Merge pull request #3921 from Abyss777/netty4_tz-tl

Migrate part of T protocols

31 files changed, 200 insertions, 206 deletions

diff --git a/src/org/traccar/protocol/TelicFrameDecoder.java b/src/org/traccar/protocol/TelicFrameDecoder.java
index 245be28fb..b99ef98bf 100644
--- a/src/org/traccar/protocol/TelicFrameDecoder.java
+++ b/src/org/traccar/protocol/TelicFrameDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,32 +15,33 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.channel.Channel;
-import org.jboss.netty.channel.ChannelHandlerContext;
-import org.jboss.netty.handler.codec.frame.FrameDecoder;
+import org.traccar.BaseFrameDecoder;
 
-public class TelicFrameDecoder extends FrameDecoder {
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+
+public class TelicFrameDecoder extends BaseFrameDecoder {
 
     @Override
     protected Object decode(
-            ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
 
         if (buf.readableBytes() < 4) {
             return null;
         }
 
-        long length = buf.getUnsignedInt(buf.readerIndex());
+        long length = buf.getUnsignedIntLE(buf.readerIndex());
 
         if (length < 1024) {
             if (buf.readableBytes() >= length + 4) {
-                buf.readUnsignedInt();
+                buf.readUnsignedIntLE();
                 return buf.readBytes((int) length);
             }
         } else {
             int endIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) 0);
             if (endIndex >= 0) {
-                ChannelBuffer frame = buf.readBytes(endIndex - buf.readerIndex());
+                ByteBuf frame = buf.readBytes(endIndex - buf.readerIndex());
                 buf.readByte();
                 if (frame.readableBytes() > 0) {
                     return frame;
diff --git a/src/org/traccar/protocol/TelicProtocol.java b/src/org/traccar/protocol/TelicProtocol.java
index fdd0b94c6..0ee4cf165 100644
--- a/src/org/traccar/protocol/TelicProtocol.java
+++ b/src/org/traccar/protocol/TelicProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,14 +15,12 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
-import java.nio.ByteOrder;
 import java.util.List;
 
 public class TelicProtocol extends BaseProtocol {
@@ -33,17 +31,15 @@ public class TelicProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        TrackerServer server = new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new TelicFrameDecoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("objectDecoder", new TelicProtocolDecoder(TelicProtocol.this));
             }
-        };
-        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
-        serverList.add(server);
+        });
     }
 
 }
diff --git a/src/org/traccar/protocol/TelicProtocolDecoder.java b/src/org/traccar/protocol/TelicProtocolDecoder.java
index 197db059b..3a9962361 100644
--- a/src/org/traccar/protocol/TelicProtocolDecoder.java
+++ b/src/org/traccar/protocol/TelicProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 - 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2014 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.Parser;
diff --git a/src/org/traccar/protocol/Tlt2hProtocol.java b/src/org/traccar/protocol/Tlt2hProtocol.java
index 752b0d8ef..1a23dee40 100644
--- a/src/org/traccar/protocol/Tlt2hProtocol.java
+++ b/src/org/traccar/protocol/Tlt2hProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
 import org.traccar.CharacterDelimiterFrameDecoder;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,9 +32,9 @@ public class Tlt2hProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new CharacterDelimiterFrameDecoder(32 * 1024, "##\r\n"));
                 pipeline.addLast("stringDecoder", new StringDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
diff --git a/src/org/traccar/protocol/Tlt2hProtocolDecoder.java b/src/org/traccar/protocol/Tlt2hProtocolDecoder.java
index a5a195afa..780785247 100644
--- a/src/org/traccar/protocol/Tlt2hProtocolDecoder.java
+++ b/src/org/traccar/protocol/Tlt2hProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 - 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2013 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.DateBuilder;
diff --git a/src/org/traccar/protocol/TlvProtocol.java b/src/org/traccar/protocol/TlvProtocol.java
index da8d88b8a..ddc8d2a6e 100644
--- a/src/org/traccar/protocol/TlvProtocol.java
+++ b/src/org/traccar/protocol/TlvProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,10 +15,9 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
 import org.traccar.BaseProtocol;
 import org.traccar.CharacterDelimiterFrameDecoder;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -31,9 +30,9 @@ public class TlvProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new CharacterDelimiterFrameDecoder('\0'));
                 pipeline.addLast("objectDecoder", new TlvProtocolDecoder(TlvProtocol.this));
             }
diff --git a/src/org/traccar/protocol/TlvProtocolDecoder.java b/src/org/traccar/protocol/TlvProtocolDecoder.java
index 0cf68acb8..ae1a3346a 100644
--- a/src/org/traccar/protocol/TlvProtocolDecoder.java
+++ b/src/org/traccar/protocol/TlvProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,11 +15,12 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBuffers;
-import org.jboss.netty.channel.Channel;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
 
