Migrate L, M, N protocols

43 files changed, 491 insertions, 532 deletions

diff --git a/src/org/traccar/protocol/L100FrameDecoder.java b/src/org/traccar/protocol/L100FrameDecoder.java
index 98c2f9768..29839eb3a 100644
--- a/src/org/traccar/protocol/L100FrameDecoder.java
+++ b/src/org/traccar/protocol/L100FrameDecoder.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.
@@ -15,16 +15,16 @@
  */
 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 io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
 
-public class L100FrameDecoder extends FrameDecoder {
+public class L100FrameDecoder 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() < 80) {
             return null;
@@ -42,7 +42,7 @@ public class L100FrameDecoder extends FrameDecoder {
 
         if (buf.readableBytes() >= index - buf.readerIndex()) {
             buf.skipBytes(2); // header
-            ChannelBuffer frame = buf.readBytes(index - buf.readerIndex() - 2);
+            ByteBuf frame = buf.readBytes(index - buf.readerIndex() - 2);
             buf.skipBytes(2); // footer
             return frame;
         }
diff --git a/src/org/traccar/protocol/L100Protocol.java b/src/org/traccar/protocol/L100Protocol.java
index 245f073fb..2d29bee40 100644
--- a/src/org/traccar/protocol/L100Protocol.java
+++ b/src/org/traccar/protocol/L100Protocol.java
@@ -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 L100Protocol 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 L100FrameDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/L100ProtocolDecoder.java b/src/org/traccar/protocol/L100ProtocolDecoder.java
index fe2c298e1..ad93baf67 100644
--- a/src/org/traccar/protocol/L100ProtocolDecoder.java
+++ b/src/org/traccar/protocol/L100ProtocolDecoder.java
@@ -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/LaipacProtocol.java b/src/org/traccar/protocol/LaipacProtocol.java
index 45b803a0f..aafada331 100644
--- a/src/org/traccar/protocol/LaipacProtocol.java
+++ b/src/org/traccar/protocol/LaipacProtocol.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 LaipacProtocol 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/LaipacProtocolDecoder.java b/src/org/traccar/protocol/LaipacProtocolDecoder.java
index bfaff9ec4..8634a0e32 100644
--- a/src/org/traccar/protocol/LaipacProtocolDecoder.java
+++ b/src/org/traccar/protocol/LaipacProtocolDecoder.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.Checksum;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Parser;
@@ -93,7 +94,7 @@ public class LaipacProtocolDecoder extends BaseProtocolDecoder {
         String sentence = (String) msg;
 
         if (sentence.startsWith("$ECHK") && channel != null) {
-            channel.write(sentence + "\r\n"); // heartbeat
+            channel.writeAndFlush(new NetworkMessage(sentence + "\r\n", remoteAddress)); // heartbeat
             return null;
         }
 
@@ -146,15 +147,15 @@ public class LaipacProtocolDecoder extends BaseProtocolDecoder {
 
         if (channel != null) {
             if (event.equals("3")) {
-                channel.write("$AVCFG,00000000,d*31\r\n");
+                channel.writeAndFlush(new NetworkMessage("$AVCFG,00000000,d*31\r\n", remoteAddress));
             } else if (event.equals("X") || event.equals("4")) {
-                channel.write("$AVCFG,00000000,x*2D\r\n");
+                channel.writeAndFlush(new NetworkMessage("$AVCFG,00000000,x*2D\r\n", remoteAddress));
             } else if (event.equals("Z")) {
-                channel.write("$AVCFG,00000000,z*2F\r\n");
+                channel.writeAndFlush(new NetworkMessage("$AVCFG,00000000,z*2F\r\n", remoteAddress));
             } else if (Character.isLowerCase(status.charAt(0))) {
                 String response = "$EAVACK," + event + "," + checksum;
                 response += Checksum.nmea(response) + "\r\n";
-                channel.write(response);
+                channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
             }
         }
 
diff --git a/src/org/traccar/protocol/M2cProtocol.java b/src/org/traccar/protocol/M2cProtocol.java
index 2c3187095..ef16108cd 100644
--- a/src/org/traccar/protocol/M2cProtocol.java
+++ b/src/org/traccar/protocol/M2cProtocol.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.
@@ -15,12 +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 M2cProtocol 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, ']'));
                 pipeline.addLast("stringDecoder", new StringDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
diff --git a/src/org/traccar/protocol/M2cProtocolDecoder.java b/src/org/traccar/protocol/M2cProtocolDecoder.java
index c11136f4c..67b2accb9 100644
--- a/src/org/traccar/protocol/M2cProtocolDecoder.java
+++ b/src/org/traccar/protocol/M2cProtocolDecoder.java
@@ -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/M2mProtocol.java b/src/org/traccar/protocol/M2mProtocol.java
index 09393fed0..70dfc7b39 100644
--- a/src/org/traccar/protocol/M2mProtocol.java
+++ b/src/org/traccar/protocol/M2mProtocol.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.
@@ -15,10 +15,9 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
-import org.jboss.netty.handler.codec.frame.FixedLengthFrameDecoder;
+import io.netty.handler.codec.FixedLengthFrameDecoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -31,9 +30,9 @@ public class M2mProtocol 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 FixedLengthFrameDecoder(23));
                 pipeline.addLast("objectDecoder", new M2mProtocolDecoder(M2mProtocol.this));
             }
diff --git a/src/org/traccar/protocol/M2mProtocolDecoder.java b/src/org/traccar/protocol/M2mProtocolDecoder.java
index b30919865..7bb704904 100644
--- a/src/org/traccar/protocol/M2mProtocolDecoder.java
+++ b/src/org/traccar/protocol/M2mProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 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.
@@ -15,8 +15,8 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.channel.Channel;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.helper.DateBuilder;
@@ -36,7 +36,7 @@ public class M2mProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         // Remove offset
         for (int i = 0; i < buf.readableBytes(); i++) {
diff --git a/src/org/traccar/protocol/MaestroProtocol.java b/src/org/traccar/protocol/MaestroProtocol.java
index 5e0b69916..5a7cbcf4d 100644
--- a/src/org/traccar/protocol/MaestroProtocol.java
+++ b/src/org/traccar/protocol/MaestroProtocol.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.frame.FixedLengthFrameDecoder;
-import org.jboss.netty.handler.codec.string.StringDecoder;
-import org.jboss.netty.handler.codec.string.StringEncoder;
+import io.netty.handler.codec.FixedLengthFrameDecoder;
+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 MaestroProtocol 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 FixedLengthFrameDecoder(160));
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/MaestroProtocolDecoder.java b/src/org/traccar/protocol/MaestroProtocolDecoder.java
index 6068c93b9..32072007e 100644
--- a/src/org/traccar/protocol/MaestroProtocolDecoder.java
+++ b/src/org/traccar/protocol/MaestroProtocolDecoder.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/ManPowerProtocol.java b/src/org/traccar/protocol/ManPowerProtocol.java
index 60ce8b282..5567cdccb 100644
--- a/src/org/traccar/protocol/ManPowerProtocol.java
+++ b/src/org/traccar/protocol/ManPowerProtocol.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 ManPowerProtocol 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/ManPowerProtocolDecoder.java b/src/org/traccar/protocol/ManPowerProtocolDecoder.java
index 0b1c410c3..d1b6bdc72 100644
--- a/src/org/traccar/protocol/ManPowerProtocolDecoder.java
+++ b/src/org/traccar/protocol/ManPowerProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 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/MegastekFrameDecoder.java b/src/org/traccar/protocol/MegastekFrameDecoder.java
index d9cb07108..0bdd06a79 100644
--- a/src/org/traccar/protocol/MegastekFrameDecoder.java
+++ b/src/org/traccar/protocol/MegastekFrameDecoder.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.
@@ -15,19 +15,19 @@
  */
 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 org.traccar.BaseFrameDecoder;
+import org.traccar.helper.BufferUtil;
 
 import java.nio.charset.StandardCharsets;
 
-public class MegastekFrameDecoder extends FrameDecoder {
+public class MegastekFrameDecoder 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;
@@ -42,12 +42,12 @@ public class MegastekFrameDecoder extends FrameDecoder {
             while (buf.getByte(buf.readerIndex()) == '\r' || buf.getByte(buf.readerIndex()) == '\n') {
                 buf.skipBytes(1);
             }
-            int delimiter = buf.indexOf(buf.readerIndex(), buf.writerIndex(), new StringFinder("\r\n"));
+            int delimiter = BufferUtil.indexOf("\r\n", buf);
             if (delimiter == -1) {
                 delimiter = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '!');
             }
             if (delimiter != -1) {
-                ChannelBuffer result = buf.readBytes(delimiter - buf.readerIndex());
+                ByteBuf result = buf.readBytes(delimiter - buf.readerIndex());
                 buf.skipBytes(1);
                 return result;
             }
diff --git a/src/org/traccar/protocol/MegastekProtocol.java b/src/org/traccar/protocol/MegastekProtocol.java
index b28a05b92..862d1abd2 100644
--- a/src/org/traccar/protocol/MegastekProtocol.java
+++ b/src/org/traccar/protocol/MegastekProtocol.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 java.util.List;
@@ -32,9 +31,9 @@ public class MegastekProtocol 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 MegastekFrameDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("stringDecoder", new StringDecoder());
diff --git a/src/org/traccar/protocol/MegastekProtocolDecoder.java b/src/org/traccar/protocol/MegastekProtocolDecoder.java
index 14d39e0cc..15f7be582 100644
--- a/src/org/traccar/protocol/MegastekProtocolDecoder.java
+++ b/src/org/traccar/protocol/MegastekProtocolDecoder.java
@@ -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/MeiligaoFrameDecoder.java b/src/org/traccar/protocol/MeiligaoFrameDecoder.java
index 9340b6198..e14d8ed58 100644
--- a/src/org/traccar/protocol/MeiligaoFrameDecoder.java
+++ b/src/org/traccar/protocol/MeiligaoFrameDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 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.
@@ -15,21 +15,21 @@
  */
 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 io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
 
