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author | Anton Tananaev <anton@traccar.org> | 2024-05-21 06:41:44 -0700 |
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committer | Anton Tananaev <anton@traccar.org> | 2024-05-21 06:41:44 -0700 |
commit | c2c27617fa4392c3a25a6c4ad62bd24060f1c0c1 (patch) | |
tree | 537f577aa32a5e7c484b4afb0b5c02c1b35eaab3 /src/main/java/org/traccar/protocol/SnapperFrameDecoder.java | |
parent | 445a2c5d0763bb42880ff1f9db93d755f6fdfa62 (diff) | |
download | trackermap-server-c2c27617fa4392c3a25a6c4ad62bd24060f1c0c1.tar.gz trackermap-server-c2c27617fa4392c3a25a6c4ad62bd24060f1c0c1.tar.bz2 trackermap-server-c2c27617fa4392c3a25a6c4ad62bd24060f1c0c1.zip |
Handle Snapper protocol ping
Diffstat (limited to 'src/main/java/org/traccar/protocol/SnapperFrameDecoder.java')
-rw-r--r-- | src/main/java/org/traccar/protocol/SnapperFrameDecoder.java | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/SnapperFrameDecoder.java b/src/main/java/org/traccar/protocol/SnapperFrameDecoder.java new file mode 100644 index 000000000..be45346a6 --- /dev/null +++ b/src/main/java/org/traccar/protocol/SnapperFrameDecoder.java @@ -0,0 +1,44 @@ +/* + * Copyright 2024 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 SnapperFrameDecoder extends BaseFrameDecoder { + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { + + byte header = buf.getByte(buf.readerIndex()); + if (header == 'P') { + if (buf.readableBytes() >= 2) { + return buf.readRetainedSlice(2); + } + } else if (buf.readableBytes() >= 16) { + int length = buf.getIntLE(buf.readerIndex() + 12) + 12 + 4 + 9; + if (buf.readableBytes() >= length) { + return buf.readRetainedSlice(length); + } + } + + return null; + } + +} |