diff options
Diffstat (limited to 'src/org/traccar/protocol/Gt06FrameDecoder.java')
-rw-r--r-- | src/org/traccar/protocol/Gt06FrameDecoder.java | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/src/org/traccar/protocol/Gt06FrameDecoder.java b/src/org/traccar/protocol/Gt06FrameDecoder.java deleted file mode 100644 index cc934be42..000000000 --- a/src/org/traccar/protocol/Gt06FrameDecoder.java +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Copyright 2014 - 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 io.netty.buffer.ByteBuf; -import io.netty.channel.Channel; -import io.netty.channel.ChannelHandlerContext; -import org.traccar.BaseFrameDecoder; - -public class Gt06FrameDecoder extends BaseFrameDecoder { - - @Override - protected Object decode( - ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { - - if (buf.readableBytes() < 5) { - return null; - } - - int length = 2 + 2; // head and tail - - if (buf.getByte(buf.readerIndex()) == 0x78) { - length += 1 + buf.getUnsignedByte(buf.readerIndex() + 2); - } else { - length += 2 + buf.getUnsignedShort(buf.readerIndex() + 2); - } - - if (buf.readableBytes() >= length && buf.getUnsignedShort(buf.readerIndex() + length - 2) == 0x0d0a) { - return buf.readRetainedSlice(length); - } - - int endIndex = buf.readerIndex() - 1; - do { - endIndex = buf.indexOf(endIndex + 1, buf.writerIndex(), (byte) 0x0d); - if (endIndex > 0 && buf.writerIndex() > endIndex + 1 && buf.getByte(endIndex + 1) == 0x0a) { - return buf.readRetainedSlice(endIndex + 2 - buf.readerIndex()); - } - } while (endIndex > 0); - - return null; - } - -} |