@@ -33,20 +34,20 @@ public class TlvProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private void sendResponse(Channel channel, String type, String... arguments) {
+    private void sendResponse(Channel channel, SocketAddress remoteAddress, String type, String... arguments) {
         if (channel != null) {
-            ChannelBuffer response = ChannelBuffers.dynamicBuffer();
-            response.writeBytes(ChannelBuffers.copiedBuffer(type, StandardCharsets.US_ASCII));
+            ByteBuf response = Unpooled.buffer();
+            response.writeBytes(Unpooled.copiedBuffer(type, StandardCharsets.US_ASCII));
             for (String argument : arguments) {
                 response.writeByte(argument.length());
-                response.writeBytes(ChannelBuffers.copiedBuffer(argument, StandardCharsets.US_ASCII));
+                response.writeBytes(Unpooled.copiedBuffer(argument, StandardCharsets.US_ASCII));
             }
             response.writeByte(0);
-            channel.write(response);
+            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
         }
     }
 
-    private String readArgument(ChannelBuffer buf) {
+    private String readArgument(ByteBuf buf) {
         return buf.readBytes(buf.readUnsignedByte()).toString(StandardCharsets.US_ASCII);
     }
 
@@ -54,7 +55,7 @@ public class TlvProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         String type = buf.readBytes(2).toString(StandardCharsets.US_ASCII);
 
@@ -62,14 +63,14 @@ public class TlvProtocolDecoder extends BaseProtocolDecoder {
             switch (type) {
                 case "0A":
                 case "0C":
-                    sendResponse(channel, type);
+                    sendResponse(channel, remoteAddress, type);
                     break;
                 case "0B":
-                    sendResponse(channel, type, "1482202689", "10", "20", "15");
+                    sendResponse(channel, remoteAddress, type, "1482202689", "10", "20", "15");
                     break;
                 case "0E":
                 case "0F":
-                    sendResponse(channel, type, "30", "Unknown");
+                    sendResponse(channel, remoteAddress, type, "30", "Unknown");
                     break;
                 default:
                     break;
diff --git a/src/org/traccar/protocol/TmgFrameDecoder.java b/src/org/traccar/protocol/TmgFrameDecoder.java
index c39cf03ac..a2039ff52 100644
--- a/src/org/traccar/protocol/TmgFrameDecoder.java
+++ b/src/org/traccar/protocol/TmgFrameDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,34 +15,37 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBufferIndexFinder;
-import org.jboss.netty.channel.Channel;
-import org.jboss.netty.channel.ChannelHandlerContext;
-import org.jboss.netty.handler.codec.frame.FrameDecoder;
+import org.traccar.BaseFrameDecoder;
 
-public class TmgFrameDecoder extends FrameDecoder {
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+
+public class TmgFrameDecoder extends BaseFrameDecoder {
 
     private boolean isLetter(byte c) {
         return c >= 'a' && c <= 'z';
     }
 
-    @Override
-    protected Object decode(
-            ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
-
-        int beginIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), new ChannelBufferIndexFinder() {
-            @Override
-            public boolean find(ChannelBuffer buffer, int guessedIndex) {
-                if (buffer.getByte(guessedIndex) != (byte) '$' || buffer.writerIndex() - guessedIndex < 5) {
-                    return false;
-                }
-                return buffer.getByte(guessedIndex + 4) == ','
+    private int findHeader(ByteBuf buffer) {
+        int guessedIndex = buffer.indexOf(buffer.readerIndex(), buffer.writerIndex(), (byte) '$');
+        while (guessedIndex != -1 && buffer.writerIndex() - guessedIndex >= 5) {
+            if (buffer.getByte(guessedIndex + 4) == ','
                         && isLetter(buffer.getByte(guessedIndex + 1))
                         && isLetter(buffer.getByte(guessedIndex + 2))
-                        && isLetter(buffer.getByte(guessedIndex + 3));
+                        && isLetter(buffer.getByte(guessedIndex + 3))) {
+                return guessedIndex;
             }
-        });
+            guessedIndex = buffer.indexOf(guessedIndex, buffer.writerIndex(), (byte) '$');
+        }
+        return -1;
+    }
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        int beginIndex = findHeader(buf);
 
