From 2d920ecec746615281802e068044a3122a0ae90b Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 4 May 2016 12:00:39 +1200
Subject: Support for GT06 command response

---
 src/org/traccar/protocol/Gt06ProtocolDecoder.java  | 23 +++++++++++++++++++++-
 .../traccar/protocol/Gt06ProtocolDecoderTest.java  |  6 ++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/org/traccar/protocol/Gt06ProtocolDecoder.java b/src/org/traccar/protocol/Gt06ProtocolDecoder.java
index e83ced668..d55ff1f83 100644
--- a/src/org/traccar/protocol/Gt06ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Gt06ProtocolDecoder.java
@@ -16,6 +16,7 @@
 package org.traccar.protocol;
 
 import java.net.SocketAddress;
+import java.nio.charset.Charset;
 import java.util.TimeZone;
 
 import org.jboss.netty.buffer.ChannelBuffer;
@@ -203,7 +204,27 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
 
         } else if (hasDeviceId()) {
 
-            if (isSupported(type)) {
+            if (type == MSG_STRING) {
+
+                Position position = new Position();
+                position.setDeviceId(getDeviceId());
+                position.setProtocol(getProtocolName());
+
+                getLastLocation(position, null);
+
+                int commandLength = buf.readUnsignedByte();
+
+                buf.readUnsignedByte(); // server flag (reserved)
+
+                position.set("command", buf.readBytes(commandLength - 1).toString(Charset.defaultCharset()));
+
+                buf.readUnsignedShort(); // language
+
+                sendResponse(channel, type, buf.readUnsignedShort());
+
+                return position;
+
+            } else if (isSupported(type)) {
 
                 Position position = new Position();
                 position.setDeviceId(getDeviceId());
diff --git a/test/org/traccar/protocol/Gt06ProtocolDecoderTest.java b/test/org/traccar/protocol/Gt06ProtocolDecoderTest.java
index d925ffec3..3bcd2ec3a 100644
--- a/test/org/traccar/protocol/Gt06ProtocolDecoderTest.java
+++ b/test/org/traccar/protocol/Gt06ProtocolDecoderTest.java
@@ -16,6 +16,12 @@ public class Gt06ProtocolDecoderTest extends ProtocolTest {
         verifyNothing(decoder, binary(
                 "78780D01086471700328358100093F040D0A"));
 
+        verifyAttributes(decoder, binary(
+                "78782d152500000000437574206f666620746865206675656c20737570706c793a2053756363657373210002013b898a0d0a"));
+
+        verifyAttributes(decoder, binary(
+                "787829152100000000526573746f7265206675656c20737570706c793a2053756363657373210002014077ce0d0a"));
+
         verifyNothing(decoder, binary(
                 "78780D01012345678901234500018CDD0D0A"));
 
-- 
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