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-rw-r--r--src/org/traccar/protocol/AtrackFrameDecoder.java2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/org/traccar/protocol/AtrackFrameDecoder.java b/src/org/traccar/protocol/AtrackFrameDecoder.java
index 970ddc66b..267b6de12 100644
--- a/src/org/traccar/protocol/AtrackFrameDecoder.java
+++ b/src/org/traccar/protocol/AtrackFrameDecoder.java
@@ -35,7 +35,7 @@ public class AtrackFrameDecoder extends LengthFieldBasedFrameDecoder {
ChannelBuffer buf) throws Exception {
// Keep alive message
- if (buf.readableBytes() >= KEEPALIVE_LENGTH ||
+ if (buf.readableBytes() >= KEEPALIVE_LENGTH &&
buf.getUnsignedShort(buf.readerIndex()) == 0xfe02) {
channel.write(buf.readBytes(KEEPALIVE_LENGTH));
}