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16 package io.netty.example.file;
17
18 import io.netty.bootstrap.ServerBootstrap;
19 import io.netty.channel.ChannelFuture;
20 import io.netty.channel.ChannelInitializer;
21 import io.netty.channel.ChannelOption;
22 import io.netty.channel.ChannelPipeline;
23 import io.netty.channel.EventLoopGroup;
24 import io.netty.channel.MultiThreadIoEventLoopGroup;
25 import io.netty.channel.nio.NioIoHandler;
26 import io.netty.channel.socket.SocketChannel;
27 import io.netty.channel.socket.nio.NioServerSocketChannel;
28 import io.netty.example.util.ServerUtil;
29 import io.netty.handler.codec.LineBasedFrameDecoder;
30 import io.netty.handler.codec.string.StringDecoder;
31 import io.netty.handler.codec.string.StringEncoder;
32 import io.netty.handler.logging.LogLevel;
33 import io.netty.handler.logging.LoggingHandler;
34 import io.netty.handler.ssl.SslContext;
35 import io.netty.handler.stream.ChunkedWriteHandler;
36 import io.netty.util.CharsetUtil;
37
38
39
40
41 public final class FileServer {
42
43 static final boolean SSL = System.getProperty("ssl") != null;
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45 static final int PORT = Integer.parseInt(System.getProperty("port", SSL? "8992" : "8023"));
46
47 public static void main(String[] args) throws Exception {
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49 final SslContext sslCtx = ServerUtil.buildSslContext();
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52 EventLoopGroup bossGroup = new MultiThreadIoEventLoopGroup(1, NioIoHandler.newFactory());
53 EventLoopGroup workerGroup = new MultiThreadIoEventLoopGroup(1, NioIoHandler.newFactory());
54 try {
55 ServerBootstrap b = new ServerBootstrap();
56 b.group(bossGroup, workerGroup)
57 .channel(NioServerSocketChannel.class)
58 .option(ChannelOption.SO_BACKLOG, 100)
59 .handler(new LoggingHandler(LogLevel.INFO))
60 .childHandler(new ChannelInitializer<SocketChannel>() {
61 @Override
62 public void initChannel(SocketChannel ch) throws Exception {
63 ChannelPipeline p = ch.pipeline();
64 if (sslCtx != null) {
65 p.addLast(sslCtx.newHandler(ch.alloc()));
66 }
67 p.addLast(
68 new StringEncoder(CharsetUtil.UTF_8),
69 new LineBasedFrameDecoder(8192),
70 new StringDecoder(CharsetUtil.UTF_8),
71 new ChunkedWriteHandler(),
72 new FileServerHandler());
73 }
74 });
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77 ChannelFuture f = b.bind(PORT).sync();
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80 f.channel().closeFuture().sync();
81 } finally {
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83 bossGroup.shutdownGracefully();
84 workerGroup.shutdownGracefully();
85 }
86 }
87 }