         if (beginIndex >= 0) {
 
@@ -51,7 +54,7 @@ public class TmgFrameDecoder extends FrameDecoder {
             int endIndex = buf.indexOf(beginIndex, buf.writerIndex(), (byte) '\n');
 
             if (endIndex >= 0) {
-                ChannelBuffer frame = buf.readBytes(endIndex - beginIndex);
+                ByteBuf frame = buf.readBytes(endIndex - beginIndex);
                 buf.readByte(); // delimiter
                 return frame;
             }
diff --git a/src/org/traccar/protocol/TmgProtocol.java b/src/org/traccar/protocol/TmgProtocol.java
index c11762cac..192891100 100644
--- a/src/org/traccar/protocol/TmgProtocol.java
+++ b/src/org/traccar/protocol/TmgProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,11 +15,10 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -32,9 +31,9 @@ public class TmgProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new TmgFrameDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/TmgProtocolDecoder.java b/src/org/traccar/protocol/TmgProtocolDecoder.java
index cb10eedd7..7ac443d5c 100644
--- a/src/org/traccar/protocol/TmgProtocolDecoder.java
+++ b/src/org/traccar/protocol/TmgProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.BitUtil;
diff --git a/src/org/traccar/protocol/TopflytechProtocol.java b/src/org/traccar/protocol/TopflytechProtocol.java
index 7d4b13ee6..03eb4b3ea 100644
--- a/src/org/traccar/protocol/TopflytechProtocol.java
+++ b/src/org/traccar/protocol/TopflytechProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
 import org.traccar.CharacterDelimiterFrameDecoder;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,9 +32,9 @@ public class TopflytechProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new CharacterDelimiterFrameDecoder(1024, ')'));
                 pipeline.addLast("stringDecoder", new StringDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
diff --git a/src/org/traccar/protocol/TopflytechProtocolDecoder.java b/src/org/traccar/protocol/TopflytechProtocolDecoder.java
index b3a8fa845..4ce161b1c 100644
--- a/src/org/traccar/protocol/TopflytechProtocolDecoder.java
+++ b/src/org/traccar/protocol/TopflytechProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 - 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2013 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.Parser;
diff --git a/src/org/traccar/protocol/TotemFrameDecoder.java b/src/org/traccar/protocol/TotemFrameDecoder.java
index 70dc5db3b..a7e134c09 100644
--- a/src/org/traccar/protocol/TotemFrameDecoder.java
+++ b/src/org/traccar/protocol/TotemFrameDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 - 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2013 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,25 +15,26 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.channel.Channel;
-import org.jboss.netty.channel.ChannelHandlerContext;
-import org.jboss.netty.handler.codec.frame.FrameDecoder;
-import org.traccar.helper.StringFinder;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
 
 import java.nio.charset.StandardCharsets;
 
-public class TotemFrameDecoder extends FrameDecoder {
+import org.traccar.BaseFrameDecoder;
+import org.traccar.helper.BufferUtil;
+
+public class TotemFrameDecoder extends BaseFrameDecoder {
 
     @Override
     protected Object decode(
-            ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
 
         if (buf.readableBytes() < 10) {
             return null;
         }
 
-        int beginIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), new StringFinder("$$"));
+        int beginIndex = BufferUtil.indexOf("$$", buf);
         if (beginIndex == -1) {
             return null;
         } else if (beginIndex > buf.readerIndex()) {
diff --git a/src/org/traccar/protocol/TotemProtocol.java b/src/org/traccar/protocol/TotemProtocol.java
index 1c5cf5b02..c533268cc 100644
--- a/src/org/traccar/protocol/TotemProtocol.java
+++ b/src/org/traccar/protocol/TotemProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,11 +15,10 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 import org.traccar.model.Command;
 
