diff options
3 files changed, 10 insertions, 2 deletions
diff --git a/src/main/java/org/traccar/protocol/Jt600FrameDecoder.java b/src/main/java/org/traccar/protocol/Jt600FrameDecoder.java index b5d060ecc..bfefb94a7 100644 --- a/src/main/java/org/traccar/protocol/Jt600FrameDecoder.java +++ b/src/main/java/org/traccar/protocol/Jt600FrameDecoder.java @@ -35,7 +35,7 @@ public class Jt600FrameDecoder extends BaseFrameDecoder { char type = (char) buf.getByte(buf.readerIndex()); if (type == '$') { - boolean longFormat = buf.getUnsignedByte(buf.readerIndex() + 1) == 0x75; + boolean longFormat = Jt600ProtocolDecoder.isLongFormat(buf, buf.readerIndex() + 1); int length = buf.getUnsignedShort(buf.readerIndex() + (longFormat ? 8 : 7)) + 10; if (length <= buf.readableBytes()) { return buf.readRetainedSlice(length); diff --git a/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java index 82abeb42e..f456cd1ef 100644 --- a/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java +++ b/src/main/java/org/traccar/protocol/Jt600ProtocolDecoder.java @@ -86,13 +86,17 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder { } + static boolean isLongFormat(ByteBuf buf, int flagIndex) { + return buf.getUnsignedByte(flagIndex) >> 4 == 0x7; + } + private List<Position> decodeBinary(ByteBuf buf, Channel channel, SocketAddress remoteAddress) { List<Position> positions = new LinkedList<>(); buf.readByte(); // header - boolean longFormat = buf.getUnsignedByte(buf.readerIndex()) >> 4 == 0x7; + boolean longFormat = isLongFormat(buf, buf.readerIndex()); String id = String.valueOf(Long.parseLong(ByteBufUtil.hexDump(buf.readSlice(5)))); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id); diff --git a/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java b/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java index ae0948987..e695624a9 100644 --- a/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java +++ b/src/test/java/org/traccar/protocol/Jt600FrameDecoderTest.java @@ -11,6 +11,10 @@ public class Jt600FrameDecoderTest extends ProtocolTest { Jt600FrameDecoder decoder = new Jt600FrameDecoder(); verifyFrame( + binary("2478905197081711003405101917164812492365028134847d0a1c000002640c0000000020c032759600731000000f0f0f0f0f0f0f0f0f0f000702850274"), + decoder.decode(null, null, binary("2478905197081711003405101917164812492365028134847d0a1c000002640c0000000020c032759600731000000f0f0f0f0f0f0f0f0f0f000702850274"))); + + verifyFrame( binary("24315011626912001b21111718095900000000000000000e0000005c000000000000000000"), decoder.decode(null, null, binary("24315011626912001b21111718095900000000000000000e0000005c00000000000000000024315011626912001b22111708130400000000000000000e0000005a00000000000000000024315011626912001b22111708140400000000000000000e0000005a000000723e18a61b01"))); |