diff --git a/java_console/io/src/main/java/com/rusefi/io/tcp/TcpConnector.java b/java_console/io/src/main/java/com/rusefi/io/tcp/TcpConnector.java
index 94553593db..d9d14640cd 100644
--- a/java_console/io/src/main/java/com/rusefi/io/tcp/TcpConnector.java
+++ b/java_console/io/src/main/java/com/rusefi/io/tcp/TcpConnector.java
@@ -12,7 +12,7 @@ import java.util.Date;
  */
 public class TcpConnector {
     public final static int DEFAULT_PORT = 29001;
-    private static final String LOCALHOST = "localhost";
+    public static final String LOCALHOST = "localhost";
 
     public static boolean isTcpPort(String port) {
         try {
diff --git a/java_console/io/src/test/java/com/rusefi/TestHelper.java b/java_console/io/src/test/java/com/rusefi/TestHelper.java
index 166aa5a863..38d6fa8a19 100644
--- a/java_console/io/src/test/java/com/rusefi/TestHelper.java
+++ b/java_console/io/src/test/java/com/rusefi/TestHelper.java
@@ -11,6 +11,7 @@ import com.rusefi.io.IoStream;
 import com.rusefi.io.LinkConnector;
 import com.rusefi.io.LinkManager;
 import com.rusefi.io.tcp.BinaryProtocolServer;
+import com.rusefi.io.tcp.TcpConnector;
 import com.rusefi.io.tcp.TcpIoStream;
 import com.rusefi.proxy.NetworkConnector;
 import com.rusefi.server.ControllerInfo;
@@ -27,11 +28,11 @@ import java.util.concurrent.TimeUnit;
 
 import static com.devexperts.logging.Logging.getLogging;
 import static com.rusefi.Timeouts.READ_IMAGE_TIMEOUT;
+import static com.rusefi.io.tcp.TcpConnector.LOCALHOST;
 import static org.junit.Assert.assertTrue;
 
 public class TestHelper {
     private static final Logging log = getLogging(TestHelper.class);
-    public static final String LOCALHOST = "localhost";
     public static final String TEST_SIGNATURE_1 = "rusEFI 2020.07.06.frankenso_na6.2468827536";
     public static final String TEST_SIGNATURE_2 = "rusEFI 2020.07.11.proteus_f4.1986715563";
     public static final ControllerInfo CONTROLLER_INFO = new ControllerInfo("name", "make", "code", Fields.TS_SIGNATURE);
@@ -79,7 +80,7 @@ public class TestHelper {
     }
 
     @NotNull
-    public static IoStream connectToLocalhost(int controllerPort, Logger logger) {
+    public static IoStream connectToLocalhost(int controllerPort) {
         IoStream targetEcuSocket;
         try {
             targetEcuSocket = new TcpIoStream("[local]", new Socket(LOCALHOST, controllerPort));
diff --git a/java_console/ui/src/test/java/com/rusefi/BackendTestHelper.java b/java_console/ui/src/test/java/com/rusefi/BackendTestHelper.java
index 5cbe9a430f..9da3197c51 100644
--- a/java_console/ui/src/test/java/com/rusefi/BackendTestHelper.java
+++ b/java_console/ui/src/test/java/com/rusefi/BackendTestHelper.java
@@ -1,6 +1,7 @@
 package com.rusefi;
 
 import com.rusefi.binaryprotocol.BinaryProtocol;
+import com.rusefi.io.tcp.TcpConnector;
 import com.rusefi.server.Backend;
 import com.rusefi.server.UserDetails;
 import com.rusefi.server.UserDetailsResolver;
@@ -41,7 +42,7 @@ public class BackendTestHelper {
     }
 
     public static void commonServerTest() throws MalformedURLException {
-        HttpUtil.RUSEFI_PROXY_HOSTNAME = TestHelper.LOCALHOST;
+        HttpUtil.RUSEFI_PROXY_HOSTNAME = TcpConnector.LOCALHOST;
         BinaryProtocol.DISABLE_LOCAL_CACHE = true;
 
         rusEFISSLContext.init("certificate/test_pkcs12.jks", "password");
diff --git a/java_console/ui/src/test/java/com/rusefi/FullServerTest.java b/java_console/ui/src/test/java/com/rusefi/FullServerTest.java
index 41ee74bb77..73c0a5464c 100644
--- a/java_console/ui/src/test/java/com/rusefi/FullServerTest.java
+++ b/java_console/ui/src/test/java/com/rusefi/FullServerTest.java
@@ -8,6 +8,7 @@ import com.rusefi.config.generated.Fields;
 import com.rusefi.io.ConnectionStateListener;
 import com.rusefi.io.LinkManager;
 import com.rusefi.io.tcp.BinaryProtocolServer;
+import com.rusefi.io.tcp.TcpConnector;
 import com.rusefi.io.tcp.TcpIoStream;
 import com.rusefi.proxy.NetworkConnector;
 import com.rusefi.proxy.NetworkConnectorContext;
@@ -112,7 +113,7 @@ public class FullServerTest {
 
