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/*
* Copyright 2012 - 2022 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;
import io.netty.bootstrap.AbstractBootstrap;
import io.netty.bootstrap.Bootstrap;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.group.ChannelGroup;
import io.netty.channel.group.DefaultChannelGroup;
import io.netty.channel.socket.nio.NioDatagramChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.ssl.SslHandler;
import io.netty.util.concurrent.GlobalEventExecutor;
import org.traccar.config.Config;
import org.traccar.config.Keys;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import java.net.InetSocketAddress;
public abstract class TrackerServer implements TrackerConnector {
private final boolean datagram;
private final boolean secure;
@SuppressWarnings("rawtypes")
private final AbstractBootstrap bootstrap;
private final int port;
private final String address;
private final ChannelGroup channelGroup = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
@Override
public boolean isDatagram() {
return datagram;
}
@Override
public boolean isSecure() {
return secure;
}
public TrackerServer(boolean datagram, String protocol) {
this.datagram = datagram;
Config config = Context.getConfig();
secure = config.getBoolean(Keys.PROTOCOL_SSL.withPrefix(protocol));
address = config.getString(Keys.PROTOCOL_ADDRESS.withPrefix(protocol));
port = config.getInteger(Keys.PROTOCOL_PORT.withPrefix(protocol));
BasePipelineFactory pipelineFactory = new BasePipelineFactory(this, config, protocol) {
@Override
protected void addTransportHandlers(PipelineBuilder pipeline) {
try {
if (isSecure()) {
SSLEngine engine = SSLContext.getDefault().createSSLEngine();
pipeline.addLast(new SslHandler(engine));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
protected void addProtocolHandlers(PipelineBuilder pipeline) {
TrackerServer.this.addProtocolHandlers(pipeline, config);
}
};
if (datagram) {
bootstrap = new Bootstrap()
.group(EventLoopGroupFactory.getWorkerGroup())
.channel(NioDatagramChannel.class)
.handler(pipelineFactory);
} else {
bootstrap = new ServerBootstrap()
.group(EventLoopGroupFactory.getBossGroup(), EventLoopGroupFactory.getWorkerGroup())
.channel(NioServerSocketChannel.class)
.childHandler(pipelineFactory);
}
}
protected abstract void addProtocolHandlers(PipelineBuilder pipeline, Config config);
public int getPort() {
return port;
}
public String getAddress() {
return address;
}
@Override
public ChannelGroup getChannelGroup() {
return channelGroup;
}
@Override
public void start() throws Exception {
InetSocketAddress endpoint;
if (address == null) {
endpoint = new InetSocketAddress(port);
} else {
endpoint = new InetSocketAddress(address, port);
}
Channel channel = bootstrap.bind(endpoint).syncUninterruptibly().channel();
if (channel != null) {
getChannelGroup().add(channel);
}
}
@Override
public void stop() {
channelGroup.close().awaitUninterruptibly();
}
}
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