diff --git a/src/zutil/net/mqtt/MqttBroker.java b/src/zutil/net/mqtt/MqttBroker.java
index ad8262f..846ee54 100755
--- a/src/zutil/net/mqtt/MqttBroker.java
+++ b/src/zutil/net/mqtt/MqttBroker.java
@@ -200,6 +200,7 @@ public class MqttBroker extends ThreadedTCPNetworkServer {
         private Socket socket;
         private BinaryStructInputStream in;
         private BinaryStructOutputStream out;
+        private String clientId;
 
         private boolean disconnected = false;
         /** A message that should be sent in case the connection to client is abnormally disconnected */
@@ -217,6 +218,7 @@ public class MqttBroker extends ThreadedTCPNetworkServer {
         public MqttConnectionThread(MqttBroker b, Socket s) throws IOException {
             this(b);
             socket = s;
+            clientId = socket.getInetAddress().toString();
 
             InputStream baseInputstream = socket.getInputStream();
             if (!baseInputstream.markSupported())
@@ -352,7 +354,7 @@ public class MqttBroker extends ThreadedTCPNetworkServer {
 
                 // Close connection
                 default:
-                    logger.warning("[" + socket.getInetAddress() + "] Received unknown packet type: " + packet.type + " (" + packet.getClass() + ")");
+                    logger.warning("[" + clientId + "] Received unknown packet type: " + packet.type + " (" + packet.getClass() + ")");
                     sendWillPacket();
                     /* FALLTHROUGH */
                 case MqttPacketHeader.PACKET_TYPE_DISCONNECT:
@@ -367,7 +369,7 @@ public class MqttBroker extends ThreadedTCPNetworkServer {
             if (publishPacket.getFlagQoS() != 0)
                 throw new UnsupportedOperationException("QoS larger then 0 not supported.");
 
-            logger.finer("[" + socket.getInetAddress() + "] Publishing to topic: " + publishPacket.topicName);
+            logger.finer("[" + clientId + "] Publishing to topic: " + publishPacket.topicName);
             broker.publish(publishPacket.topicName, publishPacket.payload);
         }
 
@@ -376,7 +378,7 @@ public class MqttBroker extends ThreadedTCPNetworkServer {
             subscribeAckPacket.packetId = subscribePacket.packetId;
 
             for (MqttSubscribePayload payload : subscribePacket.payloads) {
-                logger.finer("[" + socket.getInetAddress() + "] Subscribing to topic: " + payload.topicFilter);
+                logger.finer("[" + clientId + "] Subscribing to topic: " + payload.topicFilter);
                 broker.subscribe(payload.topicFilter, this);
 
                 // Prepare response
@@ -390,7 +392,7 @@ public class MqttBroker extends ThreadedTCPNetworkServer {
 
         private void handleUnsubscribe(MqttPacketUnsubscribe unsubscribePacket) throws IOException {
             for (MqttUnsubscribePayload payload : unsubscribePacket.payloads) {
-                logger.finer("[" + socket.getInetAddress() + "] Unsubscribing from topic: " + payload.topicFilter);
+                logger.finer("[" + clientId + "] Unsubscribing from topic: " + payload.topicFilter);
                 broker.unsubscribe(payload.topicFilter, this);
             }
 
