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-rw-r--r--src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java32
1 files changed, 28 insertions, 4 deletions
diff --git a/src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java b/src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java
index 7d237e705..dc77dda68 100644
--- a/src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java
@@ -18,10 +18,13 @@ package org.traccar.protocol;
import com.google.protobuf.InvalidProtocolBufferException;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
import org.traccar.Protocol;
+import org.traccar.helper.Checksum;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import org.traccar.protobuf.OmnicommMessageOuterClass;
@@ -38,7 +41,9 @@ public class OmnicommProtocolDecoder extends BaseProtocolDecoder {
}
public static final int MSG_IDENTIFICATION = 0x80;
- public static final int MSG_CONTAINER_IM = 0x86;
+ public static final int MSG_ARCHIVE_INQUIRY = 0x85;
+ public static final int MSG_ARCHIVE_DATA = 0x86;
+ public static final int MSG_REMOVE_ARCHIVE_INQUIRY = 0x87;
private OmnicommMessageOuterClass.OmnicommMessage parseProto(
ByteBuf buf, int length) throws InvalidProtocolBufferException {
@@ -58,6 +63,19 @@ public class OmnicommProtocolDecoder extends BaseProtocolDecoder {
.getDefaultInstance().getParserForType().parseFrom(array, offset, length);
}
+ private void sendResponse(Channel channel, int type, long index) {
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ response.writeByte(0xC0);
+ response.writeByte(type);
+ response.writeShortLE(4);
+ response.writeIntLE((int) index);
+ response.writeShortLE(Checksum.crc16(Checksum.CRC16_CCITT_FALSE,
+ response.nioBuffer(1, response.writerIndex() - 1)));
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+ }
+
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
@@ -71,15 +89,16 @@ public class OmnicommProtocolDecoder extends BaseProtocolDecoder {
if (type == MSG_IDENTIFICATION) {
getDeviceSession(channel, remoteAddress, String.valueOf(buf.readUnsignedIntLE()));
+ sendResponse(channel, MSG_ARCHIVE_INQUIRY, 0);
- } else if (type == MSG_CONTAINER_IM) {
+ } else if (type == MSG_ARCHIVE_DATA) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
- buf.readUnsignedIntLE(); // record number
+ long index = buf.readUnsignedIntLE();
buf.readUnsignedIntLE(); // time
buf.readUnsignedByte(); // priority
@@ -107,7 +126,12 @@ public class OmnicommProtocolDecoder extends BaseProtocolDecoder {
positions.add(position);
}
- return positions;
+ if (positions.isEmpty()) {
+ sendResponse(channel, MSG_REMOVE_ARCHIVE_INQUIRY, index + 1);
+ return null;
+ } else {
+ return positions;
+ }
}
return null;