
         final DataOutputStream dos = new DataOutputStream(result);
         dos.write(255); // Packet 0xFF (PacketDisconnect)
-        final String response = ((CraftServer) this.minecraftServer).getServer().motd
+        final String response = this.getMotd() + '\u0000' + this.getOnlinePlayers() + '\u0000' + this.getMaxPlayers();
-                + '\u0000' + this.minecraftServer.getOnlinePlayers().length
-                + '\u0000' + this.minecraftServer.getMaxPlayers();
         dos.writeShort(response.length());
         for (char c : response.toCharArray()) {
             dos.writeChar(c);
@@ -83,9 +97,7 @@ public class ServerThread extends Thread {
     private void responseForLegacyPing(final OutputStream outputStream) throws IOException {
         final DataOutputStream clientOutput = new DataOutputStream(outputStream);
         clientOutput.write(255);
-        final String response = ((CraftServer) this.minecraftServer).getServer().motd
+        final String response = this.getMotd() + '\u00a7' + this.getOnlinePlayers() + '\u00a7' + this.getMaxPlayers();
-                + '\u00a7' + this.minecraftServer.getOnlinePlayers().length
-                + '\u00a7' + this.minecraftServer.getMaxPlayers();
         clientOutput.writeShort(response.length());
         for (char c : response.toCharArray()) {
             clientOutput.writeChar(c);
@@ -94,9 +106,9 @@ public class ServerThread extends Thread {
     }
 
     private void responseForModernPing(final OutputStream outputStream) throws IOException {
-        final String responseJson = MODERN_RESPONSE.replace("%max%", String.valueOf(this.minecraftServer.getMaxPlayers()))
+        final String responseJson = MODERN_RESPONSE.replace("%max%", String.valueOf(this.getMaxPlayers()))
-                .replace("%now%", String.valueOf(this.minecraftServer.getOnlinePlayers().length))
+                .replace("%now%", String.valueOf(this.getOnlinePlayers()))
-                .replace("%motd%", ((CraftServer) this.minecraftServer).getServer().motd);
+                .replace("%motd%", this.getMotd());
         byte[] bytes = responseJson.getBytes();
         final DataOutputStream clientOutput = new DataOutputStream(outputStream);
         this.writeVarInt(clientOutput, bytes.length + 3);
@@ -106,6 +118,18 @@ public class ServerThread extends Thread {
         // Packet data end
     }
 
+    private String getMotd() {
+        return this.minecraftServer == null ? "This is an example of the Message of the Day" : ((CraftServer) this.minecraftServer).getServer().motd;
+    }
+
+    private int getOnlinePlayers() {
+        return this.minecraftServer == null ? 13 : this.minecraftServer.getOnlinePlayers().length;
+    }
+
+    private int getMaxPlayers() {
+        return this.minecraftServer == null ? 37 : this.minecraftServer.getMaxPlayers();
+    }
+
     private void writeVarInt(DataOutputStream out, int paramInt) throws IOException {
         while (true) {
             if ((paramInt & 0xFFFFFF80) == 0) {