-public class MeiligaoFrameDecoder extends FrameDecoder {
+public class MeiligaoFrameDecoder extends BaseFrameDecoder {
 
     private static final int MESSAGE_HEADER = 4;
 
     @Override
     protected Object decode(
-            ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
 
         // Strip not '$' (0x24) bytes from the beginning
-        while (buf.readable() && buf.getUnsignedByte(buf.readerIndex()) != 0x24) {
+        while (buf.isReadable() && buf.getUnsignedByte(buf.readerIndex()) != 0x24) {
             buf.readByte();
         }
 
diff --git a/src/org/traccar/protocol/MeiligaoProtocol.java b/src/org/traccar/protocol/MeiligaoProtocol.java
index c72262017..0b745f0c6 100644
--- a/src/org/traccar/protocol/MeiligaoProtocol.java
+++ b/src/org/traccar/protocol/MeiligaoProtocol.java
@@ -15,10 +15,8 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ConnectionlessBootstrap;
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 import org.traccar.model.Command;
 
@@ -41,17 +39,17 @@ public class MeiligaoProtocol 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 MeiligaoFrameDecoder());
                 pipeline.addLast("objectEncoder", new MeiligaoProtocolEncoder());
                 pipeline.addLast("objectDecoder", new MeiligaoProtocolDecoder(MeiligaoProtocol.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("objectEncoder", new MeiligaoProtocolEncoder());
                 pipeline.addLast("objectDecoder", new MeiligaoProtocolDecoder(MeiligaoProtocol.this));
             }
diff --git a/src/org/traccar/protocol/MeiligaoProtocolDecoder.java b/src/org/traccar/protocol/MeiligaoProtocolDecoder.java
index 5ff0dedc7..35512945a 100644
--- a/src/org/traccar/protocol/MeiligaoProtocolDecoder.java
+++ b/src/org/traccar/protocol/MeiligaoProtocolDecoder.java
@@ -15,12 +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.Unpooled;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.Context;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.helper.BitUtil;
 import org.traccar.helper.Checksum;
 import org.traccar.helper.DateBuilder;
@@ -39,7 +40,7 @@ import java.util.regex.Pattern;
 
 public class MeiligaoProtocolDecoder extends BaseProtocolDecoder {
 
-    private Map<Byte, ChannelBuffer> photos = new HashMap<>();
+    private Map<Byte, ByteBuf> photos = new HashMap<>();
 
     public MeiligaoProtocolDecoder(MeiligaoProtocol protocol) {
         super(protocol);
@@ -153,7 +154,7 @@ public class MeiligaoProtocolDecoder extends BaseProtocolDecoder {
     public static final int MSG_UPLOAD_COMPLETE = 0x0f80;
     public static final int MSG_REBOOT_GPS = 0x4902;
 
-    private DeviceSession identify(ChannelBuffer buf, Channel channel, SocketAddress remoteAddress) {
+    private DeviceSession identify(ByteBuf buf, Channel channel, SocketAddress remoteAddress) {
         StringBuilder builder = new StringBuilder();
 
         for (int i = 0; i < 7; i++) {
@@ -184,10 +185,10 @@ public class MeiligaoProtocolDecoder extends BaseProtocolDecoder {
     }
 
     private static void sendResponse(
-            Channel channel, SocketAddress remoteAddress, ChannelBuffer id, int type, ChannelBuffer msg) {
+            Channel channel, SocketAddress remoteAddress, ByteBuf id, int type, ByteBuf msg) {
 
         if (channel != null) {
-            ChannelBuffer buf = ChannelBuffers.buffer(
+            ByteBuf buf = Unpooled.buffer(
                     2 + 2 + id.readableBytes() + 2 + msg.readableBytes() + 2 + 2);
 
             buf.writeByte('@');
@@ -196,18 +197,18 @@ public class MeiligaoProtocolDecoder extends BaseProtocolDecoder {
             buf.writeBytes(id);
             buf.writeShort(type);
             buf.writeBytes(msg);
-            buf.writeShort(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, buf.toByteBuffer()));
+            buf.writeShort(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, buf.nioBuffer()));
             buf.writeByte('\r');
             buf.writeByte('\n');
 
-            channel.write(buf, remoteAddress);
+            channel.writeAndFlush(new NetworkMessage(buf, remoteAddress));
         }
     }
 
     private String getServer(Channel channel) {
         String server = Context.getConfig().getString(getProtocolName() + ".server");
         if (server == null && channel != null) {
-            InetSocketAddress address = (InetSocketAddress) channel.getLocalAddress();
+            InetSocketAddress address = (InetSocketAddress) channel.localAddress();
             server = address.getAddress().getHostAddress() + ":" + address.getPort();
         }
         return server;
@@ -357,7 +358,7 @@ public class MeiligaoProtocolDecoder extends BaseProtocolDecoder {
         return position;
     }
 
-    private List<Position> decodeRetransmission(ChannelBuffer buf, DeviceSession deviceSession) {
+    private List<Position> decodeRetransmission(ByteBuf buf, DeviceSession deviceSession) {
         List<Position> positions = new LinkedList<>();
 
         int count = buf.readUnsignedByte();
@@ -394,34 +395,34 @@ public class MeiligaoProtocolDecoder 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.readShort(); // length
-        ChannelBuffer id = buf.readBytes(7);
+        ByteBuf id = buf.readBytes(7);
         int command = buf.readUnsignedShort();
-        ChannelBuffer response;
+        ByteBuf response;
 
         if (command == MSG_LOGIN) {
-            response = ChannelBuffers.wrappedBuffer(new byte[]{0x01});
+            response = Unpooled.wrappedBuffer(new byte[]{0x01});
             sendResponse(channel, remoteAddress, id, MSG_LOGIN_RESPONSE, response);
             return null;
         } else if (command == MSG_HEARTBEAT) {
-            response = ChannelBuffers.wrappedBuffer(new byte[]{0x01});
+            response = Unpooled.wrappedBuffer(new byte[]{0x01});
             sendResponse(channel, remoteAddress, id, MSG_HEARTBEAT, response);
             return null;
         } else if (command == MSG_SERVER) {
-            response = ChannelBuffers.copiedBuffer(getServer(channel), StandardCharsets.US_ASCII);
+            response = Unpooled.copiedBuffer(getServer(channel), StandardCharsets.US_ASCII);
             sendResponse(channel, remoteAddress, id, MSG_SERVER, response);
             return null;
         } else if (command == MSG_UPLOAD_PHOTO) {
             byte imageIndex = buf.readByte();
-            photos.put(imageIndex, ChannelBuffers.dynamicBuffer());
-            response = ChannelBuffers.copiedBuffer(new byte[]{imageIndex});
+            photos.put(imageIndex, Unpooled.buffer());
+            response = Unpooled.copiedBuffer(new byte[]{imageIndex});
             sendResponse(channel, remoteAddress, id, MSG_UPLOAD_PHOTO_RESPONSE, response);
             return null;
         } else if (command == MSG_UPLOAD_COMPLETE) {
             byte imageIndex = buf.readByte();
-            response = ChannelBuffers.copiedBuffer(new byte[]{imageIndex, 0, 0});
+            response = Unpooled.copiedBuffer(new byte[]{imageIndex, 0, 0});
             sendResponse(channel, remoteAddress, id, MSG_RETRANSMISSION, response);
             return null;
         }
diff --git a/src/org/traccar/protocol/MeiligaoProtocolEncoder.java b/src/org/traccar/protocol/MeiligaoProtocolEncoder.java
index 1b444e90a..6052b2617 100644
--- a/src/org/traccar/protocol/MeiligaoProtocolEncoder.java
+++ b/src/org/traccar/protocol/MeiligaoProtocolEncoder.java
@@ -15,8 +15,8 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBuffers;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
 import org.traccar.BaseProtocolEncoder;
 import org.traccar.helper.Checksum;
 import org.traccar.helper.DataConverter;
@@ -28,9 +28,9 @@ import java.util.TimeZone;
 
 public class MeiligaoProtocolEncoder extends BaseProtocolEncoder {
 
-    private ChannelBuffer encodeContent(long deviceId, int type, ChannelBuffer content) {
+    private ByteBuf encodeContent(long deviceId, int type, ByteBuf content) {
 
-        ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
+        ByteBuf buf = Unpooled.buffer();
 
         buf.writeByte('@');
         buf.writeByte('@');
@@ -43,7 +43,7 @@ public class MeiligaoProtocolEncoder extends BaseProtocolEncoder {
 
         buf.writeBytes(content);
 
-        buf.writeShort(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, buf.toByteBuffer()));
+        buf.writeShort(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, buf.nioBuffer()));
 
         buf.writeByte('\r');
         buf.writeByte('\n');
@@ -54,7 +54,7 @@ public class MeiligaoProtocolEncoder extends BaseProtocolEncoder {
     @Override
     protected Object encodeCommand(Command command) {
 
-        ChannelBuffer content = ChannelBuffers.dynamicBuffer();
+        ByteBuf content = Unpooled.buffer();
 
         switch (command.getType()) {
             case Command.TYPE_POSITION_SINGLE:
diff --git a/src/org/traccar/protocol/MeitrackFrameDecoder.java b/src/org/traccar/protocol/MeitrackFrameDecoder.java
index 1eb0dae0f..5133dd2dc 100644
--- a/src/org/traccar/protocol/MeitrackFrameDecoder.java
+++ b/src/org/traccar/protocol/MeitrackFrameDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 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.
@@ -15,18 +15,18 @@
  */
 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 io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
 
 import java.nio.charset.StandardCharsets;
 
-public class MeitrackFrameDecoder extends FrameDecoder {
+public class MeitrackFrameDecoder 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;
diff --git a/src/org/traccar/protocol/MeitrackProtocol.java b/src/org/traccar/protocol/MeitrackProtocol.java
index e89825da5..b9be2a8fd 100644
--- a/src/org/traccar/protocol/MeitrackProtocol.java
+++ b/src/org/traccar/protocol/MeitrackProtocol.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.
@@ -15,15 +15,12 @@
  */
 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.string.StringEncoder;
+import io.netty.handler.codec.string.StringEncoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 import org.traccar.model.Command;
 