             // start "rusEFI network connector" to connect controller with backend since in real life controller has only local serial port it does not have network
             NetworkConnector.NetworkConnectorResult networkConnectorResult = networkConnector.start(NetworkConnector.Implementation.Unknown,
-                    TestHelper.TEST_TOKEN_1, TestHelper.LOCALHOST + ":" + controllerPort, networkConnectorContext, NetworkConnector.ReconnectListener.VOID);
+                    TestHelper.TEST_TOKEN_1, TcpConnector.LOCALHOST + ":" + controllerPort, networkConnectorContext, NetworkConnector.ReconnectListener.VOID);
             ControllerInfo controllerInfo = networkConnectorResult.getControllerInfo();
 
             TestHelper.assertLatch("controllerRegistered", controllerRegistered);
@@ -133,7 +134,7 @@ public class FullServerTest {
             CountDownLatch connectionEstablishedCountDownLatch = new CountDownLatch(1);
 
             // connect to proxy and read virtual controller through it
-            clientManager.startAndConnect(TestHelper.LOCALHOST + ":" + localApplicationProxyContext.authenticatorPort(), new ConnectionStateListener() {
+            clientManager.startAndConnect(TcpConnector.LOCALHOST + ":" + localApplicationProxyContext.authenticatorPort(), new ConnectionStateListener() {
                 @Override
                 public void onConnectionEstablished() {
                     connectionEstablishedCountDownLatch.countDown();
diff --git a/java_console/ui/src/test/java/com/rusefi/ServerTest.java b/java_console/ui/src/test/java/com/rusefi/ServerTest.java
index 39cf0ef246..e91de4d3d9 100644
--- a/java_console/ui/src/test/java/com/rusefi/ServerTest.java
+++ b/java_console/ui/src/test/java/com/rusefi/ServerTest.java
@@ -5,6 +5,7 @@ import com.rusefi.io.IoStream;
 import com.rusefi.io.commands.GetOutputsCommand;
 import com.rusefi.io.commands.HelloCommand;
 import com.rusefi.io.tcp.BinaryProtocolServer;
+import com.rusefi.io.tcp.TcpConnector;
 import com.rusefi.io.tcp.TcpIoStream;
 import com.rusefi.proxy.BaseBroadcastingThread;
 import com.rusefi.proxy.NetworkConnectorContext;
@@ -22,7 +23,6 @@ import java.net.Socket;
 import java.util.List;
 import java.util.concurrent.CountDownLatch;
 
-import static com.rusefi.TestHelper.LOCALHOST;
 import static com.rusefi.TestHelper.assertLatch;
 import static org.junit.Assert.assertEquals;
 
@@ -84,7 +84,7 @@ public class ServerTest {
             List<ControllerConnectionState> clients = backend.getControllers();
             assertEquals(2, clients.size());
 
-            List<PublicSession> onlineUsers = ProxyClient.getOnlineApplications(HttpUtil.RUSEFI_PROXY_JSON_PROTOCOL + TestHelper.LOCALHOST + ":" + httpPort + ProxyClient.LIST_CONTROLLERS_PATH);
+            List<PublicSession> onlineUsers = ProxyClient.getOnlineApplications(HttpUtil.RUSEFI_PROXY_JSON_PROTOCOL + TcpConnector.LOCALHOST + ":" + httpPort + ProxyClient.LIST_CONTROLLERS_PATH);
             assertEquals(2, onlineUsers.size());
 
             allConnected.countDown();
@@ -195,7 +195,7 @@ covered by FullServerTest
         }
 
         public void connect(int serverPort) throws IOException {
-            Socket socket = rusEFISSLContext.getSSLSocket(LOCALHOST, serverPort);
+            Socket socket = rusEFISSLContext.getSSLSocket(TcpConnector.LOCALHOST, serverPort);
             BaseBroadcastingThread baseBroadcastingThread = new BaseBroadcastingThread(socket,
                     sessionDetails,
                     TcpIoStream.DisconnectListener.VOID, new NetworkConnectorContext()) {
diff --git a/java_console/ui/src/test/java/com/rusefi/io/TcpCommunicationIntegrationTest.java b/java_console/ui/src/test/java/com/rusefi/io/TcpCommunicationIntegrationTest.java
index 75ec22f902..9fed2d773a 100644
--- a/java_console/ui/src/test/java/com/rusefi/io/TcpCommunicationIntegrationTest.java
+++ b/java_console/ui/src/test/java/com/rusefi/io/TcpCommunicationIntegrationTest.java
@@ -8,6 +8,7 @@ import com.rusefi.binaryprotocol.BinaryProtocol;
 import com.rusefi.config.generated.Fields;
 import com.rusefi.io.tcp.BinaryProtocolProxy;
 import com.rusefi.io.tcp.BinaryProtocolServer;
+import com.rusefi.io.tcp.TcpConnector;
 import org.junit.Test;
 
 import java.io.IOException;
@@ -59,7 +60,7 @@ public class TcpCommunicationIntegrationTest {
         // todo: remove CONFIGURATION_RUSEFI_BINARY or nicer API to disable local file load
 
