1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* Copyright 2019 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.handler.network;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPromise;
import io.netty.channel.socket.DatagramChannel;
import io.netty.channel.socket.DatagramPacket;
import org.traccar.NetworkMessage;
import java.net.InetSocketAddress;
public class NetworkMessageHandler extends ChannelDuplexHandler {
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
if (ctx.channel() instanceof DatagramChannel) {
DatagramPacket packet = (DatagramPacket) msg;
ctx.fireChannelRead(new NetworkMessage(packet.content(), packet.sender()));
} else if (msg instanceof ByteBuf) {
ByteBuf buffer = (ByteBuf) msg;
ctx.fireChannelRead(new NetworkMessage(buffer, ctx.channel().remoteAddress()));
}
}
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
if (msg instanceof NetworkMessage) {
NetworkMessage message = (NetworkMessage) msg;
if (ctx.channel() instanceof DatagramChannel) {
InetSocketAddress recipient = (InetSocketAddress) message.getRemoteAddress();
InetSocketAddress sender = (InetSocketAddress) ctx.channel().localAddress();
ctx.write(new DatagramPacket((ByteBuf) message.getMessage(), recipient, sender), promise);
} else {
ctx.write(message.getMessage(), promise);
}
} else {
ctx.write(msg, promise);
}
}
}
|
