From 36a253b19764613e03b538a2b1a48eaa6408f4d5 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Mon, 4 Jun 2018 16:36:49 +1200 Subject: Implement Wialon Retranslator protocol --- .../traccar/protocol/RetranslatorFrameDecoder.java | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 src/org/traccar/protocol/RetranslatorFrameDecoder.java (limited to 'src/org/traccar/protocol/RetranslatorFrameDecoder.java') diff --git a/src/org/traccar/protocol/RetranslatorFrameDecoder.java b/src/org/traccar/protocol/RetranslatorFrameDecoder.java new file mode 100644 index 000000000..1836fb26e --- /dev/null +++ b/src/org/traccar/protocol/RetranslatorFrameDecoder.java @@ -0,0 +1,38 @@ +/* + * Copyright 2018 Anton Tananaev (anton@traccar.org) + * + * 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; +import org.jboss.netty.buffer.ChannelBuffers; +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.jboss.netty.handler.codec.frame.FrameDecoder; + +public class RetranslatorFrameDecoder extends FrameDecoder { + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception { + + int length = 4 + ChannelBuffers.swapInt(buf.getInt(buf.readerIndex())); + if (buf.readableBytes() >= length) { + return buf.readBytes(length); + } else { + return null; + } + } + +} -- cgit v1.2.3