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author | Stefan Clark <stefanclark@gmail.com> | 2022-08-06 17:42:22 +0100 |
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committer | Stefan Clark <stefanclark@gmail.com> | 2022-08-06 17:42:22 +0100 |
commit | dbc5fc5dcf697dcc00d357bbca5fe4669325148b (patch) | |
tree | 86396e0e6f4f2baa2af9e43f17b749eae7f651ec /src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java | |
parent | 42e88c2bf95962f1274a8bbb6e8fc09af95f627f (diff) | |
download | trackermap-server-dbc5fc5dcf697dcc00d357bbca5fe4669325148b.tar.gz trackermap-server-dbc5fc5dcf697dcc00d357bbca5fe4669325148b.tar.bz2 trackermap-server-dbc5fc5dcf697dcc00d357bbca5fe4669325148b.zip |
Updated Xexun2 Protocol
Diffstat (limited to 'src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java')
-rw-r--r-- | src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java b/src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java new file mode 100644 index 000000000..52d43c36c --- /dev/null +++ b/src/main/java/org/traccar/protocol/Xexun2FrameEncoder.java @@ -0,0 +1,48 @@ +/* + * Copyright 2022 Stefan Clark (stefan@stefanclark.co.uk) + * + * 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.ChannelHandlerContext; +import io.netty.handler.codec.MessageToByteEncoder; + +public class Xexun2FrameEncoder extends MessageToByteEncoder<ByteBuf> { + + @Override + protected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) { + out.writeBytes(msg.readBytes(2)); + + while (msg.readableBytes() > 2) { + int b = msg.readUnsignedByte(); + if (b == 0xfa && msg.isReadable() && msg.getUnsignedByte(msg.readerIndex()) == 0xaf) { + msg.readUnsignedByte(); + out.writeByte(0xfb); + out.writeByte(0xbf); + out.writeByte(0x01); + } else if (b == 0xfb && msg.isReadable() && msg.getUnsignedByte(msg.readerIndex()) == 0xbf) { + msg.readUnsignedByte(); + out.writeByte(0xfb); + out.writeByte(0xbf); + out.writeByte(0x02); + } else { + out.writeByte(b); + } + } + + out.writeBytes(msg.readBytes(2)); + + } +} |