-import java.nio.ByteOrder;
 import java.util.List;
 
 public class MeitrackProtocol extends BaseProtocol {
@@ -42,27 +39,23 @@ public class MeitrackProtocol 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 MeitrackFrameDecoder());
                 pipeline.addLast("stringEncoder", new StringEncoder());
                 pipeline.addLast("objectEncoder", new MeitrackProtocolEncoder());
                 pipeline.addLast("objectDecoder", new MeitrackProtocolDecoder(MeitrackProtocol.this));
             }
-        };
-        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
-        serverList.add(server);
-        server = 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("objectEncoder", new MeitrackProtocolEncoder());
                 pipeline.addLast("objectDecoder", new MeitrackProtocolDecoder(MeitrackProtocol.this));
             }
-        };
-        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
-        serverList.add(server);
+        });
     }
 
 }
diff --git a/src/org/traccar/protocol/MeitrackProtocolDecoder.java b/src/org/traccar/protocol/MeitrackProtocolDecoder.java
index 9109323ec..a38f52b77 100644
--- a/src/org/traccar/protocol/MeitrackProtocolDecoder.java
+++ b/src/org/traccar/protocol/MeitrackProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 - 2017 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.
@@ -15,12 +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.Unpooled;
+import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.Context;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.helper.Checksum;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
@@ -38,7 +39,7 @@ import java.util.regex.Pattern;
 
 public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
 
-    private ChannelBuffer photo;
+    private ByteBuf photo;
 
     public MeitrackProtocolDecoder(MeitrackProtocol protocol) {
         super(protocol);
@@ -119,7 +120,7 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
-    private Position decodeRegular(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
+    private Position decodeRegular(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
 
         Parser parser = new Parser(PATTERN, buf.toString(StandardCharsets.US_ASCII));
         if (!parser.matches()) {
@@ -270,7 +271,7 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
 
     }
 
-    private List<Position> decodeBinaryC(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
+    private List<Position> decodeBinaryC(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
         List<Position> positions = new LinkedList<>();
 
         String flag = buf.toString(2, 1, StandardCharsets.US_ASCII);
@@ -291,38 +292,38 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
 
             position.set(Position.KEY_EVENT, buf.readUnsignedByte());
 
-            position.setLatitude(buf.readInt() * 0.000001);
-            position.setLongitude(buf.readInt() * 0.000001);
+            position.setLatitude(buf.readIntLE() * 0.000001);
+            position.setLongitude(buf.readIntLE() * 0.000001);
 
-            position.setTime(new Date((946684800 + buf.readUnsignedInt()) * 1000)); // 946684800 = 2000-01-01
+            position.setTime(new Date((946684800 + buf.readUnsignedIntLE()) * 1000)); // 946684800 = 2000-01-01
 
             position.setValid(buf.readUnsignedByte() == 1);
 
             position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
             int rssi = buf.readUnsignedByte();
 
-            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
-            position.setCourse(buf.readUnsignedShort());
+            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
+            position.setCourse(buf.readUnsignedShortLE());
 
-            position.set(Position.KEY_HDOP, buf.readUnsignedShort() * 0.1);
+            position.set(Position.KEY_HDOP, buf.readUnsignedShortLE() * 0.1);
 
-            position.setAltitude(buf.readUnsignedShort());
+            position.setAltitude(buf.readUnsignedShortLE());
 
-            position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
-            position.set("runtime", buf.readUnsignedInt());
+            position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+            position.set("runtime", buf.readUnsignedIntLE());
 
             position.setNetwork(new Network(CellTower.from(
-                    buf.readUnsignedShort(), buf.readUnsignedShort(),
-                    buf.readUnsignedShort(), buf.readUnsignedShort(),
+                    buf.readUnsignedShortLE(), buf.readUnsignedShortLE(),
+                    buf.readUnsignedShortLE(), buf.readUnsignedShortLE(),
                     rssi)));
 
-            position.set(Position.KEY_STATUS, buf.readUnsignedShort());
+            position.set(Position.KEY_STATUS, buf.readUnsignedShortLE());
 
-            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
-            position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.01);
-            position.set(Position.KEY_POWER, buf.readUnsignedShort());
+            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE());
+            position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01);
+            position.set(Position.KEY_POWER, buf.readUnsignedShortLE());
 
-            buf.readUnsignedInt(); // geo-fence
+            buf.readUnsignedIntLE(); // geo-fence
 
             positions.add(position);
         }
@@ -337,13 +338,13 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
             }
             command.append(String.format("%02x", checksum & 0xff).toUpperCase());
             command.append("\r\n");
-            channel.write(command.toString()); // delete processed data
+            channel.writeAndFlush(new NetworkMessage(command.toString(), remoteAddress)); // delete processed data
         }
 
         return positions;
     }
 
-    private List<Position> decodeBinaryE(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
+    private List<Position> decodeBinaryE(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
         List<Position> positions = new LinkedList<>();
 
         buf.readerIndex(buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',') + 1);
@@ -355,15 +356,15 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
             return null;
         }
 
-        buf.readUnsignedInt(); // remaining cache
-        int count = buf.readUnsignedShort();
+        buf.readUnsignedIntLE(); // remaining cache
+        int count = buf.readUnsignedShortLE();
 
         for (int i = 0; i < count; i++) {
             Position position = new Position(getProtocolName());
             position.setDeviceId(deviceSession.getDeviceId());
 
-            buf.readUnsignedShort(); // length
-            buf.readUnsignedShort(); // index
+            buf.readUnsignedShortLE(); // length
+            buf.readUnsignedShortLE(); // index
 
             int paramCount = buf.readUnsignedByte();
             for (int j = 0; j < paramCount; j++) {
@@ -392,22 +393,22 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
                 int id = buf.readUnsignedByte();
                 switch (id) {
                     case 0x08:
-                        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
+                        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
                         break;
                     case 0x09:
-                        position.setCourse(buf.readUnsignedShort());
+                        position.setCourse(buf.readUnsignedShortLE());
                         break;
                     case 0x0B:
-                        position.setAltitude(buf.readShort());
+                        position.setAltitude(buf.readShortLE());
                         break;
                     case 0x19:
-                        position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.01);
+                        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01);
                         break;
                     case 0x1A:
-                        position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.01);
+                        position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.01);
                         break;
                     default:
-                        buf.readUnsignedShort();
+                        buf.readUnsignedShortLE();
                         break;
                 }
             }
@@ -417,19 +418,19 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
                 int id = buf.readUnsignedByte();
                 switch (id) {
                     case 0x02:
-                        position.setLatitude(buf.readInt() * 0.000001);
+                        position.setLatitude(buf.readIntLE() * 0.000001);
                         break;
                     case 0x03:
-                        position.setLongitude(buf.readInt() * 0.000001);
+                        position.setLongitude(buf.readIntLE() * 0.000001);
                         break;
                     case 0x04:
-                        position.setTime(new Date((946684800 + buf.readUnsignedInt()) * 1000)); // 2000-01-01
+                        position.setTime(new Date((946684800 + buf.readUnsignedIntLE()) * 1000)); // 2000-01-01
                         break;
                     case 0x0D:
-                        position.set("runtime", buf.readUnsignedInt());
+                        position.set("runtime", buf.readUnsignedIntLE());
                         break;
                     default:
-                        buf.readUnsignedInt();
+                        buf.readUnsignedIntLE();
                         break;
                 }
             }
@@ -446,13 +447,13 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
         return positions;
     }
 
-    private void requestPhotoPacket(Channel channel, String imei, String file, int index) {
+    private void requestPhotoPacket(Channel channel, SocketAddress socketAddress, String imei, String file, int index) {
         if (channel != null) {
             String content = "D00," + file + "," + index;
             int length = 1 + imei.length() + 1 + content.length() + 5;
             String response = String.format("@@O%02d,%s,%s*", length, imei, content);
             response += Checksum.sum(response) + "\r\n";
-            channel.write(response);
+            channel.writeAndFlush(new NetworkMessage(response, socketAddress));
         }
     }
 
@@ -460,7 +461,7 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
         String imei = buf.toString(index + 1, 15, StandardCharsets.US_ASCII);
@@ -470,7 +471,7 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
         switch (type) {
             case "D00":
                 if (photo == null) {
-                    photo = ChannelBuffers.dynamicBuffer();
+                    photo = Unpooled.buffer();
                 }
 
                 index = index + 1 + type.length() + 1;
@@ -498,13 +499,13 @@ public class MeitrackProtocolDecoder extends BaseProtocolDecoder {
                     return position;
                 } else {
                     if ((current + 1) % 8 == 0) {
-                        requestPhotoPacket(channel, imei, file, current + 1);
+                        requestPhotoPacket(channel, remoteAddress, imei, file, current + 1);
                     }
                     return null;
                 }
             case "D03":
-                photo = ChannelBuffers.dynamicBuffer();
-                requestPhotoPacket(channel, imei, "camera_picture.jpg", 0);
+                photo = Unpooled.buffer();
+                requestPhotoPacket(channel, remoteAddress, imei, "camera_picture.jpg", 0);
                 return null;
             case "CCC":
                 return decodeBinaryC(channel, remoteAddress, buf);
diff --git a/src/org/traccar/protocol/MiniFinderProtocol.java b/src/org/traccar/protocol/MiniFinderProtocol.java
index c36acb238..05641dcbe 100644
--- a/src/org/traccar/protocol/MiniFinderProtocol.java
+++ b/src/org/traccar/protocol/MiniFinderProtocol.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.
@@ -15,12 +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 org.traccar.model.Command;
 
