From e218ed3cd4fa3c1630ba15faacc23774c40543d0 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sat, 23 Jul 2016 00:58:59 +1200
Subject: Return http error if unknown

---
 src/org/traccar/protocol/OsmAndProtocolDecoder.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/org/traccar/protocol/OsmAndProtocolDecoder.java b/src/org/traccar/protocol/OsmAndProtocolDecoder.java
index da502ca65..12192c457 100644
--- a/src/org/traccar/protocol/OsmAndProtocolDecoder.java
+++ b/src/org/traccar/protocol/OsmAndProtocolDecoder.java
@@ -64,6 +64,9 @@ public class OsmAndProtocolDecoder extends BaseProtocolDecoder {
                 case "deviceid":
                     DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, value);
                     if (deviceSession == null) {
+                        if (channel != null) {
+                            channel.write(new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.BAD_REQUEST));
+                        }
                         return null;
                     }
                     position.setDeviceId(deviceSession.getDeviceId());
-- 
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