@@ -37,9 +36,9 @@ public class TotemProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new TotemFrameDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/TotemProtocolDecoder.java b/src/org/traccar/protocol/TotemProtocolDecoder.java
index c200129d2..c1ee8bf20 100644
--- a/src/org/traccar/protocol/TotemProtocolDecoder.java
+++ b/src/org/traccar/protocol/TotemProtocolDecoder.java
@@ -15,9 +15,10 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.helper.BitUtil;
 import org.traccar.helper.Checksum;
 import org.traccar.helper.DateBuilder;
@@ -411,9 +412,9 @@ public class TotemProtocolDecoder extends BaseProtocolDecoder {
             if (pattern == PATTERN4) {
                 String response = "$$0014AA" + sentence.substring(sentence.length() - 6, sentence.length() - 2);
                 response += String.format("%02X", Checksum.xor(response)).toUpperCase();
-                channel.write(response);
+                channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
             } else {
-                channel.write("ACK OK\r\n");
+                channel.writeAndFlush(new NetworkMessage("ACK OK\r\n", remoteAddress));
             }
         }
 
diff --git a/src/org/traccar/protocol/Tr20Protocol.java b/src/org/traccar/protocol/Tr20Protocol.java
index 8de004be9..629d8b961 100644
--- a/src/org/traccar/protocol/Tr20Protocol.java
+++ b/src/org/traccar/protocol/Tr20Protocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.frame.LineBasedFrameDecoder;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.LineBasedFrameDecoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,9 +32,9 @@ public class Tr20Protocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(1024));
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/Tr20ProtocolDecoder.java b/src/org/traccar/protocol/Tr20ProtocolDecoder.java
index 579d575b0..1e3f8e8b2 100644
--- a/src/org/traccar/protocol/Tr20ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Tr20ProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 - 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2012 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.Parser;
diff --git a/src/org/traccar/protocol/Tr900Protocol.java b/src/org/traccar/protocol/Tr900Protocol.java
index 40f287efa..80ad76087 100644
--- a/src/org/traccar/protocol/Tr900Protocol.java
+++ b/src/org/traccar/protocol/Tr900Protocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,13 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ConnectionlessBootstrap;
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.frame.LineBasedFrameDecoder;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.LineBasedFrameDecoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -34,18 +32,18 @@ public class Tr900Protocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(1024));
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
                 pipeline.addLast("objectDecoder", new Tr900ProtocolDecoder(Tr900Protocol.this));
             }
         });
-        serverList.add(new TrackerServer(new ConnectionlessBootstrap(), getName()) {
+        serverList.add(new TrackerServer(true, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
                 pipeline.addLast("objectDecoder", new Tr900ProtocolDecoder(Tr900Protocol.this));
diff --git a/src/org/traccar/protocol/Tr900ProtocolDecoder.java b/src/org/traccar/protocol/Tr900ProtocolDecoder.java
index 0ce4158e4..8200884ac 100644
--- a/src/org/traccar/protocol/Tr900ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Tr900ProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 -2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.Parser;
diff --git a/src/org/traccar/protocol/TrackboxProtocol.java b/src/org/traccar/protocol/TrackboxProtocol.java
index c1aa5ac6a..c86870aec 100644
--- a/src/org/traccar/protocol/TrackboxProtocol.java
+++ b/src/org/traccar/protocol/TrackboxProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.frame.LineBasedFrameDecoder;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.LineBasedFrameDecoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,9 +32,9 @@ public class TrackboxProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(1024));
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/TrackboxProtocolDecoder.java b/src/org/traccar/protocol/TrackboxProtocolDecoder.java
index 2c113fb76..fff60ae70 100644
--- a/src/org/traccar/protocol/TrackboxProtocolDecoder.java
+++ b/src/org/traccar/protocol/TrackboxProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 - 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2014 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,9 +15,10 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
@@ -46,9 +47,9 @@ public class TrackboxProtocolDecoder extends BaseProtocolDecoder {
             .number("(d+)")                      // satellites
             .compile();
 
-    private void sendResponse(Channel channel) {
+    private void sendResponse(Channel channel, SocketAddress remoteAddress) {
         if (channel != null) {
-            channel.write("=OK=\r\n");
+            channel.writeAndFlush(new NetworkMessage("=OK=\r\n", remoteAddress));
         }
     }
 
@@ -61,7 +62,7 @@ public class TrackboxProtocolDecoder extends BaseProtocolDecoder {
         if (sentence.startsWith("a=connect")) {
             String id = sentence.substring(sentence.indexOf("i=") + 2);
             if (getDeviceSession(channel, remoteAddress, id) != null) {
-                sendResponse(channel);
+                sendResponse(channel, remoteAddress);
             }
             return null;
         }
@@ -75,7 +76,7 @@ public class TrackboxProtocolDecoder extends BaseProtocolDecoder {
         if (!parser.matches()) {
             return null;
         }
-        sendResponse(channel);
+        sendResponse(channel, remoteAddress);
 