@@ -46,9 +45,9 @@ public class MiniFinderProtocol 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/MiniFinderProtocolDecoder.java b/src/org/traccar/protocol/MiniFinderProtocolDecoder.java
index ab046eca3..d7af66ba7 100644
--- a/src/org/traccar/protocol/MiniFinderProtocolDecoder.java
+++ b/src/org/traccar/protocol/MiniFinderProtocolDecoder.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.BitUtil;
diff --git a/src/org/traccar/protocol/Mta6Protocol.java b/src/org/traccar/protocol/Mta6Protocol.java
index 65a48808d..e0b3f6063 100644
--- a/src/org/traccar/protocol/Mta6Protocol.java
+++ b/src/org/traccar/protocol/Mta6Protocol.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.http.HttpRequestDecoder;
-import org.jboss.netty.handler.codec.http.HttpResponseEncoder;
+import io.netty.handler.codec.http.HttpObjectAggregator;
+import io.netty.handler.codec.http.HttpRequestDecoder;
+import io.netty.handler.codec.http.HttpResponseEncoder;
 import org.traccar.BaseProtocol;
 import org.traccar.Context;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.util.List;
@@ -33,11 +33,12 @@ public class Mta6Protocol 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("httpEncoder", new HttpResponseEncoder());
                 pipeline.addLast("httpDecoder", new HttpRequestDecoder());
+                pipeline.addLast("httpAggregator", new HttpObjectAggregator(65535));
                 pipeline.addLast("objectDecoder", new Mta6ProtocolDecoder(
                         Mta6Protocol.this, !Context.getConfig().getBoolean(getName() + ".can")));
             }
diff --git a/src/org/traccar/protocol/Mta6ProtocolDecoder.java b/src/org/traccar/protocol/Mta6ProtocolDecoder.java
index 13b187e80..56a5669ae 100644
--- a/src/org/traccar/protocol/Mta6ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Mta6ProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 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.
@@ -15,14 +15,14 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBuffers;
-import org.jboss.netty.channel.Channel;
-import org.jboss.netty.handler.codec.http.DefaultHttpResponse;
-import org.jboss.netty.handler.codec.http.HttpRequest;
-import org.jboss.netty.handler.codec.http.HttpResponse;
-import org.jboss.netty.handler.codec.http.HttpResponseStatus;
-import org.jboss.netty.handler.codec.http.HttpVersion;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import io.netty.handler.codec.http.DefaultFullHttpResponse;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.HttpVersion;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
 import org.traccar.Protocol;
@@ -48,22 +48,20 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
     }
 
     private void sendContinue(Channel channel) {
-        HttpResponse response = new DefaultHttpResponse(
+        FullHttpResponse response = new DefaultFullHttpResponse(
                 HttpVersion.HTTP_1_1, HttpResponseStatus.CONTINUE);
         channel.write(response);
     }
 
     private void sendResponse(Channel channel, short packetId, short packetCount) {
-        HttpResponse response = new DefaultHttpResponse(
-                HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
-
-        ChannelBuffer begin = ChannelBuffers.copiedBuffer("#ACK#", StandardCharsets.US_ASCII);
-        ChannelBuffer end = ChannelBuffers.directBuffer(3);
+        ByteBuf begin = Unpooled.copiedBuffer("#ACK#", StandardCharsets.US_ASCII);
+        ByteBuf end = Unpooled.buffer(3);
         end.writeByte(packetId);
         end.writeByte(packetCount);
         end.writeByte(0);
 
-        response.setContent(ChannelBuffers.wrappedBuffer(begin, end));
+        FullHttpResponse response = new DefaultFullHttpResponse(
+                HttpVersion.HTTP_1_1, HttpResponseStatus.OK, Unpooled.wrappedBuffer(begin, end));
         channel.write(response);
     }
 
@@ -71,7 +69,7 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
 
         private int previousFloat;
 
-        public float readFloat(ChannelBuffer buf) {
+        public float readFloat(ByteBuf buf) {
             switch (buf.getUnsignedByte(buf.readerIndex()) >> 6) {
                 case 0:
                     previousFloat = buf.readInt() << 2;
@@ -98,7 +96,7 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
 
         private long weekNumber;
 
-        public Date readTime(ChannelBuffer buf) {
+        public Date readTime(ByteBuf buf) {
             long weekTime = (long) (readFloat(buf) * 1000);
             if (weekNumber == 0) {
                 weekNumber = buf.readUnsignedShort();
@@ -112,7 +110,7 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
 
     }
 
-    private List<Position> parseFormatA(DeviceSession deviceSession, ChannelBuffer buf) {
+    private List<Position> parseFormatA(DeviceSession deviceSession, ByteBuf buf) {
         List<Position> positions = new LinkedList<>();
 
         FloatReader latitudeReader = new FloatReader();
@@ -120,7 +118,7 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
         TimeReader timeReader = new TimeReader();
 
         try {
-            while (buf.readable()) {
+            while (buf.isReadable()) {
                 Position position = new Position(getProtocolName());
                 position.setDeviceId(deviceSession.getDeviceId());
 
@@ -199,7 +197,7 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
         return positions;
     }
 
-    private Position parseFormatA1(DeviceSession deviceSession, ChannelBuffer buf) {
+    private Position parseFormatA1(DeviceSession deviceSession, ByteBuf buf) {
         Position position = new Position(getProtocolName());
         position.setDeviceId(deviceSession.getDeviceId());
 
@@ -278,8 +276,8 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        HttpRequest request = (HttpRequest) msg;
-        ChannelBuffer buf = request.getContent();
+        FullHttpRequest request = (FullHttpRequest) msg;
+        ByteBuf buf = request.content();
 
         buf.skipBytes("id=".length());
         int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '&');
@@ -309,7 +307,7 @@ public class Mta6ProtocolDecoder extends BaseProtocolDecoder {
             } else {
                 return parseFormatA(deviceSession, buf);
             }
-        } //else if (0x34 0x38 0x4F 0x59)
+        } // else if (0x34 0x38 0x4F 0x59)
 
         return null;
     }
diff --git a/src/org/traccar/protocol/MtxProtocol.java b/src/org/traccar/protocol/MtxProtocol.java
index 58b2361cd..2f33909db 100644
--- a/src/org/traccar/protocol/MtxProtocol.java
+++ b/src/org/traccar/protocol/MtxProtocol.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 MtxProtocol 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/MtxProtocolDecoder.java b/src/org/traccar/protocol/MtxProtocolDecoder.java
index 412eac493..18bce399f 100644
--- a/src/org/traccar/protocol/MtxProtocolDecoder.java
+++ b/src/org/traccar/protocol/MtxProtocolDecoder.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 +15,10 @@
  */
 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.Parser;
 import org.traccar.helper.PatternBuilder;
 import org.traccar.model.Position;
@@ -60,7 +61,7 @@ public class MtxProtocolDecoder extends BaseProtocolDecoder {
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
         if (channel != null) {
-            channel.write("#ACK");
+            channel.writeAndFlush(new NetworkMessage("#ACK", remoteAddress));
         }
 
         Parser parser = new Parser(PATTERN, (String) msg);
diff --git a/src/org/traccar/protocol/MxtFrameDecoder.java b/src/org/traccar/protocol/MxtFrameDecoder.java
index b2cd6de93..d70e92da1 100644
--- a/src/org/traccar/protocol/MxtFrameDecoder.java
+++ b/src/org/traccar/protocol/MxtFrameDecoder.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.
@@ -15,21 +15,17 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBuffers;
-import org.jboss.netty.channel.Channel;
-import org.jboss.netty.channel.ChannelHandlerContext;
-import org.jboss.netty.handler.codec.frame.FrameDecoder;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
 
-import java.nio.ByteOrder;
-
-public class MxtFrameDecoder extends FrameDecoder {
+public class MxtFrameDecoder 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() < 2) {
             return null;
@@ -37,7 +33,7 @@ public class MxtFrameDecoder extends FrameDecoder {
 
         int index = buf.indexOf(buf.readerIndex() + 1, buf.writerIndex(), (byte) 0x04);
         if (index != -1) {
-            ChannelBuffer result = ChannelBuffers.buffer(ByteOrder.LITTLE_ENDIAN, index + 1 - buf.readerIndex());
+            ByteBuf result = Unpooled.buffer(index + 1 - buf.readerIndex());
 
             while (buf.readerIndex() <= index) {
                 int b = buf.readUnsignedByte();
diff --git a/src/org/traccar/protocol/MxtProtocol.java b/src/org/traccar/protocol/MxtProtocol.java
index 03c1da71e..8bfb958ab 100644
--- a/src/org/traccar/protocol/MxtProtocol.java
+++ b/src/org/traccar/protocol/MxtProtocol.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 +15,10 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
-import java.nio.ByteOrder;
 import java.util.List;
 
 public class MxtProtocol extends BaseProtocol {
@@ -31,15 +29,13 @@ public class MxtProtocol 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 MxtFrameDecoder());
                     pipeline.addLast("objectDecoder", new MxtProtocolDecoder(MxtProtocol.this));
                 }
-        };
-        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
-        serverList.add(server);
+        });
     }
 
 }
diff --git a/src/org/traccar/protocol/MxtProtocolDecoder.java b/src/org/traccar/protocol/MxtProtocolDecoder.java
index a97ae380d..be45b60c8 100644
--- a/src/org/traccar/protocol/MxtProtocolDecoder.java
+++ b/src/org/traccar/protocol/MxtProtocolDecoder.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.
@@ -15,11 +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.BitUtil;
 import org.traccar.helper.Checksum;
 import org.traccar.helper.DateBuilder;
@@ -27,7 +28,6 @@ import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
 
 import java.net.SocketAddress;
-import java.nio.ByteOrder;
 
 public class MxtProtocolDecoder extends BaseProtocolDecoder {
 
@@ -41,17 +41,17 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
 
     private static void sendResponse(Channel channel, int device, long id, int crc) {
         if (channel != null) {
-            ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 0);
+            ByteBuf response = Unpooled.buffer();
             response.writeByte(device);
             response.writeByte(MSG_ACK);
-            response.writeInt((int) id);
-            response.writeShort(crc);
-            response.writeShort(Checksum.crc16(
-                    Checksum.CRC16_XMODEM, response.toByteBuffer()));
+            response.writeIntLE((int) id);
+            response.writeShortLE(crc);
+            response.writeShortLE(Checksum.crc16(
+                    Checksum.CRC16_XMODEM, response.nioBuffer()));
 