         LinkManager clientManager = new LinkManager();
-        clientManager.startAndConnect(TestHelper.LOCALHOST + ":" + port, new ConnectionStateListener() {
+        clientManager.startAndConnect(TcpConnector.LOCALHOST + ":" + port, new ConnectionStateListener() {
             @Override
             public void onConnectionEstablished() {
                 connectionEstablishedCountDownLatch.countDown();
@@ -94,7 +95,7 @@ public class TcpCommunicationIntegrationTest {
 
 
         // connect proxy to virtual controller
-        IoStream targetEcuSocket = TestHelper.connectToLocalhost(controllerPort, LOGGER);
+        IoStream targetEcuSocket = TestHelper.connectToLocalhost(controllerPort);
         final AtomicInteger relayCommandCounter = new AtomicInteger();
         BinaryProtocolProxy.createProxy(targetEcuSocket, proxyPort, () -> relayCommandCounter.incrementAndGet());
 
@@ -102,7 +103,7 @@ public class TcpCommunicationIntegrationTest {
 
         // connect to proxy and read virtual controller through it
         LinkManager clientManager = new LinkManager();
-        clientManager.startAndConnect(TestHelper.LOCALHOST + ":" + proxyPort, new ConnectionStateListener() {
+        clientManager.startAndConnect(TcpConnector.LOCALHOST + ":" + proxyPort, new ConnectionStateListener() {
             @Override
             public void onConnectionEstablished() {
                 connectionEstablishedCountDownLatch.countDown();
diff --git a/java_console/ui/src/test/java/com/rusefi/proxy/NetworkConnectorTest.java b/java_console/ui/src/test/java/com/rusefi/proxy/NetworkConnectorTest.java
index 573edd7a59..164c263bb5 100644
--- a/java_console/ui/src/test/java/com/rusefi/proxy/NetworkConnectorTest.java
+++ b/java_console/ui/src/test/java/com/rusefi/proxy/NetworkConnectorTest.java
@@ -7,6 +7,7 @@ import com.rusefi.TestHelper;
 import com.rusefi.Timeouts;
 import com.rusefi.config.generated.Fields;
 import com.rusefi.io.tcp.BinaryProtocolServer;
+import com.rusefi.io.tcp.TcpConnector;
 import com.rusefi.server.Backend;
 import com.rusefi.server.ControllerConnectionState;
 import org.junit.Before;
@@ -76,7 +77,7 @@ public class NetworkConnectorTest {
             }
         };
         NetworkConnector networkConnector = new NetworkConnector();
-        networkConnector.start(NetworkConnector.Implementation.Unknown, TestHelper.TEST_TOKEN_1, TestHelper.LOCALHOST + ":" + controllerPort, connectorContext, reconnectListener);
+        networkConnector.start(NetworkConnector.Implementation.Unknown, TestHelper.TEST_TOKEN_1, TcpConnector.LOCALHOST + ":" + controllerPort, connectorContext, reconnectListener);
 
         assertLatch(reconnectCounter);
 
diff --git a/java_console/ui/src/test/java/com/rusefi/proxy/client/LocalApplicationProxyTest.java b/java_console/ui/src/test/java/com/rusefi/proxy/client/LocalApplicationProxyTest.java
index f61937efed..6bea9bc3fe 100644
--- a/java_console/ui/src/test/java/com/rusefi/proxy/client/LocalApplicationProxyTest.java
+++ b/java_console/ui/src/test/java/com/rusefi/proxy/client/LocalApplicationProxyTest.java
@@ -31,6 +31,7 @@ import static com.rusefi.binaryprotocol.BinaryProtocol.findCommand;
 import static com.rusefi.binaryprotocol.BinaryProtocol.sleep;
 import static com.rusefi.config.generated.Fields.TS_PROTOCOL;
 import static com.rusefi.io.tcp.BinaryProtocolServer.getPacketLength;
+import static com.rusefi.io.tcp.TcpConnector.LOCALHOST;
 import static com.rusefi.shared.FileUtil.close;
 import static org.junit.Assert.*;