         Position position = new Position(getProtocolName());
         position.setDeviceId(deviceSession.getDeviceId());
diff --git a/src/org/traccar/protocol/TrakMateProtocol.java b/src/org/traccar/protocol/TrakMateProtocol.java
index f6d9bf457..506408d65 100644
--- a/src/org/traccar/protocol/TrakMateProtocol.java
+++ b/src/org/traccar/protocol/TrakMateProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
 import org.traccar.CharacterDelimiterFrameDecoder;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,9 +32,9 @@ public class TrakMateProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new CharacterDelimiterFrameDecoder(1024, '#'));
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/TrakMateProtocolDecoder.java b/src/org/traccar/protocol/TrakMateProtocolDecoder.java
index 293c13fad..9fd7af542 100644
--- a/src/org/traccar/protocol/TrakMateProtocolDecoder.java
+++ b/src/org/traccar/protocol/TrakMateProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 - 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.Parser;
diff --git a/src/org/traccar/protocol/TrvProtocol.java b/src/org/traccar/protocol/TrvProtocol.java
index 348ccd92a..7167ab674 100644
--- a/src/org/traccar/protocol/TrvProtocol.java
+++ b/src/org/traccar/protocol/TrvProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
 import org.traccar.CharacterDelimiterFrameDecoder;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,9 +32,9 @@ public class TrvProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new CharacterDelimiterFrameDecoder(1024, '#'));
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/TrvProtocolDecoder.java b/src/org/traccar/protocol/TrvProtocolDecoder.java
index e0cebc9a5..9c4968974 100644
--- a/src/org/traccar/protocol/TrvProtocolDecoder.java
+++ b/src/org/traccar/protocol/TrvProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,9 +15,10 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
@@ -119,11 +120,11 @@ public class TrvProtocolDecoder extends BaseProtocolDecoder {
             String responseHeader = id + (char) (type.charAt(0) + 1) + type.substring(1);
             if (type.equals("AP00") && id.equals("IW")) {
                 String time = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
-                channel.write(responseHeader + "," + time + ",0#");
+                channel.writeAndFlush(new NetworkMessage(responseHeader + "," + time + ",0#", remoteAddress));
             } else if (type.equals("AP14")) {
-                channel.write(responseHeader + ",0.000,0.000#");
+                channel.writeAndFlush(new NetworkMessage(responseHeader + ",0.000,0.000#", remoteAddress));
             } else {
-                channel.write(responseHeader + "#");
+                channel.writeAndFlush(new NetworkMessage(responseHeader + "#", remoteAddress));
             }
         }
 
diff --git a/src/org/traccar/protocol/Tt8850Protocol.java b/src/org/traccar/protocol/Tt8850Protocol.java
index 79dc031bc..7d3c6a437 100644
--- a/src/org/traccar/protocol/Tt8850Protocol.java
+++ b/src/org/traccar/protocol/Tt8850Protocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,11 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
 import org.traccar.CharacterDelimiterFrameDecoder;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,9 +32,9 @@ public class Tt8850Protocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new CharacterDelimiterFrameDecoder(1024, "$"));
                 pipeline.addLast("stringDecoder", new StringDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
diff --git a/src/org/traccar/protocol/Tt8850ProtocolDecoder.java b/src/org/traccar/protocol/Tt8850ProtocolDecoder.java
index 0134f4764..46220e143 100644
--- a/src/org/traccar/protocol/Tt8850ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Tt8850ProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,7 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.channel.Channel;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.Parser;
diff --git a/src/org/traccar/protocol/TytanProtocol.java b/src/org/traccar/protocol/TytanProtocol.java
index 0c27fb12b..7c424981b 100644
--- a/src/org/traccar/protocol/TytanProtocol.java
+++ b/src/org/traccar/protocol/TytanProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,9 +15,8 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ConnectionlessBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -30,9 +29,9 @@ public class TytanProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ConnectionlessBootstrap(), getName()) {
+        serverList.add(new TrackerServer(true, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("objectDecoder", new TytanProtocolDecoder(TytanProtocol.this));
             }
         });
diff --git a/src/org/traccar/protocol/TytanProtocolDecoder.java b/src/org/traccar/protocol/TytanProtocolDecoder.java
index a65ad4cfc..221df6081 100644
--- a/src/org/traccar/protocol/TytanProtocolDecoder.java
+++ b/src/org/traccar/protocol/TytanProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,11 +15,13 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBuffers;
-import org.jboss.netty.channel.Channel;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.helper.BitUtil;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
@@ -36,7 +38,7 @@ public class TytanProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private void decodeExtraData(Position position, ChannelBuffer buf, int end) {
+    private void decodeExtraData(Position position, ByteBuf buf, int end) {
         while (buf.readerIndex() < end) {
 