-            ChannelBuffer encoded = ChannelBuffers.dynamicBuffer();
+            ByteBuf encoded = Unpooled.buffer(0);
             encoded.writeByte(0x01); // header
-            while (response.readable()) {
+            while (response.isReadable()) {
                 int b = response.readByte();
                 if (b == 0x01 || b == 0x04 || b == 0x10 || b == 0x11 || b == 0x13) {
                     encoded.writeByte(0x10);
@@ -60,7 +60,7 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
                 encoded.writeByte(b);
             }
             encoded.writeByte(0x04); // ending
-            channel.write(encoded);
+            channel.write(new NetworkMessage(encoded, channel.remoteAddress()));
         }
     }
 
@@ -68,13 +68,13 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         buf.readUnsignedByte(); // start
         int device = buf.readUnsignedByte(); // device descriptor
         int type = buf.readUnsignedByte();
 
-        long id = buf.readUnsignedInt();
+        long id = buf.readUnsignedIntLE();
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(id));
         if (deviceSession == null) {
             return null;
@@ -88,11 +88,11 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
             buf.readUnsignedByte(); // protocol
             int infoGroups = buf.readUnsignedByte();
 
-            position.set(Position.KEY_INDEX, buf.readUnsignedShort());
+            position.set(Position.KEY_INDEX, buf.readUnsignedShortLE());
 
             DateBuilder dateBuilder = new DateBuilder().setDate(2000, 1, 1);
 
-            long date = buf.readUnsignedInt();
+            long date = buf.readUnsignedIntLE();
 
             long days = BitUtil.from(date, 6 + 6 + 5);
             long hours = BitUtil.between(date, 6 + 6, 6 + 6 + 5);
@@ -104,10 +104,10 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
             position.setTime(dateBuilder.getDate());
 
             position.setValid(true);
-            position.setLatitude(buf.readInt() / 1000000.0);
-            position.setLongitude(buf.readInt() / 1000000.0);
+            position.setLatitude(buf.readIntLE() / 1000000.0);
+            position.setLongitude(buf.readIntLE() / 1000000.0);
 
-            long flags = buf.readUnsignedInt();
+            long flags = buf.readUnsignedIntLE();
             position.set(Position.KEY_IGNITION, BitUtil.check(flags, 0));
             if (BitUtil.check(flags, 1)) {
                 position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
@@ -115,7 +115,7 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
             position.set(Position.KEY_INPUT, BitUtil.between(flags, 2, 7));
             position.set(Position.KEY_OUTPUT, BitUtil.between(flags, 7, 10));
             position.setCourse(BitUtil.between(flags, 10, 13) * 45);
-            //position.setValid(BitUtil.check(flags, 15));
+            // position.setValid(BitUtil.check(flags, 15));
             position.set(Position.KEY_CHARGE, BitUtil.check(flags, 20));
 
             position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
@@ -135,34 +135,34 @@ public class MxtProtocolDecoder extends BaseProtocolDecoder {
                 position.set(Position.KEY_HDOP, buf.readUnsignedByte());
                 position.setAccuracy(buf.readUnsignedByte());
                 position.set(Position.KEY_RSSI, buf.readUnsignedByte());
-                buf.readUnsignedShort(); // time since boot
+                buf.readUnsignedShortLE(); // time since boot
                 position.set(Position.KEY_POWER, buf.readUnsignedByte());
                 position.set(Position.PREFIX_TEMP + 1, buf.readByte());
             }
 
             if (BitUtil.check(infoGroups, 3)) {
-                position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
+                position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
             }
 
             if (BitUtil.check(infoGroups, 4)) {
-                position.set(Position.KEY_HOURS, UnitsConverter.msFromMinutes(buf.readUnsignedInt()));
+                position.set(Position.KEY_HOURS, UnitsConverter.msFromMinutes(buf.readUnsignedIntLE()));
             }
 
             if (BitUtil.check(infoGroups, 5)) {
-                buf.readUnsignedInt(); // reason
+                buf.readUnsignedIntLE(); // reason
             }
 
             if (BitUtil.check(infoGroups, 6)) {
-                position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001);
-                position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
+                position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001);
+                position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE());
             }
 
             if (BitUtil.check(infoGroups, 7)) {
-                position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(buf.readUnsignedInt()));
+                position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(buf.readUnsignedIntLE()));
             }
 
             buf.readerIndex(buf.writerIndex() - 3);
-            sendResponse(channel, device, id, buf.readUnsignedShort());
+            sendResponse(channel, device, id, buf.readUnsignedShortLE());
 
             return position;
         }
diff --git a/src/org/traccar/protocol/NavigilFrameDecoder.java b/src/org/traccar/protocol/NavigilFrameDecoder.java
index 34eb28941..90912fb45 100644
--- a/src/org/traccar/protocol/NavigilFrameDecoder.java
+++ b/src/org/traccar/protocol/NavigilFrameDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 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.
@@ -15,21 +15,19 @@
  */
 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 io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
 
-public class NavigilFrameDecoder extends FrameDecoder {
+public class NavigilFrameDecoder extends BaseFrameDecoder {
 
     private static final int MESSAGE_HEADER = 20;
     private static final long PREAMBLE = 0x2477F5F6;
 
     @Override
     protected Object decode(
-            ChannelHandlerContext ctx,
-            Channel channel,
-            ChannelBuffer buf) throws Exception {
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
 
         // Check minimum length
         if (buf.readableBytes() < MESSAGE_HEADER) {
@@ -38,15 +36,15 @@ public class NavigilFrameDecoder extends FrameDecoder {
 
         // Check for preamble
         boolean hasPreamble = false;
-        if (buf.getUnsignedInt(buf.readerIndex()) == PREAMBLE) {
+        if (buf.getUnsignedIntLE(buf.readerIndex()) == PREAMBLE) {
             hasPreamble = true;
         }
 
         // Check length and return buffer
-        int length = buf.getUnsignedShort(buf.readerIndex() + 6);
+        int length = buf.getUnsignedShortLE(buf.readerIndex() + 6);
         if (buf.readableBytes() >= length) {
             if (hasPreamble) {
-                buf.readUnsignedInt();
+                buf.readUnsignedIntLE();
                 length -= 4;
             }
             return buf.readBytes(length);
diff --git a/src/org/traccar/protocol/NavigilProtocol.java b/src/org/traccar/protocol/NavigilProtocol.java
index 6646c6cc6..82f4af17d 100644
--- a/src/org/traccar/protocol/NavigilProtocol.java
+++ b/src/org/traccar/protocol/NavigilProtocol.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 +15,10 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-import org.jboss.netty.channel.ChannelPipeline;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
-import java.nio.ByteOrder;
 import java.util.List;
 
 public class NavigilProtocol extends BaseProtocol {
@@ -31,15 +29,13 @@ public class NavigilProtocol 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 NavigilFrameDecoder());
                 pipeline.addLast("objectDecoder", new NavigilProtocolDecoder(NavigilProtocol.this));
             }
-        };
-        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
-        serverList.add(server);
+        });
     }
 
 }
diff --git a/src/org/traccar/protocol/NavigilProtocolDecoder.java b/src/org/traccar/protocol/NavigilProtocolDecoder.java
index 4f3b4ad74..e71f8e36b 100644
--- a/src/org/traccar/protocol/NavigilProtocolDecoder.java
+++ b/src/org/traccar/protocol/NavigilProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 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.
@@ -15,18 +15,18 @@
  */
 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.Checksum;
 import org.traccar.helper.Log;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
 
 import java.net.SocketAddress;
-import java.nio.ByteOrder;
 import java.util.Date;
 
 public class NavigilProtocolDecoder extends BaseProtocolDecoder {
@@ -60,106 +60,106 @@ public class NavigilProtocolDecoder extends BaseProtocolDecoder {
     private int senderSequenceNumber = 1;
 
     private void sendAcknowledgment(Channel channel, int sequenceNumber) {
-        ChannelBuffer data = ChannelBuffers.directBuffer(ByteOrder.LITTLE_ENDIAN, 4);
-        data.writeShort(sequenceNumber);
-        data.writeShort(0); // OK
+        ByteBuf data = Unpooled.buffer(4);
+        data.writeShortLE(sequenceNumber);
+        data.writeShortLE(0); // OK
 
-        ChannelBuffer header = ChannelBuffers.directBuffer(ByteOrder.LITTLE_ENDIAN, 20);
+        ByteBuf header = Unpooled.buffer(20);
         header.writeByte(1); header.writeByte(0);
-        header.writeShort(senderSequenceNumber++);
-        header.writeShort(MSG_ACKNOWLEDGEMENT);
-        header.writeShort(header.capacity() + data.capacity());
-        header.writeShort(0);
-        header.writeShort(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, data.toByteBuffer()));
-        header.writeInt(0);
-        header.writeInt((int) (System.currentTimeMillis() / 1000) + LEAP_SECONDS_DELTA);
+        header.writeShortLE(senderSequenceNumber++);
+        header.writeShortLE(MSG_ACKNOWLEDGEMENT);
+        header.writeShortLE(header.capacity() + data.capacity());
+        header.writeShortLE(0);
+        header.writeShortLE(Checksum.crc16(Checksum.CRC16_CCITT_FALSE, data.nioBuffer()));
+        header.writeIntLE(0);
+        header.writeIntLE((int) (System.currentTimeMillis() / 1000) + LEAP_SECONDS_DELTA);
 
         if (channel != null) {
-            channel.write(ChannelBuffers.copiedBuffer(header, data));
+            channel.writeAndFlush(new NetworkMessage(Unpooled.copiedBuffer(header, data), channel.remoteAddress()));
         }
     }
 
     private Position parseUnitReport(
-            DeviceSession deviceSession, ChannelBuffer buf, int sequenceNumber) {
+            DeviceSession deviceSession, ByteBuf buf, int sequenceNumber) {
         Position position = new Position(getProtocolName());
 
         position.setValid(true);
         position.set(Position.KEY_INDEX, sequenceNumber);
         position.setDeviceId(deviceSession.getDeviceId());
 
-        buf.readUnsignedShort(); // report trigger
-        position.set(Position.KEY_FLAGS, buf.readUnsignedShort());
+        buf.readUnsignedShortLE(); // report trigger
+        position.set(Position.KEY_FLAGS, buf.readUnsignedShortLE());
 
