4 files changed, 19 insertions, 24 deletions
diff --git a/src/org/traccar/BaseProtocolDecoder.java b/src/org/traccar/BaseProtocolDecoder.java
index cc16000f4..2d6286bf8 100644
--- a/src/org/traccar/BaseProtocolDecoder.java
+++ b/src/org/traccar/BaseProtocolDecoder.java
@@ -19,6 +19,7 @@ import org.jboss.netty.channel.Channel;
 import org.jboss.netty.channel.socket.DatagramChannel;
 import org.jboss.netty.handler.codec.http.HttpRequestDecoder;
 import org.traccar.helper.Log;
+import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Device;
 import org.traccar.model.Position;
 
@@ -66,6 +67,20 @@ public abstract class BaseProtocolDecoder extends ExtendedObjectDecoder {
         return protocol.getName();
     }
 
+    protected double convertSpeed(double value, String defaultUnits) {
+        switch (Context.getConfig().getString(getProtocolName() + ".speed", defaultUnits)) {
+            case "kmh":
+                return UnitsConverter.knotsFromKph(value);
+            case "mps":
+                return UnitsConverter.knotsFromMps(value);
+            case "mph":
+                return UnitsConverter.knotsFromMph(value);
+            case "kn":
+            default:
+                return value;
+        }
+    }
+
     private DeviceSession channelDeviceSession; // connection-based protocols
     private Map<SocketAddress, DeviceSession> addressDeviceSessions = new HashMap<>(); // connectionless protocols
 
diff --git a/src/org/traccar/protocol/OsmAndProtocolDecoder.java b/src/org/traccar/protocol/OsmAndProtocolDecoder.java
index 6f8513c41..c06582a15 100644
--- a/src/org/traccar/protocol/OsmAndProtocolDecoder.java
+++ b/src/org/traccar/protocol/OsmAndProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 - 2016 Anton Tananaev (anton@traccar.org)
+ * Copyright 2013 - 2017 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.
@@ -110,7 +110,7 @@ public class OsmAndProtocolDecoder extends BaseProtocolDecoder {
                     position.setLongitude(Double.parseDouble(location[1]));
                     break;
                 case "speed":
-                    position.setSpeed(Double.parseDouble(value));
+                    position.setSpeed(convertSpeed(Double.parseDouble(value), "kn"));
                     break;
                 case "bearing":
                 case "heading":
diff --git a/src/org/traccar/protocol/Tk103ProtocolDecoder.java b/src/org/traccar/protocol/Tk103ProtocolDecoder.java
index aa75f5675..be3def453 100644
--- a/src/org/traccar/protocol/Tk103ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Tk103ProtocolDecoder.java
@@ -23,7 +23,6 @@ import org.traccar.helper.BitUtil;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
-import org.traccar.helper.UnitsConverter;
 import org.traccar.model.CellTower;
 import org.traccar.model.Network;
 import org.traccar.model.Position;
@@ -253,17 +252,7 @@ public class Tk103ProtocolDecoder extends BaseProtocolDecoder {
         position.setLatitude(parser.nextCoordinate());
         position.setLongitude(parser.nextCoordinate());
 
-        switch (Context.getConfig().getString(getProtocolName() + ".speed", "kmh")) {
-            case "kn":
-                position.setSpeed(parser.nextDouble(0));
-                break;
-            case "mph":
-                position.setSpeed(UnitsConverter.knotsFromMph(parser.nextDouble(0)));
-                break;
-            default:
-                position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
-                break;
-        }
+        position.setSpeed(convertSpeed(parser.nextDouble(0), "kmh"));
 
         dateBuilder.setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
         position.setTime(dateBuilder.getDate());
diff --git a/src/org/traccar/protocol/XexunProtocolDecoder.java b/src/org/traccar/protocol/XexunProtocolDecoder.java
index 20804bbb4..a5a38c370 100644
--- a/src/org/traccar/protocol/XexunProtocolDecoder.java
+++ b/src/org/traccar/protocol/XexunProtocolDecoder.java
@@ -17,13 +17,11 @@ package org.traccar.protocol;
 
 import org.jboss.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
-import org.traccar.Context;
 import org.traccar.DeviceSession;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
 import org.traccar.model.Position;
-import org.traccar.helper.UnitsConverter;
 
 import java.net.SocketAddress;
 import java.util.regex.Pattern;
@@ -121,14 +119,7 @@ public class XexunProtocolDecoder extends BaseProtocolDecoder {
         position.setLatitude(parser.nextCoordinate());
         position.setLongitude(parser.nextCoordinate());
 
-        switch (Context.getConfig().getString(getProtocolName() + ".speed", "kn")) {
-            case "kmh":
-                position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
-                break;
-            default:
-                position.setSpeed(parser.nextDouble(0));
-                break;
-        }
+        position.setSpeed(convertSpeed(parser.nextDouble(0), "kn"));
 
         position.setCourse(parser.nextDouble(0));