diff options
Diffstat (limited to 'src/org/traccar/protocol/Arnavi4FrameDecoder.java')
| -rw-r--r-- | src/org/traccar/protocol/Arnavi4FrameDecoder.java | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/src/org/traccar/protocol/Arnavi4FrameDecoder.java b/src/org/traccar/protocol/Arnavi4FrameDecoder.java index 97bf75a20..2587420c9 100644 --- a/src/org/traccar/protocol/Arnavi4FrameDecoder.java +++ b/src/org/traccar/protocol/Arnavi4FrameDecoder.java @@ -1,3 +1,18 @@ +/* + * Copyright 2017 Ivan Muratov (binakot@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ package org.traccar.protocol; import org.jboss.netty.buffer.ChannelBuffer; @@ -5,11 +20,10 @@ import org.jboss.netty.channel.Channel; import org.jboss.netty.channel.ChannelHandlerContext; import org.jboss.netty.handler.codec.frame.FrameDecoder; -/** - * Created by Ivan Muratov @binakot on 12.07.2017. - */ public class Arnavi4FrameDecoder extends FrameDecoder { + static final int PACKET_MIN_LENGTH = 4; + static final byte HEADER_START_SIGN = (byte) 0xFF; static final byte HEADER_VERSION_1 = 0x22; static final byte HEADER_VERSION_2 = 0x23; @@ -26,7 +40,7 @@ public class Arnavi4FrameDecoder extends FrameDecoder { Channel channel, ChannelBuffer buf) throws Exception { - if (buf.readableBytes() == 0) { + if (buf.readableBytes() < PACKET_MIN_LENGTH) { return null; } |