-        position.setLatitude(buf.readInt() * 0.0000001);
-        position.setLongitude(buf.readInt() * 0.0000001);
-        position.setAltitude(buf.readUnsignedShort());
+        position.setLatitude(buf.readIntLE() * 0.0000001);
+        position.setLongitude(buf.readIntLE() * 0.0000001);
+        position.setAltitude(buf.readUnsignedShortLE());
 
-        position.set(Position.KEY_SATELLITES, buf.readUnsignedShort());
-        position.set(Position.KEY_SATELLITES_VISIBLE, buf.readUnsignedShort());
-        position.set("gpsAntennaState", buf.readUnsignedShort());
+        position.set(Position.KEY_SATELLITES, buf.readUnsignedShortLE());
+        position.set(Position.KEY_SATELLITES_VISIBLE, buf.readUnsignedShortLE());
+        position.set("gpsAntennaState", buf.readUnsignedShortLE());
 
-        position.setSpeed(buf.readUnsignedShort() * 0.194384);
-        position.setCourse(buf.readUnsignedShort());
+        position.setSpeed(buf.readUnsignedShortLE() * 0.194384);
+        position.setCourse(buf.readUnsignedShortLE());
 
-        position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
-        position.set(Position.KEY_DISTANCE, buf.readUnsignedInt());
+        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+        position.set(Position.KEY_DISTANCE, buf.readUnsignedIntLE());
 
-        position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001);
+        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
 
-        position.set(Position.KEY_CHARGE, buf.readUnsignedShort());
+        position.set(Position.KEY_CHARGE, buf.readUnsignedShortLE());
 
-        position.setTime(convertTimestamp(buf.readUnsignedInt()));
+        position.setTime(convertTimestamp(buf.readUnsignedIntLE()));
 
         return position;
     }
 
     private Position parseTg2Report(
-            DeviceSession deviceSession, ChannelBuffer buf, int sequenceNumber) {
+            DeviceSession deviceSession, ByteBuf buf, int sequenceNumber) {
         Position position = new Position(getProtocolName());
 
         position.setValid(true);
         position.set(Position.KEY_INDEX, sequenceNumber);
         position.setDeviceId(deviceSession.getDeviceId());
 
-        buf.readUnsignedShort(); // report trigger
+        buf.readUnsignedShortLE(); // report trigger
         buf.readUnsignedByte(); // reserved
         buf.readUnsignedByte(); // assisted GPS age
 
-        position.setTime(convertTimestamp(buf.readUnsignedInt()));
+        position.setTime(convertTimestamp(buf.readUnsignedIntLE()));
 
-        position.setLatitude(buf.readInt() * 0.0000001);
-        position.setLongitude(buf.readInt() * 0.0000001);
-        position.setAltitude(buf.readUnsignedShort());
+        position.setLatitude(buf.readIntLE() * 0.0000001);
+        position.setLongitude(buf.readIntLE() * 0.0000001);
+        position.setAltitude(buf.readUnsignedShortLE());
 
         position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
         position.set(Position.KEY_SATELLITES_VISIBLE, buf.readUnsignedByte());
 
-        position.setSpeed(buf.readUnsignedShort() * 0.194384);
-        position.setCourse(buf.readUnsignedShort());
+        position.setSpeed(buf.readUnsignedShortLE() * 0.194384);
+        position.setCourse(buf.readUnsignedShortLE());
 
-        position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
-        position.set("maximumSpeed", buf.readUnsignedShort());
-        position.set("minimumSpeed", buf.readUnsignedShort());
+        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+        position.set("maximumSpeed", buf.readUnsignedShortLE());
+        position.set("minimumSpeed", buf.readUnsignedShortLE());
 
-        position.set(Position.PREFIX_IO + 1, buf.readUnsignedShort()); // VSAUT1 voltage
-        position.set(Position.PREFIX_IO + 2, buf.readUnsignedShort()); // VSAUT2 voltage
-        position.set(Position.PREFIX_IO + 3, buf.readUnsignedShort()); // solar voltage
+        position.set(Position.PREFIX_IO + 1, buf.readUnsignedShortLE()); // VSAUT1 voltage
+        position.set(Position.PREFIX_IO + 2, buf.readUnsignedShortLE()); // VSAUT2 voltage
+        position.set(Position.PREFIX_IO + 3, buf.readUnsignedShortLE()); // solar voltage
 
-        position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001);
+        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
 
         return position;
     }
 
     private Position parsePositionReport(
-            DeviceSession deviceSession, ChannelBuffer buf, int sequenceNumber, long timestamp) {
+            DeviceSession deviceSession, ByteBuf buf, int sequenceNumber, long timestamp) {
         Position position = new Position(getProtocolName());
 
         position.set(Position.KEY_INDEX, sequenceNumber);
         position.setDeviceId(deviceSession.getDeviceId());
         position.setTime(convertTimestamp(timestamp));
 
-        position.setLatitude(buf.readMedium() * 0.00002);
-        position.setLongitude(buf.readMedium() * 0.00002);
+        position.setLatitude(buf.readMediumLE() * 0.00002);
+        position.setLongitude(buf.readMediumLE() * 0.00002);
 
         position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
         position.setCourse(buf.readUnsignedByte() * 2);
@@ -173,15 +173,15 @@ public class NavigilProtocolDecoder extends BaseProtocolDecoder {
     }
 
     private Position parsePositionReport2(
-            DeviceSession deviceSession, ChannelBuffer buf, int sequenceNumber, long timestamp) {
+            DeviceSession deviceSession, ByteBuf buf, int sequenceNumber, long timestamp) {
         Position position = new Position(getProtocolName());
 
         position.set(Position.KEY_INDEX, sequenceNumber);
         position.setDeviceId(deviceSession.getDeviceId());
         position.setTime(convertTimestamp(timestamp));
 
-        position.setLatitude(buf.readInt() * 0.0000001);
-        position.setLongitude(buf.readInt() * 0.0000001);
+        position.setLatitude(buf.readIntLE() * 0.0000001);
+        position.setLongitude(buf.readIntLE() * 0.0000001);
 
         buf.readUnsignedByte(); // report trigger
 
@@ -191,13 +191,13 @@ public class NavigilProtocolDecoder extends BaseProtocolDecoder {
         position.setValid((flags & 0x80) == 0x80 && (flags & 0x40) == 0x40);
 
         position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
-        position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
+        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
 
         return position;
     }
 
     private Position parseSnapshot4(
-            DeviceSession deviceSession, ChannelBuffer buf, int sequenceNumber) {
+            DeviceSession deviceSession, ByteBuf buf, int sequenceNumber) {
         Position position = new Position(getProtocolName());
 
         position.set(Position.KEY_INDEX, sequenceNumber);
@@ -208,34 +208,34 @@ public class NavigilProtocolDecoder extends BaseProtocolDecoder {
         buf.readUnsignedByte(); // GNSS fix quality
         buf.readUnsignedByte(); // GNSS assistance age
 
-        long flags = buf.readUnsignedInt();
+        long flags = buf.readUnsignedIntLE();
         position.setValid((flags & 0x0400) == 0x0400);
 
-        position.setTime(convertTimestamp(buf.readUnsignedInt()));
+        position.setTime(convertTimestamp(buf.readUnsignedIntLE()));
 
-        position.setLatitude(buf.readInt() * 0.0000001);
-        position.setLongitude(buf.readInt() * 0.0000001);
-        position.setAltitude(buf.readUnsignedShort());
+        position.setLatitude(buf.readIntLE() * 0.0000001);
+        position.setLongitude(buf.readIntLE() * 0.0000001);
+        position.setAltitude(buf.readUnsignedShortLE());
 
         position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
         position.set(Position.KEY_SATELLITES_VISIBLE, buf.readUnsignedByte());
 
-        position.setSpeed(buf.readUnsignedShort() * 0.194384);
-        position.setCourse(buf.readUnsignedShort() * 0.1);
+        position.setSpeed(buf.readUnsignedShortLE() * 0.194384);
+        position.setCourse(buf.readUnsignedShortLE() * 0.1);
 
         position.set("maximumSpeed", buf.readUnsignedByte());
         position.set("minimumSpeed", buf.readUnsignedByte());
-        position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
+        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
 
         position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte()); // supply voltage 1
         position.set(Position.PREFIX_IO + 2, buf.readUnsignedByte()); // supply voltage 2
-        position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001);
+        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
 
         return position;
     }
 
     private Position parseTrackingData(
-            DeviceSession deviceSession, ChannelBuffer buf, int sequenceNumber, long timestamp) {
+            DeviceSession deviceSession, ByteBuf buf, int sequenceNumber, long timestamp) {
         Position position = new Position(getProtocolName());
 
         position.set(Position.KEY_INDEX, sequenceNumber);
@@ -247,17 +247,17 @@ public class NavigilProtocolDecoder extends BaseProtocolDecoder {
         short flags = buf.readUnsignedByte();
         position.setValid((flags & 0x01) == 0x01);
 
-        buf.readUnsignedShort(); // duration
+        buf.readUnsignedShortLE(); // duration
 
-        position.setLatitude(buf.readInt() * 0.0000001);
-        position.setLongitude(buf.readInt() * 0.0000001);
+        position.setLatitude(buf.readIntLE() * 0.0000001);
+        position.setLongitude(buf.readIntLE() * 0.0000001);
 
         position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
         position.setCourse(buf.readUnsignedByte() * 2.0);
 
         position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
-        position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001);
-        position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
+        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
+        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
 
         return position;
     }
@@ -266,22 +266,22 @@ public class NavigilProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         buf.readUnsignedByte(); // protocol version
         buf.readUnsignedByte(); // version id
-        int sequenceNumber = buf.readUnsignedShort();
-        int messageId = buf.readUnsignedShort();
-        buf.readUnsignedShort(); // length
-        int flags = buf.readUnsignedShort();
-        buf.readUnsignedShort(); // checksum
+        int sequenceNumber = buf.readUnsignedShortLE();
+        int messageId = buf.readUnsignedShortLE();
+        buf.readUnsignedShortLE(); // length
+        int flags = buf.readUnsignedShortLE();
+        buf.readUnsignedShortLE(); // checksum
 
