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apply plugin: "java" | |
apply plugin: "eclipse" | |
repositories { | |
mavenCentral() | |
} | |
dependencies { | |
compile ( | |
"org.jboss.netty:netty:latest.integration", | |
"com.google.inject:guice:latest.integration", | |
"com.google.guava:guava:latest.integration" | |
) | |
} |
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package netty; | |
import java.net.InetSocketAddress; | |
import java.net.SocketAddress; | |
import java.util.concurrent.Executors; | |
import org.jboss.netty.bootstrap.ServerBootstrap; | |
import org.jboss.netty.channel.ChannelFactory; | |
import org.jboss.netty.channel.group.ChannelGroup; | |
import org.jboss.netty.channel.group.DefaultChannelGroup; | |
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory; | |
import com.google.inject.AbstractModule; | |
import com.google.inject.Guice; | |
import com.google.inject.Injector; | |
import com.google.inject.Provides; | |
import com.google.inject.Singleton; | |
public class NettyModule extends AbstractModule { | |
@Override | |
protected void configure() { | |
} | |
@Provides | |
SocketAddress provideSocketAddress() { | |
return new InetSocketAddress(8080); | |
} | |
@Provides @Singleton | |
ChannelGroup provideChannelGroup() { | |
return new DefaultChannelGroup("http-server"); | |
} | |
@Provides | |
ChannelFactory provideChannelFactory() { | |
return new NioServerSocketChannelFactory( | |
Executors.newCachedThreadPool(), Executors.newCachedThreadPool()); | |
} | |
public static void main(String[] args) { | |
Injector injector = Guice.createInjector(new NettyModule()); | |
final NettyServer server = injector.getInstance(NettyServer.class); | |
server.startAndWait(); | |
Runtime.getRuntime().addShutdownHook(new Thread(){ | |
@Override | |
public void run() { | |
server.stopAndWait(); | |
} | |
}); | |
} | |
} |
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package netty; | |
import java.net.SocketAddress; | |
import org.jboss.netty.bootstrap.ServerBootstrap; | |
import org.jboss.netty.buffer.ChannelBuffers; | |
import org.jboss.netty.channel.Channel; | |
import org.jboss.netty.channel.ChannelFactory; | |
import org.jboss.netty.channel.ChannelFuture; | |
import org.jboss.netty.channel.ChannelFutureListener; | |
import org.jboss.netty.channel.ChannelHandlerContext; | |
import org.jboss.netty.channel.ChannelPipeline; | |
import org.jboss.netty.channel.ChannelPipelineFactory; | |
import org.jboss.netty.channel.ChannelStateEvent; | |
import org.jboss.netty.channel.Channels; | |
import org.jboss.netty.channel.ExceptionEvent; | |
import org.jboss.netty.channel.MessageEvent; | |
import org.jboss.netty.channel.SimpleChannelHandler; | |
import org.jboss.netty.channel.group.ChannelGroup; | |
import org.jboss.netty.handler.codec.http.DefaultHttpResponse; | |
import org.jboss.netty.handler.codec.http.HttpResponse; | |
import org.jboss.netty.handler.codec.http.HttpResponseStatus; | |
import org.jboss.netty.handler.codec.http.HttpServerCodec; | |
import org.jboss.netty.handler.codec.http.HttpVersion; | |
import com.google.common.base.Charsets; | |
import com.google.common.util.concurrent.AbstractIdleService; | |
import com.google.inject.Inject; | |
import com.google.inject.Provider; | |
class NettyServer extends AbstractIdleService { | |
private final ChannelGroup allChannels; | |
private final SocketAddress address; | |
private final ChannelFactory factory; | |
private final ServerBootstrap bootstrap; | |
private final Provider<Handler> handler; | |
@Inject | |
NettyServer(ChannelFactory factory, ChannelGroup allChannels, SocketAddress address, Provider<Handler> handler) { | |
this.factory = factory; | |
this.bootstrap = new ServerBootstrap(factory); | |
this.allChannels = allChannels; | |
this.address = address; | |
this.handler = handler; | |
} | |
@Override | |
protected void startUp() throws Exception { | |
bootstrap.setPipelineFactory(new ChannelPipelineFactory() { | |
public ChannelPipeline getPipeline() throws Exception { | |
return Channels.pipeline(new HttpServerCodec(), handler.get()); | |
} | |
}); | |
bootstrap.setOption("child.tcpNoDelay", true); | |
bootstrap.setOption("child.keepAlive", true); | |
Channel channel = bootstrap.bind(address); | |
allChannels.add(channel); | |
} | |
@Override | |
protected void shutDown() throws Exception { | |
allChannels.close().awaitUninterruptibly(); | |
factory.releaseExternalResources(); | |
} | |
} | |
class Handler extends SimpleChannelHandler { | |
private final ChannelGroup allChannels; | |
@Inject | |
Handler(ChannelGroup allChannels) { | |
this.allChannels = allChannels; | |
} | |
@Override | |
public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) | |
throws Exception { | |
allChannels.add(e.getChannel()); | |
} | |
@Override | |
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) | |
throws Exception { | |
e.getCause().printStackTrace(); | |
e.getChannel().close(); | |
} | |
@Override | |
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) | |
throws Exception { | |
HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK); | |
response.setContent(ChannelBuffers.copiedBuffer("Hello, world!", Charsets.UTF_8)); | |
e.getChannel().write(response).addListener(new ChannelFutureListener() { | |
public void operationComplete(ChannelFuture future) throws Exception { | |
future.getChannel().close(); | |
}}); | |
} | |
} |
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