package netty.protobuf;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.protobuf.ProtobufDecoder;
import io.netty.handler.codec.protobuf.ProtobufEncoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
public class SubReqServer {
public void bind(int port) throws Exception{
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try{
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup,workerGroup)
.channel(NioServerSocketChannel.class)
.option(ChannelOption.SO_BACKLOG,100)
.handler(new LoggingHandler(LogLevel.INFO))
.childHandler(new ChannelInitializer<SocketChannel>() {
public void initChannel(SocketChannel ch){
ch.pipeline().addLast(new ProtobufVarint32FrameDecoder());
ch.pipeline().addLast(new ProtobufDecoder(
SubscribeReqProto.SubscribeReq.getDefaultInstance()));
ch.pipeline().addLast(new ProtobufVarint32LengthFieldPrepender());
ch.pipeline().addLast(new ProtobufEncoder());
ch.pipeline().addLast(new SubReqServerHandler());
}
});
ChannelFuture f =b.bind(port).sync();
f.channel().closeFuture().sync();
}finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
}
public static void main(String[] args) throws Exception{
int port = 8080;
if(args!=null && args.length>0){
try{
port=Integer.valueOf(args[0]);
}catch (NumberFormatException e){
}
}
new SubReqServer().bind(port);
}
}

package netty.protobuf;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
public class SubReqServerHandler extends ChannelHandlerAdapter {
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
SubscribeReqProto.SubscribeReq req = (SubscribeReqProto.SubscribeReq) msg;
if ("Young".equalsIgnoreCase(req.getUserName())) {
System.out.println("Service accept client subscribe req : [" + req.toString() + "]");
ctx.writeAndFlush(resp(req.getSubReqID()));
}
}
private SubscribeRespProto.SubscribeResp resp(int subReqID){
SubscribeRespProto.SubscribeResp.Builder builder = SubscribeRespProto.SubscribeResp.newBuilder();
builder.setSubReqID(subReqID);
builder.setRespCode(0);
builder.setDesc("Netty book order succeed, 3 days later, sent to the designated address");
return builder.build();
}
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause){
cause.printStackTrace();
ctx.close();
}
}

package netty.protobuf;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import java.util.ArrayList;
import java.util.List;
public class SubReqClientHandler extends ChannelHandlerAdapter{
public SubReqClientHandler(){
}
public void channelActive(ChannelHandlerContext ctx){
for(int i=0;i<10;i++){
ctx.write(subReq(i));
}
ctx.flush();
}
private SubscribeReqProto.SubscribeReq subReq(int i) {
SubscribeReqProto.SubscribeReq.Builder builder = SubscribeReqProto.SubscribeReq.newBuilder();
builder.setSubReqID(i);
builder.setUserName("Young");
builder.setProductName("Netty Book Protobuf");
List<String> address = new ArrayList <>();
address.add("NanJing LiuLiTai");
address.add("BeiJing LiuLiChang");
address.add("ShenZhen HongShuLin");
builder.addAllAddress(address);
return builder.build();
}
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception{
System.out.println("Receive server response : [" + msg + "]");
}
public void channelReadComplete(ChannelHandlerContext ctx) throws Exception{
ctx.flush();
}
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause){
cause.printStackTrace();
ctx.close();
}
}

package netty.protobuf;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.protobuf.ProtobufDecoder;
import io.netty.handler.codec.protobuf.ProtobufEncoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender;
public class SubReqClient {
public void connect(int port, String host) throws Exception{
EventLoopGroup group = new NioEventLoopGroup();
try{
Bootstrap b =new Bootstrap();
b.group(group).channel(NioSocketChannel.class)
.option(ChannelOption.TCP_NODELAY, true)
.handler(new ChannelInitializer<SocketChannel>() {
public void initChannel(SocketChannel ch)throws Exception{
ch.pipeline().addLast(new ProtobufVarint32FrameDecoder());
ch.pipeline().addLast(new ProtobufDecoder(SubscribeRespProto.SubscribeResp.getDefaultInstance()));
ch.pipeline().addLast(new ProtobufVarint32LengthFieldPrepender());
ch.pipeline().addLast(new ProtobufEncoder());
ch.pipeline().addLast(new SubReqClientHandler());
}
});
ChannelFuture f = b.connect(host,port).sync();
f.channel().closeFuture().sync();
}finally {
group.shutdownGracefully();
}
}
public static void main(String[] args) throws Exception{
int port = 8080;
if(args!=null && args.length>0){
try{
port=Integer.valueOf(args[0]);
}catch (NumberFormatException e){
}
}
new SubReqClient().connect(port,"127.0.0.1");
}
}

就是不知道为啥不主动推送，鸟大的请指教