-        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(buf.readUnsignedInt()));
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(buf.readUnsignedIntLE()));
         if (deviceSession == null) {
             return null;
         }
 
-        long timestamp = buf.readUnsignedInt();
+        long timestamp = buf.readUnsignedIntLE();
 
         if ((flags & 0x1) == 0x0) {
             sendAcknowledgment(channel, sequenceNumber);
diff --git a/src/org/traccar/protocol/NavisProtocol.java b/src/org/traccar/protocol/NavisProtocol.java
index 771c9d61d..fd306ee9f 100644
--- a/src/org/traccar/protocol/NavisProtocol.java
+++ b/src/org/traccar/protocol/NavisProtocol.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.
@@ -15,10 +15,9 @@
  */
 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 io.netty.handler.codec.LengthFieldBasedFrameDecoder;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 
 import java.nio.ByteOrder;
@@ -32,15 +31,14 @@ public class NavisProtocol 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) {
-                pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(4 * 1024, 12, 2, 2, 0));
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast("frameDecoder",
+                        new LengthFieldBasedFrameDecoder(ByteOrder.LITTLE_ENDIAN, 4 * 1024, 12, 2, 2, 0, false));
                 pipeline.addLast("objectDecoder", new NavisProtocolDecoder(NavisProtocol.this));
             }
-        };
-        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
-        serverList.add(server);
+        });
     }
 
 }
diff --git a/src/org/traccar/protocol/NavisProtocolDecoder.java b/src/org/traccar/protocol/NavisProtocolDecoder.java
index 6881fb8ed..37001c35b 100644
--- a/src/org/traccar/protocol/NavisProtocolDecoder.java
+++ b/src/org/traccar/protocol/NavisProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 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.
@@ -15,18 +15,18 @@
  */
 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.BitUtil;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
 
 import java.net.SocketAddress;
-import java.nio.ByteOrder;
 import java.nio.charset.StandardCharsets;
 import java.util.LinkedList;
 import java.util.List;
@@ -75,23 +75,23 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
-    private ParseResult parsePosition(DeviceSession deviceSession, ChannelBuffer buf) {
+    private ParseResult parsePosition(DeviceSession deviceSession, ByteBuf buf) {
         Position position = new Position(getProtocolName());
 
         position.setDeviceId(deviceSession.getDeviceId());
 
         int format;
         if (buf.getUnsignedByte(buf.readerIndex()) == 0) {
-            format = buf.readUnsignedShort();
+            format = buf.readUnsignedShortLE();
         } else {
             format = buf.readUnsignedByte();
         }
         position.set("format", format);
 
-        long index = buf.readUnsignedInt();
+        long index = buf.readUnsignedIntLE();
         position.set(Position.KEY_INDEX, index);
 
-        position.set(Position.KEY_EVENT, buf.readUnsignedShort());
+        position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());
 
         buf.skipBytes(6); // event time
 
@@ -104,33 +104,33 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
         position.set(Position.KEY_RSSI, buf.readUnsignedByte());
 
         if (isFormat(format, F10, F20, F30)) {
-            position.set(Position.KEY_OUTPUT, buf.readUnsignedShort());
+            position.set(Position.KEY_OUTPUT, buf.readUnsignedShortLE());
         } else if (isFormat(format, F40, F50, F51, F52)) {
             position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());
         }
 
         if (isFormat(format, F10, F20, F30, F40)) {
-            position.set(Position.KEY_INPUT, buf.readUnsignedShort());
+            position.set(Position.KEY_INPUT, buf.readUnsignedShortLE());
         } else if (isFormat(format, F50, F51, F52)) {
             position.set(Position.KEY_INPUT, buf.readUnsignedByte());
         }
 
-        position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001);
-        position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
+        position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001);
+        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE());
 
         if (isFormat(format, F10, F20, F30)) {
-            position.set(Position.PREFIX_TEMP + 1, buf.readShort());
+            position.set(Position.PREFIX_TEMP + 1, buf.readShortLE());
         }
 
         if (isFormat(format, F10, F20, F50, F52)) {
-            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
-            position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
+            position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE());
+            position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShortLE());
         }
 
         // Impulse counters
         if (isFormat(format, F20, F50, F51, F52)) {
-            buf.readUnsignedInt();
-            buf.readUnsignedInt();
+            buf.readUnsignedIntLE();
+            buf.readUnsignedIntLE();
         }
 
         if (isFormat(format, F20, F50, F51, F52)) {
@@ -142,30 +142,30 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
                     .setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte() + 1, buf.readUnsignedByte());
             position.setTime(dateBuilder.getDate());
 
-            position.setLatitude(buf.readFloat() / Math.PI * 180);
-            position.setLongitude(buf.readFloat() / Math.PI * 180);
-            position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloat()));
-            position.setCourse(buf.readUnsignedShort());
+            position.setLatitude(buf.readFloatLE() / Math.PI * 180);
+            position.setLongitude(buf.readFloatLE() / Math.PI * 180);
+            position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE()));
+            position.setCourse(buf.readUnsignedShortLE());
 
-            position.set(Position.KEY_ODOMETER, buf.readFloat() * 1000);
-            position.set(Position.KEY_DISTANCE, buf.readFloat());
+            position.set(Position.KEY_ODOMETER, buf.readFloatLE() * 1000);
+            position.set(Position.KEY_DISTANCE, buf.readFloatLE());
 
             // Segment times
-            buf.readUnsignedShort();
-            buf.readUnsignedShort();
+            buf.readUnsignedShortLE();
+            buf.readUnsignedShortLE();
         }
 
         // Other
         if (isFormat(format, F51, F52)) {
-            buf.readUnsignedShort();
+            buf.readUnsignedShortLE();
             buf.readByte();
-            buf.readUnsignedShort();
-            buf.readUnsignedShort();
+            buf.readUnsignedShortLE();
+            buf.readUnsignedShortLE();
             buf.readByte();
-            buf.readUnsignedShort();
-            buf.readUnsignedShort();
+            buf.readUnsignedShortLE();
+            buf.readUnsignedShortLE();
             buf.readByte();
-            buf.readUnsignedShort();
+            buf.readUnsignedShortLE();
         }
 
         // Four temperature sensors
@@ -179,12 +179,12 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
         return new ParseResult(index, position);
     }
 
-    private Object processSingle(DeviceSession deviceSession, Channel channel, ChannelBuffer buf) {
+    private Object processSingle(DeviceSession deviceSession, Channel channel, ByteBuf buf) {
         ParseResult result = parsePosition(deviceSession, buf);
 
-        ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 8);
-        response.writeBytes(ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "*<T", StandardCharsets.US_ASCII));
-        response.writeInt((int) result.getId());
+        ByteBuf response = Unpooled.buffer(8);
+        response.writeBytes(Unpooled.copiedBuffer("*<T", StandardCharsets.US_ASCII));
+        response.writeIntLE((int) result.getId());
         sendReply(channel, response);
 
         if (result.getPosition().getFixTime() == null) {
@@ -194,7 +194,7 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
         return result.getPosition();
     }
 
-    private Object processArray(DeviceSession deviceSession, Channel channel, ChannelBuffer buf) {
+    private Object processArray(DeviceSession deviceSession, Channel channel, ByteBuf buf) {
         List<Position> positions = new LinkedList<>();
         int count = buf.readUnsignedByte();
 
@@ -205,8 +205,8 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
             }
         }
 
-        ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 8);
-        response.writeBytes(ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "*<A", StandardCharsets.US_ASCII));
+        ByteBuf response = Unpooled.buffer(8);
+        response.writeBytes(Unpooled.copiedBuffer("*<A", StandardCharsets.US_ASCII));
         response.writeByte(count);
         sendReply(channel, response);
 
@@ -217,15 +217,15 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
         return positions;
     }
 
-    private Object processHandshake(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
+    private Object processHandshake(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
         buf.readByte(); // semicolon symbol
         if (getDeviceSession(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII)) != null) {
-            sendReply(channel, ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "*<S", StandardCharsets.US_ASCII));
+            sendReply(channel, Unpooled.copiedBuffer("*<S", StandardCharsets.US_ASCII));
         }
         return null;
     }
 
-    private static short checksum(ChannelBuffer buf) {
+    private static short checksum(ByteBuf buf) {
         short sum = 0;
         for (int i = 0; i < buf.readableBytes(); i++) {
             sum ^= buf.getUnsignedByte(i);
@@ -233,17 +233,17 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
         return sum;
     }
 
-    private void sendReply(Channel channel, ChannelBuffer data) {
-        ChannelBuffer header = ChannelBuffers.directBuffer(ByteOrder.LITTLE_ENDIAN, 16);
-        header.writeBytes(ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, prefix, StandardCharsets.US_ASCII));
-        header.writeInt((int) deviceUniqueId);
-        header.writeInt((int) serverId);
-        header.writeShort(data.readableBytes());
+    private void sendReply(Channel channel, ByteBuf data) {
+        ByteBuf header = Unpooled.buffer(16);
+        header.writeBytes(Unpooled.copiedBuffer(prefix, StandardCharsets.US_ASCII));
+        header.writeIntLE((int) deviceUniqueId);
+        header.writeIntLE((int) serverId);
+        header.writeShortLE(data.readableBytes());
         header.writeByte(checksum(data));
         header.writeByte(checksum(header));
 
         if (channel != null) {
-            channel.write(ChannelBuffers.copiedBuffer(header, data));
+            channel.writeAndFlush(new NetworkMessage(Unpooled.copiedBuffer(header, data), channel.remoteAddress()));
         }
     }
 
@@ -251,13 +251,13 @@ public class NavisProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
         prefix = buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII);
         buf.skipBytes(prefix.length()); // prefix @NTC by default
-        serverId = buf.readUnsignedInt();
-        deviceUniqueId = buf.readUnsignedInt();
-        int length = buf.readUnsignedShort();
+        serverId = buf.readUnsignedIntLE();
+        deviceUniqueId = buf.readUnsignedIntLE();
+        int length = buf.readUnsignedShortLE();
         buf.skipBytes(2); // header and data XOR checksum
 
         if (length == 0) {
diff --git a/src/org/traccar/protocol/NoranProtocol.java b/src/org/traccar/protocol/NoranProtocol.java
index 7d3dc4852..9cae57b32 100644
--- a/src/org/traccar/protocol/NoranProtocol.java
+++ b/src/org/traccar/protocol/NoranProtocol.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.channel.ChannelPipeline;
 import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
 import org.traccar.TrackerServer;
 import org.traccar.model.Command;
 
