Support acknowledgement

2 files changed, 12 insertions, 1 deletions

diff --git a/src/main/java/org/traccar/protocol/EasyTrackProtocolDecoder.java b/src/main/java/org/traccar/protocol/EasyTrackProtocolDecoder.java
index 81a31e1d1..889e2bf09 100644
--- a/src/main/java/org/traccar/protocol/EasyTrackProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/EasyTrackProtocolDecoder.java
@@ -18,6 +18,7 @@ package org.traccar.protocol;
 import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
 import org.traccar.helper.BitUtil;
 import org.traccar.helper.DateBuilder;
@@ -93,7 +94,14 @@ public class EasyTrackProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        Parser parser = new Parser(PATTERN, (String) msg);
+        String sentence = (String) msg;
+        String type = sentence.substring(20, 22);
+
+        if (type.equals("TX") && channel != null) {
+            channel.writeAndFlush(new NetworkMessage(sentence + "#", remoteAddress));
+        }
+
+        Parser parser = new Parser(PATTERN, sentence);
         if (!parser.matches()) {
             return null;
         }
diff --git a/src/test/java/org/traccar/protocol/EasyTrackProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/EasyTrackProtocolDecoderTest.java
index 1ea608b04..c86e14db2 100644
--- a/src/test/java/org/traccar/protocol/EasyTrackProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/EasyTrackProtocolDecoderTest.java
@@ -10,6 +10,9 @@ public class EasyTrackProtocolDecoderTest extends ProtocolTest {
 
         EasyTrackProtocolDecoder decoder = new EasyTrackProtocolDecoder(null);
 
+        verifyNull(decoder, text(
+                "*ET,354522180045564,TX,V,14070E,122336"));
+
         verifyPosition(decoder, text(
                 "*ET,135790246811221,HB,A,050915,0C2A27,00CE5954,04132263,0000,F000,01000000,20,4,0000,00F123,100,4845423835,0091564212,0B45,10.00,9"));