From 8852f1176ac32a065db734079c295783811c192f Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Tue, 16 Apr 2019 23:06:45 -0700
Subject: Support binary serial data

---
 .../org/traccar/protocol/TeltonikaProtocolDecoder.java   | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java')

diff --git a/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java b/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java
index 974d2c106..485df833a 100644
--- a/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/TeltonikaProtocolDecoder.java
@@ -145,8 +145,22 @@ public class TeltonikaProtocolDecoder extends BaseProtocolDecoder {
         } else {
 
             position.set(Position.KEY_TYPE, type);
-            position.set(Position.KEY_RESULT, buf.readSlice(buf.readInt()).toString(StandardCharsets.US_ASCII));
 
+            int length = buf.readInt();
+            boolean readable = true;
+            for (int i = 0; i < length; i++) {
+                byte b = buf.getByte(buf.readerIndex() + i);
+                if (b < 32 && b != '\r' && b != '\n') {
+                    readable = false;
+                    break;
+                }
+            }
+
+            if (readable) {
+                position.set(Position.KEY_RESULT, buf.readSlice(length).toString(StandardCharsets.US_ASCII));
+            } else {
+                position.set(Position.KEY_RESULT, ByteBufUtil.hexDump(buf.readSlice(length)));
+            }
         }
     }
 
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