netty - 尝试为 Netty 客户端编写连接（通道）池；最好的方法是什么？

Question

我需要开发一个返回通道的 Netty 连接池，这样我就可以避免每次需要时都创建通道。客户端应该每秒通过 Http 发出多个请求，并从一组 10 个线程中执行。目前我已经创建了一个 Netty Channel Pool，它围绕这个机制工作，但它似乎没有连接。

（虽然它产生了频道，但频道无法在网络上成功“写入”。

//Code follows
  //get Channel method
  public Channel getChannel() throws Exception 
  {
            synchronized (_channels) {
              PoolChannel pc = null;
              for (int i = 0; i < _channels.size(); i++) {
                pc = _channels.get(i);
                if (pc.lease()) {
                  // PoolConnection is available
                  if (!_checkChannels) {
                    return pc;
                  }
                  else {
                    // Check the status of the connection
                    boolean isHealthy = true;
                    try {
                      if (!pc.isOpen()) {
                    // If something wrong with the channel
                    // then don't use it anymore.
                        isHealthy = false;
                      }
                    }
                    catch(Exception ex) {
                      // If we can't even ask for that information, we
                      // certainly don't want to use it anymore.
                      isHealthy = false;
                    }

                    if (isHealthy) {
                      return pc;
                    }
                    else {
                      try {
                        pc.expire();
                      }
                      catch(Exception e) {
                        // ignore
                      }
                      _channels.remove(i);
                    }
                  }
                }
              }
            }

            // Create a new Connection
            PoolChannel pc=null;

            URI uri = _uri;
            String host = _host;
            int port = _port;

            //create channel
            Executor bossPool = Executors.newCachedThreadPool();
            Executor workerPool = Executors.newCachedThreadPool();

            ClientBootstrap bstrap = new ClientBootstrap(
                        new NioClientSocketChannelFactory(
                                bossPool, workerPool));
             bstrap.setPipelineFactory(new HttpClientPipelineFactory());

             ChannelFuture future = bstrap.connect(new InetSocketAddress(host, port));
             Channel chann = future.awaitUninterruptibly().getChannel();
             if (future.isSuccess()) {
                System.out.println("Channel success");
             }
            System.out.println("Channel = "+chann);
            pc = new PoolChannel(chann);
            pc.lease();

            // Add it to the pool
            synchronized (_channels) {
              _channels.add(pc);

              if (_cleaner == null) {
                // Put a new PoolCleaner
                _cleaner = new PoolCleaner(_cleaningInterval);
                _cleaner.start();
              }
            }

            return pc;
          }  

//===========================

请问我可以得到帮助吗？另外，当我完成频道后，如何将此频道返回到池中？仅仅关闭频道就足够了吗？提前致谢。