@@ -408,7 +410,7 @@ public class MqttBroker extends ThreadedTCPNetworkServer {
 
         private void sendWillPacket() throws IOException {
             if (willPacket != null) {
-                logger.fine("[" + socket.getInetAddress() + "] Publishing will packet.");
+                logger.fine("[" + clientId + "] Publishing will packet.");
                 sendPacket(willPacket);
                 willPacket = null;
             }
diff --git a/src/zutil/parser/json/JSONParser.java b/src/zutil/parser/json/JSONParser.java
index 49ec678..a3fdeff 100755
--- a/src/zutil/parser/json/JSONParser.java
+++ b/src/zutil/parser/json/JSONParser.java
@@ -128,15 +128,19 @@ public class JSONParser extends Parser {
                 }
                 end.i = CONTINUE;
                 break;
-            // Parse String
-            // TODO: Support double backslash escaping
+            // Parse quoted String
             case '\"':
             case '\'':
                 root = new DataNode(DataType.String);
                 StringBuilder str = new StringBuilder();
                 int c2;
-                while ((c2=in.read()) >= 0 && c2 != c)
+                while ((c2=in.read()) >= 0 && c2 != c) {
+                    // Ignore the character check for next char as current char is \ escape
+                    if (c2 == '\\')
+                        c2 = in.read();
+
                     str.append((char) c2);
+                }
                 root.set(str.toString());
                 break;
             // Parse unknown type
@@ -147,7 +151,10 @@ public class JSONParser extends Parser {
                         end.i = END_WITH_VALUE;
                         break;
                     }
-                    tmp.append((char)c);
+                    if (c == '\\')
+                        c = in.read();
+
+                    tmp.append((char) c);
                 }
                 // Check what type of type the data is
                 String data = tmp.toString().trim();
diff --git a/src/zutil/parser/json/JSONWriter.java b/src/zutil/parser/json/JSONWriter.java
index 191e81e..1a11401 100755
--- a/src/zutil/parser/json/JSONWriter.java
+++ b/src/zutil/parser/json/JSONWriter.java
@@ -34,11 +34,11 @@ import java.io.Writer;
 import java.util.Iterator;
 
 /**
- * Writes An JSONNode to an String or stream
+ * Writes An JSONNode to a String or stream
  *
  * @author Ziver
  */
-public class JSONWriter{
+public class JSONWriter {
     private PrintWriter out;
 
     /**
diff --git a/test/zutil/parser/json/JSONParserTest.java b/test/zutil/parser/json/JSONParserTest.java
index 33f242f..9509a56 100755
--- a/test/zutil/parser/json/JSONParserTest.java
+++ b/test/zutil/parser/json/JSONParserTest.java
@@ -92,13 +92,27 @@ public class JSONParserTest {
     }
 
     @Test
-    public void valueStringNoQuotes(){
+    public void valueString(){
         DataNode data = JSONParser.read("teststring");
         assert(data.isValue());
         assertEquals( DataType.String, data.getType());
         assertEquals( "teststring", data.getString());
     }
 
+    @Test
+    public void valueStringWithQuotes(){
+        DataNode data = JSONParser.read("aa \\\"bb\\\" cc");
+
+        assert(data.isValue());
+        assertEquals( DataType.String, data.getType());
+        assertEquals( "aa \"bb\" cc", data.getString());
+
+        data = JSONParser.read("{\"test_key\": \"aa \\\"bb\\\" cc\"}");
+
+        assertEquals( DataType.String, data.get("test_key").getType());
+        assertEquals( "aa \"bb\" cc", data.get("test_key").getString());
+    }
+
     @Test
     public void toManyCommasInList(){
         DataNode data = JSONParser.read("[1,2,3,]");
diff --git a/test/zutil/parser/json/JSONWriterTest.java b/test/zutil/parser/json/JSONWriterTest.java
new file mode 100644
index 0000000..fb95306
--- /dev/null
+++ b/test/zutil/parser/json/JSONWriterTest.java
@@ -0,0 +1,22 @@
+package zutil.parser.json;
+
+import org.junit.Test;
+import zutil.parser.DataNode;
+
+import static org.junit.Assert.*;
+
+public class JSONWriterTest {
+
+    @Test
+    public void emptyNodes() {
+        assertEquals("{}", JSONWriter.toString(new DataNode(DataNode.DataType.Map)));
+        assertEquals("[]", JSONWriter.toString(new DataNode(DataNode.DataType.List)));
+    }
+
+    @Test
+    public void escapeQuotes() {
+        DataNode node = new DataNode(DataNode.DataType.List);
+        node.add("aa \"bb\" cc");
+        assertEquals("[\"aa \\\"bb\\\" cc\"]", JSONWriter.toString(node));
+    }
+}
\ No newline at end of file