diff --git a/java_console/io/src/main/java/com/rusefi/io/tcp/BinaryProtocolServer.java b/java_console/io/src/main/java/com/rusefi/io/tcp/BinaryProtocolServer.java
index 15513c0545..49df1ad78a 100644
--- a/java_console/io/src/main/java/com/rusefi/io/tcp/BinaryProtocolServer.java
+++ b/java_console/io/src/main/java/com/rusefi/io/tcp/BinaryProtocolServer.java
@@ -41,7 +41,9 @@ public class BinaryProtocolServer implements BinaryProtocolCommands {
 
     public static final Function<Integer, ServerSocket> PLAIN_SOCKET_FACTORY = port -> {
         try {
-            return new ServerSocket(port);
+            ServerSocket serverSocket = new ServerSocket(port);
+            Logger.CONSOLE.info("ServerSocket " + port + " created");
+            return serverSocket;
         } catch (IOException e) {
             throw new IllegalStateException("Error binding server socket " + port, e);
         }
diff --git a/java_tools/proxy_server/src/main/java/com/rusefi/proxy/BaseBroadcastingThread.java b/java_tools/proxy_server/src/main/java/com/rusefi/proxy/BaseBroadcastingThread.java
index 360d032617..1e28b39392 100644
--- a/java_tools/proxy_server/src/main/java/com/rusefi/proxy/BaseBroadcastingThread.java
+++ b/java_tools/proxy_server/src/main/java/com/rusefi/proxy/BaseBroadcastingThread.java
@@ -37,7 +37,7 @@ public class BaseBroadcastingThread {
 
                     if (command == Fields.TS_HELLO_COMMAND) {
                         // respond on hello request with information about session
-                        logger.info("Sending out " + sessionDetails);
+                        logger.info("Sending to controller connector@proxy: " + sessionDetails);
                         new HelloCommand(logger, sessionDetails.toJson()).handle(stream);
                     } else {
                         handleCommand(packet, stream);
diff --git a/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java b/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java
index 947d4bff13..96104ef1fc 100644
--- a/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java
+++ b/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java
@@ -42,10 +42,10 @@ public class NetworkConnector {
             }
         });
 
-        System.out.println("Connecting to controller...");
+        Logger.CONSOLE.info("Connecting to controller...");
         onConnected.await(1, TimeUnit.MINUTES);
         if (onConnected.getCount() != 0) {
-            System.out.println("Connection to controller failed");
+            Logger.CONSOLE.info("Connection to controller failed");
             return null;
         }
 
diff --git a/java_tools/proxy_server/src/main/java/com/rusefi/server/ControllerConnectionState.java b/java_tools/proxy_server/src/main/java/com/rusefi/server/ControllerConnectionState.java
index 22e771219b..933727c54f 100644
--- a/java_tools/proxy_server/src/main/java/com/rusefi/server/ControllerConnectionState.java
+++ b/java_tools/proxy_server/src/main/java/com/rusefi/server/ControllerConnectionState.java
@@ -7,8 +7,9 @@ import com.rusefi.io.IoStream;
 import com.rusefi.io.commands.GetOutputsCommand;
 import com.rusefi.io.commands.HelloCommand;
 import com.rusefi.io.tcp.TcpIoStream;
+import com.rusefi.shared.FileUtil;
+import net.jcip.annotations.GuardedBy;
 
-import java.io.Closeable;
 import java.io.IOException;
 import java.net.Socket;
 
@@ -29,6 +30,8 @@ public class ControllerConnectionState {
      */
     private UserDetails userDetails;
     private ControllerKey controllerKey;
+    @GuardedBy("this")
+    private boolean isUsed;
 
     public ControllerConnectionState(Socket clientSocket, Logger logger, UserDetailsResolver userDetailsResolver) {
         this.clientSocket = clientSocket;
@@ -56,7 +59,7 @@ public class ControllerConnectionState {
 
     public void close() {
         isClosed = true;
-        close(clientSocket);
+        FileUtil.close(clientSocket);
     }
 
     public void requestControllerInfo() throws IOException {
@@ -85,21 +88,9 @@ public class ControllerConnectionState {
         return sessionDetails;
     }
 
-    private static void close(Closeable closeable) {
-        if (closeable != null) {
-            try {
-                closeable.close();
-            } catch (IOException ignored) {
-                // ignored
-            }
-        }
-    }
-
     public void runEndlessLoop() throws IOException {
-
         while (true) {
             getOutputs();
-
         }
     }
 
@@ -112,4 +103,24 @@ public class ControllerConnectionState {
         if (packet == null)
             throw new IOException("No response");
     }
+
+    /**
+     * @return true if acquired successfully, false if not
+     */
+    public synchronized boolean acquire() {
+        if (isUsed)
+            return false;
+        isUsed = true;
+        return true;
+    }
+
+    public synchronized boolean isUsed() {
+        return isUsed;
+    }
+
+    public synchronized void release() {
+        if (!isUsed)
+            throw new IllegalStateException("Not acquired by anyone");
+        isUsed = false;
+    }
 }