-import java.nio.ByteOrder;
 import java.util.List;
 
 public class NoranProtocol extends BaseProtocol {
@@ -38,15 +36,13 @@ public class NoranProtocol extends BaseProtocol {
 
     @Override
     public void initTrackerServers(List<TrackerServer> serverList) {
-        TrackerServer server = new TrackerServer(new ConnectionlessBootstrap(), getName()) {
+        serverList.add(new TrackerServer(true, getName()) {
             @Override
-            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
                 pipeline.addLast("objectEncoder", new NoranProtocolEncoder());
                 pipeline.addLast("objectDecoder", new NoranProtocolDecoder(NoranProtocol.this));
             }
-        };
-        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
-        serverList.add(server);
+        });
     }
 
 }
diff --git a/src/org/traccar/protocol/NoranProtocolDecoder.java b/src/org/traccar/protocol/NoranProtocolDecoder.java
index e10332ece..5e41cd6bc 100644
--- a/src/org/traccar/protocol/NoranProtocolDecoder.java
+++ b/src/org/traccar/protocol/NoranProtocolDecoder.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.
@@ -15,18 +15,18 @@
  */
 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.BitUtil;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Position;
 
 import java.net.SocketAddress;
-import java.nio.ByteOrder;
 import java.nio.charset.StandardCharsets;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
@@ -51,24 +51,22 @@ public class NoranProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
-        buf.readUnsignedShort(); // length
-        int type = buf.readUnsignedShort();
+        buf.readUnsignedShortLE(); // length
+        int type = buf.readUnsignedShortLE();
 
         if (type == MSG_SHAKE_HAND && channel != null) {
 
-            ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 13);
-            response.writeBytes(
-                    ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n*KW", StandardCharsets.US_ASCII));
+            ByteBuf response = Unpooled.buffer(13);
+            response.writeBytes(Unpooled.copiedBuffer("\r\n*KW", StandardCharsets.US_ASCII));
             response.writeByte(0);
-            response.writeShort(response.capacity());
-            response.writeShort(MSG_SHAKE_HAND_RESPONSE);
+            response.writeShortLE(response.capacity());
+            response.writeShortLE(MSG_SHAKE_HAND_RESPONSE);
             response.writeByte(1); // status
-            response.writeBytes(
-                    ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n", StandardCharsets.US_ASCII));
+            response.writeBytes(Unpooled.copiedBuffer("\r\n", StandardCharsets.US_ASCII));
 
-            channel.write(response, remoteAddress);
+            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
 
         } else if (type == MSG_UPLOAD_POSITION || type == MSG_UPLOAD_POSITION_NEW
                 || type == MSG_CONTROL_RESPONSE || type == MSG_ALARM) {
@@ -83,8 +81,8 @@ public class NoranProtocolDecoder extends BaseProtocolDecoder {
             Position position = new Position(getProtocolName());
 
             if (type == MSG_CONTROL_RESPONSE) {
-                buf.readUnsignedInt(); // GIS ip
-                buf.readUnsignedInt(); // GIS port
+                buf.readUnsignedIntLE(); // GIS ip
+                buf.readUnsignedIntLE(); // GIS port
             }
 
             position.setValid(BitUtil.check(buf.readUnsignedByte(), 0));
@@ -108,17 +106,17 @@ public class NoranProtocolDecoder extends BaseProtocolDecoder {
             }
 
             if (newFormat) {
-                position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedInt()));
-                position.setCourse(buf.readFloat());
+                position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedIntLE()));
+                position.setCourse(buf.readFloatLE());
             } else {
                 position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
-                position.setCourse(buf.readUnsignedShort());
+                position.setCourse(buf.readUnsignedShortLE());
             }
-            position.setLongitude(buf.readFloat());
-            position.setLatitude(buf.readFloat());
+            position.setLongitude(buf.readFloatLE());
+            position.setLatitude(buf.readFloatLE());
 
             if (!newFormat) {
-                long timeValue = buf.readUnsignedInt();
+                long timeValue = buf.readUnsignedIntLE();
                 DateBuilder dateBuilder = new DateBuilder()
                         .setYear((int) BitUtil.from(timeValue, 26))
                         .setMonth((int) BitUtil.between(timeValue, 22, 26))
@@ -129,7 +127,7 @@ public class NoranProtocolDecoder extends BaseProtocolDecoder {
                 position.setTime(dateBuilder.getDate());
             }
 
-            ChannelBuffer rawId;
+            ByteBuf rawId;
             if (newFormat) {
                 rawId = buf.readBytes(12);
             } else {
@@ -152,8 +150,8 @@ public class NoranProtocolDecoder extends BaseProtocolDecoder {
                 position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());
                 position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
             } else if (type == MSG_UPLOAD_POSITION_NEW) {
-                position.set(Position.PREFIX_TEMP + 1, buf.readShort());
-                position.set(Position.KEY_ODOMETER, buf.readFloat());
+                position.set(Position.PREFIX_TEMP + 1, buf.readShortLE());
+                position.set(Position.KEY_ODOMETER, buf.readFloatLE());
             }
 
             return position;
diff --git a/src/org/traccar/protocol/NoranProtocolEncoder.java b/src/org/traccar/protocol/NoranProtocolEncoder.java
index 25b510a73..cb25cc94b 100644
--- a/src/org/traccar/protocol/NoranProtocolEncoder.java
+++ b/src/org/traccar/protocol/NoranProtocolEncoder.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 +15,29 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.buffer.ChannelBuffers;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
 import org.traccar.BaseProtocolEncoder;
 import org.traccar.helper.Log;
 import org.traccar.model.Command;
 
-import java.nio.ByteOrder;
 import java.nio.charset.StandardCharsets;
 
 public class NoranProtocolEncoder extends BaseProtocolEncoder {
 
-    private ChannelBuffer encodeContent(String content) {
+    private ByteBuf encodeContent(String content) {
 
-        ChannelBuffer buf = ChannelBuffers.buffer(ByteOrder.LITTLE_ENDIAN, 12 + 56);
+        ByteBuf buf = Unpooled.buffer(12 + 56);
 
-        buf.writeBytes(
-                ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n*KW", StandardCharsets.US_ASCII));
+        buf.writeBytes(Unpooled.copiedBuffer("\r\n*KW", StandardCharsets.US_ASCII));
         buf.writeByte(0);
-        buf.writeShort(buf.capacity());
-        buf.writeShort(NoranProtocolDecoder.MSG_CONTROL);
+        buf.writeShortLE(buf.capacity());
+        buf.writeShortLE(NoranProtocolDecoder.MSG_CONTROL);
         buf.writeInt(0); // gis ip
-        buf.writeShort(0); // gis port
+        buf.writeShortLE(0); // gis port
         buf.writeBytes(content.getBytes(StandardCharsets.US_ASCII));
         buf.writerIndex(buf.writerIndex() + 50 - content.length());
-        buf.writeBytes(
-                ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n", StandardCharsets.US_ASCII));
+        buf.writeBytes(Unpooled.copiedBuffer("\r\n", StandardCharsets.US_ASCII));
 
         return buf;
     }
diff --git a/src/org/traccar/protocol/NvsFrameDecoder.java b/src/org/traccar/protocol/NvsFrameDecoder.java
index 598bb1e4c..4fa1cab1c 100644
--- a/src/org/traccar/protocol/NvsFrameDecoder.java
+++ b/src/org/traccar/protocol/NvsFrameDecoder.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.
@@ -15,18 +15,16 @@
  */
 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 io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
 
-public class NvsFrameDecoder extends FrameDecoder {
+public class NvsFrameDecoder 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 + 2) {
             return null;
diff --git a/src/org/traccar/protocol/NvsProtocol.java b/src/org/traccar/protocol/NvsProtocol.java
index fdcb2bbcf..aaf447120 100644
--- a/src/org/traccar/protocol/NvsProtocol.java
+++ b/src/org/traccar/protocol/NvsProtocol.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.
@@ -15,9 +15,8 @@
  */
 package org.traccar.protocol;
 
-import org.jboss.netty.bootstrap.ServerBootstrap;
-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 NvsProtocol 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 NvsFrameDecoder());
                 pipeline.addLast("objectDecoder", new NvsProtocolDecoder(NvsProtocol.this));
             }
diff --git a/src/org/traccar/protocol/NvsProtocolDecoder.java b/src/org/traccar/protocol/NvsProtocolDecoder.java
index db8347d3c..46909ff0c 100644
--- a/src/org/traccar/protocol/NvsProtocolDecoder.java
+++ b/src/org/traccar/protocol/NvsProtocolDecoder.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.
@@ -15,11 +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;
 
@@ -35,9 +36,10 @@ public class NvsProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private void sendResponse(Channel channel, String response) {
+    private void sendResponse(Channel channel, SocketAddress remoteAddress, String response) {
         if (channel != null) {
-            channel.write(ChannelBuffers.copiedBuffer(response, StandardCharsets.US_ASCII));
+            channel.writeAndFlush(new NetworkMessage(
+                    Unpooled.copiedBuffer(response, StandardCharsets.US_ASCII), remoteAddress));
         }
     }
 
@@ -45,7 +47,7 @@ public class NvsProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+        ByteBuf buf = (ByteBuf) msg;
 
 
         if (buf.getUnsignedByte(buf.readerIndex()) == 0) {
@@ -55,9 +57,9 @@ public class NvsProtocolDecoder extends BaseProtocolDecoder {
             String imei = buf.toString(buf.readerIndex(), 15, StandardCharsets.US_ASCII);
 
             if (getDeviceSession(channel, remoteAddress, imei) != null) {
-                sendResponse(channel, "OK");
+                sendResponse(channel, remoteAddress, "OK");
             } else {
-                sendResponse(channel, "NO01");
+                sendResponse(channel, remoteAddress, "NO01");
             }
 
         } else {