From b9875d4076a6c88b4da6d6b296f9496f525091fe Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Thu, 20 Aug 2020 08:21:30 -0700 Subject: Fix commands response crash --- src/main/java/org/traccar/protocol/MictrackProtocolDecoder.java | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'src/main') diff --git a/src/main/java/org/traccar/protocol/MictrackProtocolDecoder.java b/src/main/java/org/traccar/protocol/MictrackProtocolDecoder.java index 0f815ca7b..ec4f97919 100644 --- a/src/main/java/org/traccar/protocol/MictrackProtocolDecoder.java +++ b/src/main/java/org/traccar/protocol/MictrackProtocolDecoder.java @@ -209,8 +209,12 @@ public class MictrackProtocolDecoder extends BaseProtocolDecoder { } private Object decodeLowAltitude( - Channel channel, SocketAddress remoteAddress, String sentence) throws Exception { - String deviceId = sentence.substring(0, sentence.indexOf("$")); + Channel channel, SocketAddress remoteAddress, String sentence) { + int separator = sentence.indexOf("$"); + if (separator < 0) { + return null; + } + String deviceId = sentence.substring(0, separator); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, deviceId); if (deviceSession == null) { -- cgit v1.2.3