             int type = buf.readUnsignedByte();
@@ -73,10 +75,10 @@ public class TytanProtocolDecoder extends BaseProtocolDecoder {
                     position.set("antihijack", buf.readUnsignedByte());
                     break;
                 case 9:
-                    position.set("unauthorized", ChannelBuffers.hexDump(buf.readBytes(8)));
+                    position.set("unauthorized", ByteBufUtil.hexDump(buf.readBytes(8)));
                     break;
                 case 10:
-                    position.set("authorized", ChannelBuffers.hexDump(buf.readBytes(8)));
+                    position.set("authorized", ByteBufUtil.hexDump(buf.readBytes(8)));
                     break;
                 case 24:
                     for (int i = 0; i < length / 2; i++) {
@@ -124,16 +126,16 @@ public class TytanProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         buf.readUnsignedByte(); // protocol
         buf.readUnsignedShort(); // length
         int index = buf.readUnsignedByte() >> 3;
 
         if (channel != null) {
-            ChannelBuffer response = ChannelBuffers.copiedBuffer(
+            ByteBuf response = Unpooled.copiedBuffer(
                     "^" + index, StandardCharsets.US_ASCII);
-            channel.write(response, remoteAddress);
+            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
         }
 
         String id = String.valueOf(buf.readUnsignedInt());
diff --git a/src/org/traccar/protocol/TzoneProtocol.java b/src/org/traccar/protocol/TzoneProtocol.java
index 38d5b139a..21a304402 100644
--- a/src/org/traccar/protocol/TzoneProtocol.java
+++ b/src/org/traccar/protocol/TzoneProtocol.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,12 +15,12 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.frame.LengthFieldBasedFrameDecoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
+import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
+
 import java.util.List;
 
 public class TzoneProtocol extends BaseProtocol {
@@ -31,9 +31,9 @@ public class TzoneProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+        serverList.add(new TrackerServer(false, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(256, 2, 2, 2, 0));
                 pipeline.addLast("objectDecoder", new TzoneProtocolDecoder(TzoneProtocol.this));
             }
diff --git a/src/org/traccar/protocol/TzoneProtocolDecoder.java b/src/org/traccar/protocol/TzoneProtocolDecoder.java
index 984891bb6..4983410a5 100644
--- a/src/org/traccar/protocol/TzoneProtocolDecoder.java
+++ b/src/org/traccar/protocol/TzoneProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,9 +15,9 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBuffers;
-import org.jboss.netty.channel.Channel;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.BitUtil;
@@ -57,7 +57,7 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
-    private void decodeCards(Position position, ChannelBuffer buf) {
+    private void decodeCards(Position position, ByteBuf buf) {
 
         int index = 1;
         for (int i = 0; i < 4; i++) {
@@ -77,7 +77,7 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
                         length += 1;
                     }
 
-                    String num = ChannelBuffers.hexDump(buf.readBytes(length / 2));
+                    String num = ByteBufUtil.hexDump(buf.readBytes(length / 2));
 
                     if (odd) {
                         num = num.substring(1);
@@ -92,7 +92,7 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
 
     }
 
-    private void decodePassengers(Position position, ChannelBuffer buf) {
+    private void decodePassengers(Position position, ByteBuf buf) {
 
         int blockLength = buf.readUnsignedShort();
         int blockEnd = buf.readerIndex() + blockLength;
@@ -112,7 +112,7 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         buf.skipBytes(2); // header
         buf.readUnsignedShort(); // length
@@ -122,7 +122,7 @@ public class TzoneProtocolDecoder extends BaseProtocolDecoder {
         int hardware = buf.readUnsignedShort();
         long firmware = buf.readUnsignedInt();
 
-        String imei = ChannelBuffers.hexDump(buf.readBytes(8)).substring(1);
+        String imei = ByteBufUtil.hexDump(buf.readBytes(8)).substring(1);
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
         if (deviceSession == null) {
             return null;