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-rw-r--r--src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
index 33456c48d..cfed351f2 100644
--- a/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
@@ -1035,7 +1035,8 @@ public class Gl200TextProtocolDecoder extends BaseProtocolDecoder {
private Object decodeIgn(
Channel channel, SocketAddress remoteAddress, String[] v, String type) throws ParseException {
- int index = 1; // header
+ int index = 0;
+ index += 1; // header
String protocolVersion = v[index++]; // protocol version
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, v[index++]);
if (deviceSession == null) {